PPR MPLS Basic Test Topology
The FRR PPR implementation for IS-IS is available here: https://github.com/opensourcerouting/frr/tree/isisd-ppr-sr
In this topology we have an IS-IS network consisting of 12 routers. CE1 and CE2 are the consumer edges, connected to R11 and R14, respectively. Three hosts are connected to the CEs using only static routes.
Router R11 advertises 6 PPR TLVs:
- IPv6 prefixes 6000:1::1/128 and 6000:2::1/128: {R11 - R21 - R22 - R23 - R14} (IPv6 Node Addresses).
- MPLS SR Prefix-SIDs 500 and 501: {R11 - R21 - R22 - R23 - R14} (SR Prefix-SIDs).
- MPLS SR Prefix-SIDs 502 and 503: {R11 - R21 - R31 - R32 - R41 - R33 - R34 - R23 - R14} (SR Prefix-SIDs)
PBR rules are configured on R11 and R14 to route the traffic between Host 1 and Host 3 using the first PPR tunnel, whereas all other traffic between CE1 and CE2 uses the second PPR tunnel.
Additional information:
- Addresses in the 4000::/16 range refer to interface addresses, where the last hextet corresponds to the node ID.
- Addresses in the 5000::/16 range refer to loopback addresses, where the last hextet corresponds to the node ID.
- Addresses in the 6000::/16 range refer to PPR-ID addresses.
+-------+ +-------+ +-------+
| | | | | |
| HOST1 | | HOST2 | | HOST3 |
| | | | | |
+---+---+ +---+---+ +---+---+
| | |
|fd00:10:1::/64 | |
+-----+ +------+ fd00:20:1::/64|
| |fd00:10:2::/64 |
| | |
+-+--+--+ +---+---+
| | | |
| CE1 | | CE2 |
| | | |
+---+---+ +---+---+
| |
| |
|fd00:10:0::/64 fd00:20:0::/64|
| |
| |
+---+---+ +-------+ +-------+ +---+---+
| |4000:101::/64| |4000:102::/64| |4000:103::/64| |
| R11 +-------------+ R12 +-------------+ R13 +-------------+ R14 |
| | | | | | | |
+---+---+ +--+-+--+ +--+-+--+ +---+---+
| | | | | |
|4000:104::/64 | |4000:106::/64 | |4000:108::/64 |
+---------+ +--------+ +--------+ +--------+ +--------+ +---------+
| |4000:105::/64 | |4000:107::/64 | |4000:109::/64
| | | | | |
+--+-+--+ +--+-+--+ +--+-+--+
| |4000:110::/64| |4000:111::/64| |
| R21 +-------------+ R22 +-------------+ R23 |
| | | | | |
+--+-+--+ +--+-+--+ +--+-+--+
| | | | | |
| |4000:113::/64 | |4000:115::/64 | |4000:117::/64
+---------+ +--------+ +--------+ +--------+ +--------+ +---------+
|4000:112::/64 | |4000:114::/64 | |4000:116::/64 |
| | | | | |
+---+---+ +--+-+--+ +--+-+--+ +---+---+
| |4000:118::/64| |4000:119::/64| |4000:120::/64| |
| R31 +-------------+ R32 +-------------+ R33 +-------------+ R34 |
| | | | | | | |
+-------+ +---+---+ +---+---+ +-------+
| |
|4000:121::/64 |
+----------+----------+
|
|
+---+---+
| |
| R41 |
| |
+-------+
PPR TLV processing needs to be enabled on all IS-IS routers using the ppr on command. The advertisements of all PPR TLVs is done by router R11.
---
routers:
host1:
links:
eth-ce1:
peer: [ce1, eth-host1]
frr:
zebra:
staticd:
config: |
interface eth-ce1
ipv6 address fd00:10:1::1/64
!
ipv6 route ::/0 fd00:10:1::100
host2:
links:
eth-ce1:
peer: [ce1, eth-host2]
frr:
zebra:
staticd:
config: |
interface eth-ce1
ipv6 address fd00:10:2::1/64
!
ipv6 route ::/0 fd00:10:2::100
host3:
links:
eth-ce2:
peer: [ce2, eth-host3]
frr:
zebra:
staticd:
config: |
interface eth-ce2
ipv6 address fd00:20:1::1/64
!
ipv6 route ::/0 fd00:20:1::100
ce1:
links:
eth-host1:
peer: [host1, eth-ce1]
eth-host2:
peer: [host2, eth-ce1]
eth-rt11:
peer: [rt11, eth-ce1]
frr:
zebra:
staticd:
config: |
interface eth-host1
ipv6 address fd00:10:1::100/64
!
interface eth-host2
ipv6 address fd00:10:2::100/64
!
interface eth-rt11
ipv6 address fd00:10:0::100/64
!
ipv6 route ::/0 fd00:10:0::11 label 16501
ce2:
links:
eth-host3:
peer: [host3, eth-ce2]
eth-rt14:
peer: [rt14, eth-ce2]
frr:
zebra:
staticd:
config: |
interface eth-host3
ipv6 address fd00:20:1::100/64
!
interface eth-rt14
ipv6 address fd00:20:0::100/64
!
ipv6 route ::/0 fd00:20:0::14 label 16500
rt11:
links:
lo:
mpls: yes
lo-ppr:
eth-ce1:
peer: [ce1, eth-rt11]
mpls: yes
eth-rt12:
peer: [rt12, eth-rt11]
mpls: yes
eth-rt21:
peer: [rt21, eth-rt11]
mpls: yes
shell: |
# GRE tunnel for preferred packets (PPR)
ip -6 tunnel add tun-ppr mode ip6gre remote 6000:2::1 local 6000:1::1 ttl 64
ip link set dev tun-ppr up
# PBR rules
ip -6 rule add from fd00:10:1::/64 to fd00:20:1::/64 iif eth-ce1 lookup 10000
ip -6 route add default dev tun-ppr table 10000
frr:
zebra:
staticd:
isisd:
config: |
interface lo-ppr
ipv6 address 6000:1::1/128
!
interface lo
ip address 10.0.0.11/32
ipv6 address 5000::11/128
ipv6 router isis 1
!
interface eth-ce1
ipv6 address fd00:10:0::11/64
!
interface eth-rt12
ipv6 address 4000:101::11/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt21
ipv6 address 4000:104::11/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
ipv6 route fd00:10::/32 fd00:10:0::100
!
ppr group PPR_IPV6
ppr ipv6 6000:1::1/128 prefix 5000::11/128 metric 50
pde ipv6-node 5000::14/128
pde ipv6-node 5000::23/128
pde ipv6-node 5000::22/128
pde ipv6-node 5000::21/128
pde ipv6-node 5000::11/128
!
ppr ipv6 6000:2::1/128 prefix 5000::14/128 metric 50
pde ipv6-node 5000::11/128
pde ipv6-node 5000::21/128
pde ipv6-node 5000::22/128
pde ipv6-node 5000::23/128
pde ipv6-node 5000::14/128
!
!
ppr group PPR_MPLS_1
ppr mpls 500 prefix 5000::11/128
pde prefix-sid 14
pde prefix-sid 23
pde prefix-sid 22
pde prefix-sid 21
pde prefix-sid 11
!
ppr mpls 501 prefix 5000::14/128
pde prefix-sid 11
pde prefix-sid 21
pde prefix-sid 22
pde prefix-sid 23
pde prefix-sid 14
!
!
ppr group PPR_MPLS_2
ppr mpls 502 prefix 5000::11/128
pde prefix-sid 14
pde prefix-sid 23
pde prefix-sid 34
pde prefix-sid 33
pde prefix-sid 41
pde prefix-sid 32
pde prefix-sid 31
pde prefix-sid 21
pde prefix-sid 11
!
ppr mpls 503 prefix 5000::14/128
pde prefix-sid 11
pde prefix-sid 21
pde prefix-sid 31
pde prefix-sid 32
pde prefix-sid 41
pde prefix-sid 33
pde prefix-sid 34
pde prefix-sid 23
pde prefix-sid 14
!
!
router isis 1
net 49.0000.0000.0000.0011.00
is-type level-1
topology ipv6-unicast
segment-routing on
segment-routing prefix 5000::11/128 index 11 no-php-flag
ppr on
ppr advertise PPR_IPV6
ppr advertise PPR_MPLS_1
ppr advertise PPR_MPLS_2
!
rt12:
links:
lo:
mpls: yes
eth-rt11:
peer: [rt11, eth-rt12]
mpls: yes
eth-rt13:
peer: [rt13, eth-rt12]
mpls: yes
eth-rt21:
peer: [rt21, eth-rt12]
mpls: yes
eth-rt22:
peer: [rt22, eth-rt12]
mpls: yes
frr:
zebra:
isisd:
config: |
interface lo
ip address 10.0.0.12/32
ipv6 address 5000::12/128
ipv6 router isis 1
!
interface eth-rt11
ipv6 address 4000:101::12/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt13
ipv6 address 4000:102::12/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt21
ipv6 address 4000:105::12/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt22
ipv6 address 4000:106::12/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
router isis 1
net 49.0000.0000.0000.0012.00
is-type level-1
topology ipv6-unicast
segment-routing on
segment-routing prefix 5000::12/128 index 12 no-php-flag
ppr on
!
rt13:
links:
lo:
mpls: yes
eth-rt12:
peer: [rt12, eth-rt13]
mpls: yes
eth-rt14:
peer: [rt14, eth-rt13]
mpls: yes
eth-rt22:
peer: [rt22, eth-rt13]
mpls: yes
eth-rt23:
peer: [rt23, eth-rt13]
mpls: yes
frr:
zebra:
isisd:
config: |
interface lo
ip address 10.0.0.13/32
ipv6 address 5000::13/128
ipv6 router isis 1
!
interface eth-rt12
ipv6 address 4000:102::13/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt14
ipv6 address 4000:103::13/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt22
ipv6 address 4000:107::13/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt23
ipv6 address 4000:108::13/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
router isis 1
net 49.0000.0000.0000.0013.00
is-type level-1
topology ipv6-unicast
segment-routing on
segment-routing prefix 5000::13/128 index 13 no-php-flag
ppr on
!
rt14:
links:
lo:
mpls: yes
lo-ppr:
eth-ce2:
peer: [ce2, eth-rt14]
mpls: yes
eth-rt13:
peer: [rt13, eth-rt14]
mpls: yes
eth-rt23:
peer: [rt23, eth-rt14]
mpls: yes
shell: |
# GRE tunnel for preferred packets (PPR)
ip -6 tunnel add tun-ppr mode ip6gre remote 6000:1::1 local 6000:2::1 ttl 64
ip link set dev tun-ppr up
# PBR rules
ip -6 rule add from fd00:20:1::/64 to fd00:10:1::/64 iif eth-ce2 lookup 10000
ip -6 route add default dev tun-ppr table 10000
frr:
zebra:
staticd:
isisd:
config: |
interface lo-ppr
ipv6 address 6000:2::1/128
!
interface lo
ip address 10.0.0.14/32
ipv6 address 5000::14/128
ipv6 router isis 1
!
interface eth-ce2
ipv6 address fd00:20:0::14/64
!
interface eth-rt13
ipv6 address 4000:103::14/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt23
ipv6 address 4000:109::14/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
ipv6 route fd00:20::/32 fd00:20:0::100
!
router isis 1
net 49.0000.0000.0000.0014.00
is-type level-1
topology ipv6-unicast
segment-routing on
segment-routing prefix 5000::14/128 index 14 no-php-flag
ppr on
!
rt21:
links:
lo:
mpls: yes
eth-rt11:
peer: [rt11, eth-rt21]
mpls: yes
eth-rt12:
peer: [rt12, eth-rt21]
mpls: yes
eth-rt22:
peer: [rt22, eth-rt21]
mpls: yes
eth-rt31:
peer: [rt31, eth-rt21]
mpls: yes
eth-rt32:
peer: [rt32, eth-rt21]
mpls: yes
frr:
zebra:
isisd:
config: |
interface lo
ip address 10.0.0.21/32
ipv6 address 5000::21/128
ipv6 router isis 1
!
interface eth-rt11
ipv6 address 4000:104::21/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt12
ipv6 address 4000:105::21/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt22
ipv6 address 4000:110::21/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt31
ipv6 address 4000:112::21/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt32
ipv6 address 4000:113::21/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
router isis 1
net 49.0000.0000.0000.0021.00
is-type level-1
topology ipv6-unicast
segment-routing on
segment-routing prefix 5000::21/128 index 21 no-php-flag
ppr on
!
rt22:
links:
lo:
mpls: yes
eth-rt12:
peer: [rt12, eth-rt22]
mpls: yes
eth-rt13:
peer: [rt13, eth-rt22]
mpls: yes
eth-rt21:
peer: [rt21, eth-rt22]
mpls: yes
eth-rt23:
peer: [rt23, eth-rt22]
mpls: yes
eth-rt32:
peer: [rt32, eth-rt22]
mpls: yes
eth-rt33:
mpls: yes
peer: [rt33, eth-rt22]
frr:
zebra:
isisd:
config: |
interface lo
ip address 10.0.0.22/32
ipv6 address 5000::22/128
ipv6 router isis 1
!
interface eth-rt12
ipv6 address 4000:106::22/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt13
ipv6 address 4000:107::22/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt21
ipv6 address 4000:110::22/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt23
ipv6 address 4000:111::22/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt32
ipv6 address 4000:114::22/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt33
ipv6 address 4000:115::22/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
router isis 1
net 49.0000.0000.0000.0022.00
is-type level-1
topology ipv6-unicast
segment-routing on
segment-routing prefix 5000::22/128 index 22 no-php-flag
ppr on
!
rt23:
links:
lo:
mpls: yes
eth-rt13:
peer: [rt13, eth-rt23]
mpls: yes
eth-rt14:
peer: [rt14, eth-rt23]
mpls: yes
eth-rt22:
peer: [rt22, eth-rt23]
mpls: yes
eth-rt33:
peer: [rt33, eth-rt23]
mpls: yes
eth-rt34:
peer: [rt34, eth-rt23]
mpls: yes
frr:
zebra:
isisd:
config: |
interface lo
ip address 10.0.0.23/32
ipv6 address 5000::23/128
ipv6 router isis 1
!
interface eth-rt13
ipv6 address 4000:108::23/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt14
ipv6 address 4000:109::23/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt22
ipv6 address 4000:111::23/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt33
ipv6 address 4000:116::23/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt34
ipv6 address 4000:117::23/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
router isis 1
net 49.0000.0000.0000.0023.00
is-type level-1
topology ipv6-unicast
segment-routing on
segment-routing global-block 20000 27999
segment-routing prefix 5000::23/128 index 23 no-php-flag
ppr on
!
rt31:
links:
lo:
mpls: yes
eth-rt21:
peer: [rt21, eth-rt31]
mpls: yes
eth-rt32:
peer: [rt32, eth-rt31]
mpls: yes
frr:
zebra:
isisd:
config: |
interface lo
ip address 10.0.0.31/32
ipv6 address 5000::31/128
ipv6 router isis 1
!
interface eth-rt21
ipv6 address 4000:112::31/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt32
ipv6 address 4000:118::31/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
router isis 1
net 49.0000.0000.0000.0031.00
is-type level-1
topology ipv6-unicast
segment-routing on
segment-routing prefix 5000::31/128 index 31 no-php-flag
ppr on
!
rt32:
links:
lo:
mpls: yes
eth-rt21:
peer: [rt21, eth-rt32]
mpls: yes
eth-rt22:
peer: [rt22, eth-rt32]
mpls: yes
eth-rt31:
peer: [rt31, eth-rt32]
mpls: yes
eth-rt33:
peer: [rt33, eth-rt32]
mpls: yes
eth-sw1:
peer: [sw1, eth-rt32]
mpls: yes
frr:
zebra:
isisd:
config: |
interface lo
ip address 10.0.0.32/32
ipv6 address 5000::32/128
ipv6 router isis 1
!
interface eth-rt21
ipv6 address 4000:113::32/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt22
ipv6 address 4000:114::32/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt31
ipv6 address 4000:118::32/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt33
ipv6 address 4000:119::32/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-sw1
ipv6 address 4000:121::32/64
ipv6 router isis 1
isis hello-multiplier 3
!
router isis 1
net 49.0000.0000.0000.0032.00
is-type level-1
topology ipv6-unicast
segment-routing on
segment-routing prefix 5000::32/128 index 32 no-php-flag
ppr on
!
rt33:
links:
lo:
mpls: yes
eth-rt22:
peer: [rt22, eth-rt33]
mpls: yes
eth-rt23:
peer: [rt23, eth-rt33]
mpls: yes
eth-rt32:
peer: [rt32, eth-rt33]
mpls: yes
eth-rt34:
peer: [rt34, eth-rt33]
mpls: yes
eth-sw1:
peer: [sw1, eth-rt33]
mpls: yes
frr:
zebra:
isisd:
config: |
interface lo
ip address 10.0.0.33/32
ipv6 address 5000::33/128
ipv6 router isis 1
!
interface eth-rt22
ipv6 address 4000:115::33/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt23
ipv6 address 4000:116::33/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt32
ipv6 address 4000:119::33/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt34
ipv6 address 4000:120::33/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-sw1
ipv6 address 4000:121::33/64
ipv6 router isis 1
isis hello-multiplier 3
!
router isis 1
net 49.0000.0000.0000.0033.00
is-type level-1
topology ipv6-unicast
segment-routing on
segment-routing prefix 5000::33/128 index 33 no-php-flag
ppr on
!
rt34:
links:
lo:
mpls: yes
eth-rt23:
peer: [rt23, eth-rt34]
mpls: yes
eth-rt33:
peer: [rt33, eth-rt34]
mpls: yes
frr:
zebra:
isisd:
config: |
interface lo
ip address 10.0.0.34/32
ipv6 address 5000::34/128
ipv6 router isis 1
!
interface eth-rt23
ipv6 address 4000:117::34/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
interface eth-rt33
ipv6 address 4000:120::34/64
ipv6 router isis 1
isis network point-to-point
isis hello-multiplier 3
!
router isis 1
net 49.0000.0000.0000.0034.00
is-type level-1
topology ipv6-unicast
segment-routing on
segment-routing prefix 5000::34/128 index 34 no-php-flag
ppr on
!
rt41:
links:
lo:
mpls: yes
eth-sw1:
peer: [sw1, eth-rt41]
mpls: yes
frr:
zebra:
isisd:
config: |
interface lo
ip address 10.0.0.41/32
ipv6 address 5000::41/128
ipv6 router isis 1
!
interface eth-sw1
ipv6 address 4000:121::41/64
ipv6 router isis 1
isis hello-multiplier 3
!
router isis 1
net 49.0000.0000.0000.0041.00
is-type level-1
topology ipv6-unicast
segment-routing on
segment-routing prefix 5000::41/128 index 41 no-php-flag
ppr on
!
switches:
sw1:
links:
eth-rt32:
peer: [rt32, eth-sw1]
eth-rt33:
peer: [rt33, eth-sw1]
eth-rt41:
peer: [rt41, eth-sw1]
frr:
#valgrind: yes
base-config: |
hostname %(node)
password 1
log file %(logdir)/%(node).log
log commands
!
debug zebra rib
debug isis sr-events
debug isis ppr
debug isis events
debug isis route-events
debug isis spf-events
debug isis lsp-gen
!NOTE: it's of fundamental importance to enable MPLS processing on the loopback interfaces, otherwise the tail-end routers of the PPR-MPLS tunnels will drop the labeled packets they receive.
PPR can also be configured using NETCONF, RESTCONF and gRPC based on the following YANG models:
As an example, here's R11 configuration in the XML format:
<lib xmlns="http://frrouting.org/yang/interface">
<interface>
<name>lo-ppr</name>
<vrf>default</vrf>
</interface>
<interface>
<name>lo</name>
<vrf>default</vrf>
<isis xmlns="http://frrouting.org/yang/isisd">
<area-tag>1</area-tag>
<ipv6-routing>true</ipv6-routing>
</isis>
</interface>
<interface>
<name>eth-ce1</name>
<vrf>default</vrf>
</interface>
<interface>
<name>eth-rt12</name>
<vrf>default</vrf>
<isis xmlns="http://frrouting.org/yang/isisd">
<area-tag>1</area-tag>
<ipv6-routing>true</ipv6-routing>
<hello>
<multiplier>
<level-1>3</level-1>
<level-2>3</level-2>
</multiplier>
</hello>
<network-type>point-to-point</network-type>
</isis>
</interface>
<interface>
<name>eth-rt21</name>
<vrf>default</vrf>
<isis xmlns="http://frrouting.org/yang/isisd">
<area-tag>1</area-tag>
<ipv6-routing>true</ipv6-routing>
<hello>
<multiplier>
<level-1>3</level-1>
<level-2>3</level-2>
</multiplier>
</hello>
<network-type>point-to-point</network-type>
</isis>
</interface>
</lib>
<ppr xmlns="http://frrouting.org/yang/ppr">
<group>
<name>PPR_IPV6</name>
<ipv6>
<ppr-id>6000:1::1/128</ppr-id>
<ppr-prefix>5000::11/128</ppr-prefix>
<ppr-pde>
<pde-id>5000::14/128</pde-id>
<pde-id-type>ipv6-node</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>5000::23/128</pde-id>
<pde-id-type>ipv6-node</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>5000::22/128</pde-id>
<pde-id-type>ipv6-node</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>5000::21/128</pde-id>
<pde-id-type>ipv6-node</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>5000::11/128</pde-id>
<pde-id-type>ipv6-node</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<attributes>
<ppr-metric>50</ppr-metric>
</attributes>
</ipv6>
<ipv6>
<ppr-id>6000:2::1/128</ppr-id>
<ppr-prefix>5000::14/128</ppr-prefix>
<ppr-pde>
<pde-id>5000::11/128</pde-id>
<pde-id-type>ipv6-node</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>5000::21/128</pde-id>
<pde-id-type>ipv6-node</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>5000::22/128</pde-id>
<pde-id-type>ipv6-node</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>5000::23/128</pde-id>
<pde-id-type>ipv6-node</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>5000::14/128</pde-id>
<pde-id-type>ipv6-node</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<attributes>
<ppr-metric>50</ppr-metric>
</attributes>
</ipv6>
</group>
<group>
<name>PPR_MPLS_1</name>
<mpls>
<ppr-id>500</ppr-id>
<ppr-prefix>5000::11/128</ppr-prefix>
<ppr-pde>
<pde-id>14</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>23</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>22</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>21</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>11</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
</mpls>
<mpls>
<ppr-id>501</ppr-id>
<ppr-prefix>5000::14/128</ppr-prefix>
<ppr-pde>
<pde-id>11</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>21</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>22</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>23</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>14</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
</mpls>
</group>
<group>
<name>PPR_MPLS_2</name>
<mpls>
<ppr-id>502</ppr-id>
<ppr-prefix>5000::11/128</ppr-prefix>
<ppr-pde>
<pde-id>14</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>23</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>34</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>33</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>41</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>32</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>31</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>21</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>11</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
</mpls>
<mpls>
<ppr-id>503</ppr-id>
<ppr-prefix>5000::14/128</ppr-prefix>
<ppr-pde>
<pde-id>11</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>21</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>31</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>32</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>41</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>33</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>34</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>23</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
<ppr-pde>
<pde-id>14</pde-id>
<pde-id-type>prefix-sid</pde-id-type>
<pde-type>topological</pde-type>
</ppr-pde>
</mpls>
</group>
</ppr>
<isis xmlns="http://frrouting.org/yang/isisd">
<instance>
<area-tag>1</area-tag>
<area-address>49.0000.0000.0000.0011.00</area-address>
<multi-topology>
<ipv6-unicast>
</ipv6-unicast>
</multi-topology>
<segment-routing>
<enabled>true</enabled>
<prefix-sid-map>
<prefix-sid>
<prefix>5000::11/128</prefix>
<sid-value>11</sid-value>
<last-hop-behavior>no-php</last-hop-behavior>
</prefix-sid>
</prefix-sid-map>
</segment-routing>
<ppr>
<enable>true</enable>
<ppr-advertise>
<name>PPR_IPV6</name>
</ppr-advertise>
<ppr-advertise>
<name>PPR_MPLS_1</name>
</ppr-advertise>
<ppr-advertise>
<name>PPR_MPLS_2</name>
</ppr-advertise>
</ppr>
</instance>
</isis>Verify that R11 has flooded the PPR TLVs correctly to all IS-IS routers:
# show isis database detail 0000.0000.0011
Area 1:
IS-IS Level-1 link-state database:
LSP ID PduLen SeqNumber Chksum Holdtime ATT/P/OL
debian.00-00 * 980 0x00000003 0x3b69 894 0/0/0
Protocols Supported: IPv4, IPv6
Area Address: 49.0000
MT Router Info: ipv4-unicast
MT Router Info: ipv6-unicast
Hostname: debian
TE Router ID: 10.0.0.11
Router Capability: 10.0.0.11 , D:0, S:0
Segment Routing: I:1 V:1, SRGB Base: 16000 Range: 8000
Algorithm: 0: SPF 0: Strict SPF
MT Reachability: 0000.0000.0012.00 (Metric: 10) ipv6-unicast
Adjacency-SID: 16, Weight: 0, Flags: F:1 B:0, V:1, L:1, S:0, P:0
MT Reachability: 0000.0000.0021.00 (Metric: 10) ipv6-unicast
Adjacency-SID: 17, Weight: 0, Flags: F:1 B:0, V:1, L:1, S:0, P:0
IPv4 Interface Address: 10.0.0.11
Extended IP Reachability: 10.0.0.11/32 (Metric: 10)
MT IPv6 Reachability: 5000::11/128 (Metric: 10) ipv6-unicast
Subtlvs:
SR Prefix-SID Index: 11, Algorithm: 0, Flags: NO-PHP
MT IPv6 Reachability: 4000:101::/64 (Metric: 10) ipv6-unicast
MT IPv6 Reachability: 4000:104::/64 (Metric: 10) ipv6-unicast
PPR: Fragment ID: 0, MT-ID: ipv4-unicast, Algorithm: SPF, F:0 D:0 A:0 U:1
PPR Prefix: 5000::11/128
ID: 6000:1::1/128 (Native IPv6)
PDE: 5000::14/128 (IPv6 Node Address), L:0 N:0 E:0
PDE: 5000::23/128 (IPv6 Node Address), L:0 N:0 E:0
PDE: 5000::22/128 (IPv6 Node Address), L:0 N:0 E:0
PDE: 5000::21/128 (IPv6 Node Address), L:0 N:0 E:0
PDE: 5000::11/128 (IPv6 Node Address), L:0 N:1 E:0
Metric: 50
PPR: Fragment ID: 0, MT-ID: ipv4-unicast, Algorithm: SPF, F:0 D:0 A:0 U:1
PPR Prefix: 5000::14/128
ID: 6000:2::1/128 (Native IPv6)
PDE: 5000::11/128 (IPv6 Node Address), L:0 N:0 E:0
PDE: 5000::21/128 (IPv6 Node Address), L:0 N:0 E:0
PDE: 5000::22/128 (IPv6 Node Address), L:0 N:0 E:0
PDE: 5000::23/128 (IPv6 Node Address), L:0 N:0 E:0
PDE: 5000::14/128 (IPv6 Node Address), L:0 N:1 E:0
Metric: 50
PPR: Fragment ID: 0, MT-ID: ipv4-unicast, Algorithm: SPF, F:0 D:0 A:0 U:1
PPR Prefix: 5000::11/128
ID: 500 (MPLS)
PDE: 14 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 23 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 22 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 21 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 11 (SR-MPLS Prefix SID), L:0 N:1 E:0
PPR: Fragment ID: 0, MT-ID: ipv4-unicast, Algorithm: SPF, F:0 D:0 A:0 U:1
PPR Prefix: 5000::14/128
ID: 501 (MPLS)
PDE: 11 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 21 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 22 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 23 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 14 (SR-MPLS Prefix SID), L:0 N:1 E:0
PPR: Fragment ID: 0, MT-ID: ipv4-unicast, Algorithm: SPF, F:0 D:0 A:0 U:1
PPR Prefix: 5000::11/128
ID: 502 (MPLS)
PDE: 14 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 23 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 34 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 33 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 41 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 32 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 31 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 21 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 11 (SR-MPLS Prefix SID), L:0 N:1 E:0
PPR: Fragment ID: 0, MT-ID: ipv4-unicast, Algorithm: SPF, F:0 D:0 A:0 U:1
PPR Prefix: 5000::14/128
ID: 503 (MPLS)
PDE: 11 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 21 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 31 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 32 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 41 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 33 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 34 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 23 (SR-MPLS Prefix SID), L:0 N:0 E:0
PDE: 14 (SR-MPLS Prefix SID), L:0 N:1 E:0
Using the show isis ppr command, verify that all routers installed the PPR-IDs for the paths they are part of. Example:
# show isis ppr
Area Level ID Prefix Metric Position Status Uptime
--------------------------------------------------------------------------------------------
1 L1 500 (MPLS) 5000::11/128 0 Tail-End Up 00:00:42
1 L1 501 (MPLS) 5000::14/128 0 Head-End Up 00:00:41
1 L1 502 (MPLS) 5000::11/128 0 Tail-End Up 00:00:42
1 L1 503 (MPLS) 5000::14/128 0 Head-End Up 00:00:41
1 L1 6000:1::1/128 (Native IPv6) 5000::11/128 50 Tail-End - -
1 L1 6000:2::1/128 (Native IPv6) 5000::14/128 50 Head-End Up 00:00:41
# show mpls table
Inbound Label Type Nexthop Outbound Label
-----------------------------------------------------------------------
16 SR (IS-IS) fe80::2065:5ff:fe72:d6c5 implicit-null
17 SR (IS-IS) fe80::345f:dfff:fea4:913d implicit-null
16011 SR (IS-IS) lo -
16012 SR (IS-IS) fe80::2065:5ff:fe72:d6c5 16012
16013 SR (IS-IS) fe80::2065:5ff:fe72:d6c5 16013
16014 SR (IS-IS) fe80::2065:5ff:fe72:d6c5 16014
16021 SR (IS-IS) fe80::345f:dfff:fea4:913d 16021
16022 SR (IS-IS) fe80::345f:dfff:fea4:913d 16022
16022 SR (IS-IS) fe80::2065:5ff:fe72:d6c5 16022
16023 SR (IS-IS) fe80::345f:dfff:fea4:913d 16023
16023 SR (IS-IS) fe80::2065:5ff:fe72:d6c5 16023
16031 SR (IS-IS) fe80::345f:dfff:fea4:913d 16031
16032 SR (IS-IS) fe80::345f:dfff:fea4:913d 16032
16033 SR (IS-IS) fe80::345f:dfff:fea4:913d 16033
16033 SR (IS-IS) fe80::2065:5ff:fe72:d6c5 16033
16034 SR (IS-IS) fe80::345f:dfff:fea4:913d 16034
16034 SR (IS-IS) fe80::2065:5ff:fe72:d6c5 16034
16041 SR (IS-IS) fe80::345f:dfff:fea4:913d 16041
16500 PPR (IS-IS) lo -
16501 PPR (IS-IS) fe80::345f:dfff:fea4:913d 16501
16502 PPR (IS-IS) lo -
16503 PPR (IS-IS) fe80::345f:dfff:fea4:913d 16503
# show ipv6 route 6000::/16 longer-prefixes isis
Codes: K - kernel route, C - connected, S - static, R - RIPng,
O - OSPFv3, I - IS-IS, B - BGP, N - NHRP, T - Table,
v - VNC, V - VNC-Direct, A - Babel, D - SHARP, F - PBR,
f - OpenFabric,
> - selected route, * - FIB route, q - queued route, r - rejected route
I>* 6000:2::1/128 [115/50] via fe80::345f:dfff:fea4:913d, eth-rt21, 00:00:41
# show isis ppr
Area Level ID Prefix Metric Position Status Uptime
------------------------------------------------------------------------------------------
1 L1 500 (MPLS) 5000::11/128 0 Off-Path - -
1 L1 501 (MPLS) 5000::14/128 0 Off-Path - -
1 L1 502 (MPLS) 5000::11/128 0 Off-Path - -
1 L1 503 (MPLS) 5000::14/128 0 Off-Path - -
1 L1 6000:1::1/128 (Native IPv6) 5000::11/128 50 Off-Path - -
1 L1 6000:2::1/128 (Native IPv6) 5000::14/128 50 Off-Path - -
# show mpls table
Inbound Label Type Nexthop Outbound Label
----------------------------------------------------------------------
16 SR (IS-IS) fe80::60ad:96ff:fe3f:9989 implicit-null
17 SR (IS-IS) fe80::9cd2:25ff:febc:84c4 implicit-null
18 SR (IS-IS) fe80::941c:12ff:fe55:8a12 implicit-null
19 SR (IS-IS) fe80::78a7:59ff:fedc:48b8 implicit-null
16011 SR (IS-IS) fe80::60ad:96ff:fe3f:9989 16011
16012 SR (IS-IS) lo -
16013 SR (IS-IS) fe80::9cd2:25ff:febc:84c4 16013
16014 SR (IS-IS) fe80::9cd2:25ff:febc:84c4 16014
16021 SR (IS-IS) fe80::941c:12ff:fe55:8a12 16021
16022 SR (IS-IS) fe80::78a7:59ff:fedc:48b8 16022
16023 SR (IS-IS) fe80::78a7:59ff:fedc:48b8 16023
16023 SR (IS-IS) fe80::9cd2:25ff:febc:84c4 16023
16031 SR (IS-IS) fe80::941c:12ff:fe55:8a12 16031
16032 SR (IS-IS) fe80::78a7:59ff:fedc:48b8 16032
16032 SR (IS-IS) fe80::941c:12ff:fe55:8a12 16032
16033 SR (IS-IS) fe80::78a7:59ff:fedc:48b8 16033
16034 SR (IS-IS) fe80::78a7:59ff:fedc:48b8 16034
16034 SR (IS-IS) fe80::9cd2:25ff:febc:84c4 16034
16041 SR (IS-IS) fe80::78a7:59ff:fedc:48b8 16041
16041 SR (IS-IS) fe80::941c:12ff:fe55:8a12 16041
# show ipv6 route 6000::/16 longer-prefixes isis
# show isis ppr
Area Level ID Prefix Metric Position Status Uptime
------------------------------------------------------------------------------------------
1 L1 500 (MPLS) 5000::11/128 0 Off-Path - -
1 L1 501 (MPLS) 5000::14/128 0 Off-Path - -
1 L1 502 (MPLS) 5000::11/128 0 Off-Path - -
1 L1 503 (MPLS) 5000::14/128 0 Off-Path - -
1 L1 6000:1::1/128 (Native IPv6) 5000::11/128 50 Off-Path - -
1 L1 6000:2::1/128 (Native IPv6) 5000::14/128 50 Off-Path - -
# show mpls table
Inbound Label Type Nexthop Outbound Label
----------------------------------------------------------------------
16 SR (IS-IS) fe80::1c70:63ff:fe40:3a35 implicit-null
17 SR (IS-IS) fe80::20:56ff:feff:b218 implicit-null
18 SR (IS-IS) fe80::44c5:3fff:fe1e:f34a implicit-null
19 SR (IS-IS) fe80::387d:34ff:fe02:87c3 implicit-null
16011 SR (IS-IS) fe80::20:56ff:feff:b218 16011
16012 SR (IS-IS) fe80::20:56ff:feff:b218 16012
16013 SR (IS-IS) lo -
16014 SR (IS-IS) fe80::1c70:63ff:fe40:3a35 16014
16021 SR (IS-IS) fe80::387d:34ff:fe02:87c3 16021
16021 SR (IS-IS) fe80::20:56ff:feff:b218 16021
16022 SR (IS-IS) fe80::387d:34ff:fe02:87c3 16022
16023 SR (IS-IS) fe80::44c5:3fff:fe1e:f34a 20023
16031 SR (IS-IS) fe80::387d:34ff:fe02:87c3 16031
16031 SR (IS-IS) fe80::20:56ff:feff:b218 16031
16032 SR (IS-IS) fe80::387d:34ff:fe02:87c3 16032
16033 SR (IS-IS) fe80::44c5:3fff:fe1e:f34a 20033
16033 SR (IS-IS) fe80::387d:34ff:fe02:87c3 16033
16034 SR (IS-IS) fe80::44c5:3fff:fe1e:f34a 20034
16041 SR (IS-IS) fe80::44c5:3fff:fe1e:f34a 20041
16041 SR (IS-IS) fe80::387d:34ff:fe02:87c3 16041
# show ipv6 route 6000::/16 longer-prefixes isis
# show isis ppr
Area Level ID Prefix Metric Position Status Uptime
--------------------------------------------------------------------------------------------
1 L1 500 (MPLS) 5000::11/128 0 Head-End Up 00:00:46
1 L1 501 (MPLS) 5000::14/128 0 Tail-End Up 00:00:47
1 L1 502 (MPLS) 5000::11/128 0 Head-End Up 00:00:46
1 L1 503 (MPLS) 5000::14/128 0 Tail-End Up 00:00:47
1 L1 6000:1::1/128 (Native IPv6) 5000::11/128 50 Head-End Up 00:00:46
1 L1 6000:2::1/128 (Native IPv6) 5000::14/128 50 Tail-End - -
# show mpls table
Inbound Label Type Nexthop Outbound Label
-----------------------------------------------------------------------
16 SR (IS-IS) fe80::bcb5:99ff:fed7:22ad implicit-null
17 SR (IS-IS) fe80::4c7b:a1ff:fe66:6ca7 implicit-null
16011 SR (IS-IS) fe80::bcb5:99ff:fed7:22ad 16011
16012 SR (IS-IS) fe80::bcb5:99ff:fed7:22ad 16012
16013 SR (IS-IS) fe80::bcb5:99ff:fed7:22ad 16013
16014 SR (IS-IS) lo -
16021 SR (IS-IS) fe80::4c7b:a1ff:fe66:6ca7 20021
16021 SR (IS-IS) fe80::bcb5:99ff:fed7:22ad 16021
16022 SR (IS-IS) fe80::4c7b:a1ff:fe66:6ca7 20022
16022 SR (IS-IS) fe80::bcb5:99ff:fed7:22ad 16022
16023 SR (IS-IS) fe80::4c7b:a1ff:fe66:6ca7 20023
16031 SR (IS-IS) fe80::4c7b:a1ff:fe66:6ca7 20031
16031 SR (IS-IS) fe80::bcb5:99ff:fed7:22ad 16031
16032 SR (IS-IS) fe80::4c7b:a1ff:fe66:6ca7 20032
16032 SR (IS-IS) fe80::bcb5:99ff:fed7:22ad 16032
16033 SR (IS-IS) fe80::4c7b:a1ff:fe66:6ca7 20033
16034 SR (IS-IS) fe80::4c7b:a1ff:fe66:6ca7 20034
16041 SR (IS-IS) fe80::4c7b:a1ff:fe66:6ca7 20041
16500 PPR (IS-IS) fe80::4c7b:a1ff:fe66:6ca7 20500
16501 PPR (IS-IS) lo -
16502 PPR (IS-IS) fe80::4c7b:a1ff:fe66:6ca7 20502
16503 PPR (IS-IS) lo -
# show ipv6 route 6000::/16 longer-prefixes isis
Codes: K - kernel route, C - connected, S - static, R - RIPng,
O - OSPFv3, I - IS-IS, B - BGP, N - NHRP, T - Table,
v - VNC, V - VNC-Direct, A - Babel, D - SHARP, F - PBR,
f - OpenFabric,
> - selected route, * - FIB route, q - queued route, r - rejected route
I>* 6000:1::1/128 [115/50] via fe80::4c7b:a1ff:fe66:6ca7, eth-rt23, 00:00:02
# show isis ppr
Area Level ID Prefix Metric Position Status Uptime
---------------------------------------------------------------------------------------------
1 L1 500 (MPLS) 5000::11/128 0 Mid-Point Up 00:00:49
1 L1 501 (MPLS) 5000::14/128 0 Mid-Point Up 00:00:48
1 L1 502 (MPLS) 5000::11/128 0 Mid-Point Up 00:00:49
1 L1 503 (MPLS) 5000::14/128 0 Mid-Point Up 00:00:48
1 L1 6000:1::1/128 (Native IPv6) 5000::11/128 50 Mid-Point Up 00:00:49
1 L1 6000:2::1/128 (Native IPv6) 5000::14/128 50 Mid-Point Up 00:00:48
# show mpls table
Inbound Label Type Nexthop Outbound Label
-----------------------------------------------------------------------
16 SR (IS-IS) fe80::b886:2cff:fe84:a76f implicit-null
17 SR (IS-IS) fe80::bc7e:bbff:fe7f:ecb0 implicit-null
18 SR (IS-IS) fe80::e877:a2ff:feb7:4438 implicit-null
19 SR (IS-IS) fe80::a0c2:82ff:fe39:204c implicit-null
20 SR (IS-IS) fe80::ac6a:8aff:fe14:4f36 implicit-null
16011 SR (IS-IS) fe80::e877:a2ff:feb7:4438 16011
16012 SR (IS-IS) fe80::a0c2:82ff:fe39:204c 16012
16013 SR (IS-IS) fe80::ac6a:8aff:fe14:4f36 16013
16013 SR (IS-IS) fe80::a0c2:82ff:fe39:204c 16013
16014 SR (IS-IS) fe80::ac6a:8aff:fe14:4f36 16014
16014 SR (IS-IS) fe80::a0c2:82ff:fe39:204c 16014
16021 SR (IS-IS) lo -
16022 SR (IS-IS) fe80::ac6a:8aff:fe14:4f36 16022
16023 SR (IS-IS) fe80::ac6a:8aff:fe14:4f36 16023
16031 SR (IS-IS) fe80::bc7e:bbff:fe7f:ecb0 16031
16032 SR (IS-IS) fe80::b886:2cff:fe84:a76f 16032
16033 SR (IS-IS) fe80::b886:2cff:fe84:a76f 16033
16033 SR (IS-IS) fe80::ac6a:8aff:fe14:4f36 16033
16034 SR (IS-IS) fe80::b886:2cff:fe84:a76f 16034
16034 SR (IS-IS) fe80::ac6a:8aff:fe14:4f36 16034
16041 SR (IS-IS) fe80::b886:2cff:fe84:a76f 16041
16500 PPR (IS-IS) fe80::e877:a2ff:feb7:4438 16500
16501 PPR (IS-IS) fe80::ac6a:8aff:fe14:4f36 16501
16502 PPR (IS-IS) fe80::e877:a2ff:feb7:4438 16502
16503 PPR (IS-IS) fe80::bc7e:bbff:fe7f:ecb0 16503
# show ipv6 route 6000::/16 longer-prefixes isis
Codes: K - kernel route, C - connected, S - static, R - RIPng,
O - OSPFv3, I - IS-IS, B - BGP, N - NHRP, T - Table,
v - VNC, V - VNC-Direct, A - Babel, D - SHARP, F - PBR,
f - OpenFabric,
> - selected route, * - FIB route, q - queued route, r - rejected route
I>* 6000:1::1/128 [115/50] via fe80::e877:a2ff:feb7:4438, eth-rt11, 00:00:04
I>* 6000:2::1/128 [115/50] via fe80::ac6a:8aff:fe14:4f36, eth-rt22, 00:00:04
# show isis ppr
Area Level ID Prefix Metric Position Status Uptime
---------------------------------------------------------------------------------------------
1 L1 500 (MPLS) 5000::11/128 0 Mid-Point Up 00:00:50
1 L1 501 (MPLS) 5000::14/128 0 Mid-Point Up 00:00:50
1 L1 502 (MPLS) 5000::11/128 0 Off-Path - -
1 L1 503 (MPLS) 5000::14/128 0 Off-Path - -
1 L1 6000:1::1/128 (Native IPv6) 5000::11/128 50 Mid-Point Up 00:00:50
1 L1 6000:2::1/128 (Native IPv6) 5000::14/128 50 Mid-Point Up 00:00:50
# show mpls table
Inbound Label Type Nexthop Outbound Label
-----------------------------------------------------------------------
16 SR (IS-IS) fe80::3432:84ff:fe9d:2e41 implicit-null
17 SR (IS-IS) fe80::c436:63ff:feb3:4f5d implicit-null
18 SR (IS-IS) fe80::56:41ff:fe53:a6b2 implicit-null
19 SR (IS-IS) fe80::b423:eaff:fea1:8247 implicit-null
20 SR (IS-IS) fe80::9c2f:11ff:fe0a:ab34 implicit-null
21 SR (IS-IS) fe80::7402:b8ff:fee9:682e implicit-null
16011 SR (IS-IS) fe80::b423:eaff:fea1:8247 16011
16011 SR (IS-IS) fe80::3432:84ff:fe9d:2e41 16011
16012 SR (IS-IS) fe80::3432:84ff:fe9d:2e41 16012
16013 SR (IS-IS) fe80::c436:63ff:feb3:4f5d 16013
16014 SR (IS-IS) fe80::56:41ff:fe53:a6b2 20014
16014 SR (IS-IS) fe80::c436:63ff:feb3:4f5d 16014
16021 SR (IS-IS) fe80::b423:eaff:fea1:8247 16021
16022 SR (IS-IS) lo -
16023 SR (IS-IS) fe80::56:41ff:fe53:a6b2 20023
16031 SR (IS-IS) fe80::9c2f:11ff:fe0a:ab34 16031
16031 SR (IS-IS) fe80::b423:eaff:fea1:8247 16031
16032 SR (IS-IS) fe80::9c2f:11ff:fe0a:ab34 16032
16033 SR (IS-IS) fe80::7402:b8ff:fee9:682e 16033
16034 SR (IS-IS) fe80::7402:b8ff:fee9:682e 16034
16034 SR (IS-IS) fe80::56:41ff:fe53:a6b2 20034
16041 SR (IS-IS) fe80::7402:b8ff:fee9:682e 16041
16041 SR (IS-IS) fe80::9c2f:11ff:fe0a:ab34 16041
16500 PPR (IS-IS) fe80::b423:eaff:fea1:8247 16500
16501 PPR (IS-IS) fe80::56:41ff:fe53:a6b2 20501
# show ipv6 route 6000::/16 longer-prefixes isis
Codes: K - kernel route, C - connected, S - static, R - RIPng,
O - OSPFv3, I - IS-IS, B - BGP, N - NHRP, T - Table,
v - VNC, V - VNC-Direct, A - Babel, D - SHARP, F - PBR,
f - OpenFabric,
> - selected route, * - FIB route, q - queued route, r - rejected route
I>* 6000:1::1/128 [115/50] via fe80::b423:eaff:fea1:8247, eth-rt21, 00:00:06
I>* 6000:2::1/128 [115/50] via fe80::56:41ff:fe53:a6b2, eth-rt23, 00:00:06
# show isis ppr
Area Level ID Prefix Metric Position Status Uptime
---------------------------------------------------------------------------------------------
1 L1 500 (MPLS) 5000::11/128 0 Mid-Point Up 00:00:52
1 L1 501 (MPLS) 5000::14/128 0 Mid-Point Up 00:00:52
1 L1 502 (MPLS) 5000::11/128 0 Mid-Point Up 00:00:52
1 L1 503 (MPLS) 5000::14/128 0 Mid-Point Up 00:00:52
1 L1 6000:1::1/128 (Native IPv6) 5000::11/128 50 Mid-Point Up 00:00:52
1 L1 6000:2::1/128 (Native IPv6) 5000::14/128 50 Mid-Point Up 00:00:52
# show mpls table
Inbound Label Type Nexthop Outbound Label
-----------------------------------------------------------------------
16 SR (IS-IS) fe80::c4ca:41ff:fe2d:de8c implicit-null
17 SR (IS-IS) fe80::a02b:1eff:fed6:97e4 implicit-null
18 SR (IS-IS) fe80::5c15:8aff:feea:1d07 implicit-null
19 SR (IS-IS) fe80::a42f:50ff:fe9c:af9f implicit-null
20 SR (IS-IS) fe80::d0dc:6eff:fe71:9f19 implicit-null
20011 SR (IS-IS) fe80::5c15:8aff:feea:1d07 16011
20011 SR (IS-IS) fe80::a02b:1eff:fed6:97e4 16011
20012 SR (IS-IS) fe80::5c15:8aff:feea:1d07 16012
20012 SR (IS-IS) fe80::a02b:1eff:fed6:97e4 16012
20013 SR (IS-IS) fe80::a02b:1eff:fed6:97e4 16013
20014 SR (IS-IS) fe80::c4ca:41ff:fe2d:de8c 16014
20021 SR (IS-IS) fe80::5c15:8aff:feea:1d07 16021
20022 SR (IS-IS) fe80::5c15:8aff:feea:1d07 16022
20023 SR (IS-IS) lo -
20031 SR (IS-IS) fe80::a42f:50ff:fe9c:af9f 16031
20031 SR (IS-IS) fe80::5c15:8aff:feea:1d07 16031
20032 SR (IS-IS) fe80::a42f:50ff:fe9c:af9f 16032
20032 SR (IS-IS) fe80::5c15:8aff:feea:1d07 16032
20033 SR (IS-IS) fe80::a42f:50ff:fe9c:af9f 16033
20034 SR (IS-IS) fe80::d0dc:6eff:fe71:9f19 16034
20041 SR (IS-IS) fe80::a42f:50ff:fe9c:af9f 16041
20500 PPR (IS-IS) fe80::5c15:8aff:feea:1d07 16500
20501 PPR (IS-IS) fe80::c4ca:41ff:fe2d:de8c 16501
20502 PPR (IS-IS) fe80::d0dc:6eff:fe71:9f19 16502
20503 PPR (IS-IS) fe80::c4ca:41ff:fe2d:de8c 16503
# show ipv6 route 6000::/16 longer-prefixes isis
Codes: K - kernel route, C - connected, S - static, R - RIPng,
O - OSPFv3, I - IS-IS, B - BGP, N - NHRP, T - Table,
v - VNC, V - VNC-Direct, A - Babel, D - SHARP, F - PBR,
f - OpenFabric,
> - selected route, * - FIB route, q - queued route, r - rejected route
I>* 6000:1::1/128 [115/50] via fe80::5c15:8aff:feea:1d07, eth-rt22, 00:00:07
I>* 6000:2::1/128 [115/50] via fe80::c4ca:41ff:fe2d:de8c, eth-rt14, 00:00:07
# show isis ppr
Area Level ID Prefix Metric Position Status Uptime
---------------------------------------------------------------------------------------------
1 L1 500 (MPLS) 5000::11/128 0 Off-Path - -
1 L1 501 (MPLS) 5000::14/128 0 Off-Path - -
1 L1 502 (MPLS) 5000::11/128 0 Mid-Point Up 00:00:54
1 L1 503 (MPLS) 5000::14/128 0 Mid-Point Up 00:00:54
1 L1 6000:1::1/128 (Native IPv6) 5000::11/128 50 Off-Path - -
1 L1 6000:2::1/128 (Native IPv6) 5000::14/128 50 Off-Path - -
# show mpls table
Inbound Label Type Nexthop Outbound Label
-----------------------------------------------------------------------
16 SR (IS-IS) fe80::a067:c6ff:fe2c:3385 implicit-null
17 SR (IS-IS) fe80::f46d:c8ff:fe8a:a341 implicit-null
16011 SR (IS-IS) fe80::a067:c6ff:fe2c:3385 16011
16012 SR (IS-IS) fe80::a067:c6ff:fe2c:3385 16012
16013 SR (IS-IS) fe80::f46d:c8ff:fe8a:a341 16013
16013 SR (IS-IS) fe80::a067:c6ff:fe2c:3385 16013
16014 SR (IS-IS) fe80::f46d:c8ff:fe8a:a341 16014
16014 SR (IS-IS) fe80::a067:c6ff:fe2c:3385 16014
16021 SR (IS-IS) fe80::a067:c6ff:fe2c:3385 16021
16022 SR (IS-IS) fe80::f46d:c8ff:fe8a:a341 16022
16022 SR (IS-IS) fe80::a067:c6ff:fe2c:3385 16022
16023 SR (IS-IS) fe80::f46d:c8ff:fe8a:a341 16023
16023 SR (IS-IS) fe80::a067:c6ff:fe2c:3385 16023
16031 SR (IS-IS) lo -
16032 SR (IS-IS) fe80::f46d:c8ff:fe8a:a341 16032
16033 SR (IS-IS) fe80::f46d:c8ff:fe8a:a341 16033
16034 SR (IS-IS) fe80::f46d:c8ff:fe8a:a341 16034
16041 SR (IS-IS) fe80::f46d:c8ff:fe8a:a341 16041
16502 PPR (IS-IS) fe80::a067:c6ff:fe2c:3385 16502
16503 PPR (IS-IS) fe80::f46d:c8ff:fe8a:a341 16503
# show ipv6 route 6000::/16 longer-prefixes isis
# show isis ppr
Area Level ID Prefix Metric Position Status Uptime
---------------------------------------------------------------------------------------------
1 L1 500 (MPLS) 5000::11/128 0 Off-Path - -
1 L1 501 (MPLS) 5000::14/128 0 Off-Path - -
1 L1 502 (MPLS) 5000::11/128 0 Mid-Point Up 00:00:55
1 L1 503 (MPLS) 5000::14/128 0 Mid-Point Up 00:00:55
1 L1 6000:1::1/128 (Native IPv6) 5000::11/128 50 Off-Path - -
1 L1 6000:2::1/128 (Native IPv6) 5000::14/128 50 Off-Path - -
# show mpls table
Inbound Label Type Nexthop Outbound Label
-----------------------------------------------------------------------
16 SR (IS-IS) fe80::881f:d3ff:febd:9e8c implicit-null
17 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 implicit-null
18 SR (IS-IS) fe80::9863:abff:fed0:d7e implicit-null
19 SR (IS-IS) fe80::ec65:d1ff:fe32:b508 implicit-null
20 SR (IS-IS) fe80::a4e9:77ff:feaa:f690 implicit-null
21 SR (IS-IS) fe80::40c4:e6ff:fe26:767f implicit-null
16011 SR (IS-IS) fe80::881f:d3ff:febd:9e8c 16011
16012 SR (IS-IS) fe80::40c4:e6ff:fe26:767f 16012
16012 SR (IS-IS) fe80::881f:d3ff:febd:9e8c 16012
16013 SR (IS-IS) fe80::40c4:e6ff:fe26:767f 16013
16014 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 16014
16014 SR (IS-IS) fe80::ec65:d1ff:fe32:b508 16014
16014 SR (IS-IS) fe80::40c4:e6ff:fe26:767f 16014
16021 SR (IS-IS) fe80::881f:d3ff:febd:9e8c 16021
16022 SR (IS-IS) fe80::40c4:e6ff:fe26:767f 16022
16023 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 16023
16023 SR (IS-IS) fe80::ec65:d1ff:fe32:b508 16023
16023 SR (IS-IS) fe80::40c4:e6ff:fe26:767f 16023
16031 SR (IS-IS) fe80::9863:abff:fed0:d7e 16031
16032 SR (IS-IS) lo -
16033 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 16033
16033 SR (IS-IS) fe80::ec65:d1ff:fe32:b508 16033
16034 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 16034
16034 SR (IS-IS) fe80::ec65:d1ff:fe32:b508 16034
16041 SR (IS-IS) fe80::a4e9:77ff:feaa:f690 16041
16502 PPR (IS-IS) fe80::9863:abff:fed0:d7e 16502
16503 PPR (IS-IS) fe80::a4e9:77ff:feaa:f690 16503
# show ipv6 route 6000::/16 longer-prefixes isis
# show isis ppr
Area Level ID Prefix Metric Position Status Uptime
---------------------------------------------------------------------------------------------
1 L1 500 (MPLS) 5000::11/128 0 Off-Path - -
1 L1 501 (MPLS) 5000::14/128 0 Off-Path - -
1 L1 502 (MPLS) 5000::11/128 0 Mid-Point Up 00:00:57
1 L1 503 (MPLS) 5000::14/128 0 Mid-Point Up 00:00:57
1 L1 6000:1::1/128 (Native IPv6) 5000::11/128 50 Off-Path - -
1 L1 6000:2::1/128 (Native IPv6) 5000::14/128 50 Off-Path - -
# show mpls table
Inbound Label Type Nexthop Outbound Label
-----------------------------------------------------------------------
16 SR (IS-IS) fe80::2832:a9ff:fec3:7078 implicit-null
17 SR (IS-IS) fe80::7806:e1ff:fe72:9b1f implicit-null
18 SR (IS-IS) fe80::5476:31ff:fe94:c39 implicit-null
19 SR (IS-IS) fe80::a4e9:77ff:feaa:f690 implicit-null
20 SR (IS-IS) fe80::68c9:2ff:fe04:5eba implicit-null
21 SR (IS-IS) fe80::d053:97ff:fee2:1711 implicit-null
16011 SR (IS-IS) fe80::2832:a9ff:fec3:7078 16011
16011 SR (IS-IS) fe80::5476:31ff:fe94:c39 16011
16011 SR (IS-IS) fe80::d053:97ff:fee2:1711 16011
16012 SR (IS-IS) fe80::d053:97ff:fee2:1711 16012
16013 SR (IS-IS) fe80::68c9:2ff:fe04:5eba 20013
16013 SR (IS-IS) fe80::d053:97ff:fee2:1711 16013
16014 SR (IS-IS) fe80::68c9:2ff:fe04:5eba 20014
16021 SR (IS-IS) fe80::2832:a9ff:fec3:7078 16021
16021 SR (IS-IS) fe80::5476:31ff:fe94:c39 16021
16021 SR (IS-IS) fe80::d053:97ff:fee2:1711 16021
16022 SR (IS-IS) fe80::d053:97ff:fee2:1711 16022
16023 SR (IS-IS) fe80::68c9:2ff:fe04:5eba 20023
16031 SR (IS-IS) fe80::2832:a9ff:fec3:7078 16031
16031 SR (IS-IS) fe80::5476:31ff:fe94:c39 16031
16032 SR (IS-IS) fe80::2832:a9ff:fec3:7078 16032
16032 SR (IS-IS) fe80::5476:31ff:fe94:c39 16032
16033 SR (IS-IS) lo -
16034 SR (IS-IS) fe80::7806:e1ff:fe72:9b1f 16034
16041 SR (IS-IS) fe80::a4e9:77ff:feaa:f690 16041
16502 PPR (IS-IS) fe80::a4e9:77ff:feaa:f690 16502
16503 PPR (IS-IS) fe80::7806:e1ff:fe72:9b1f 16503
# show ipv6 route 6000::/16 longer-prefixes isis
# show isis ppr
Area Level ID Prefix Metric Position Status Uptime
---------------------------------------------------------------------------------------------
1 L1 500 (MPLS) 5000::11/128 0 Off-Path - -
1 L1 501 (MPLS) 5000::14/128 0 Off-Path - -
1 L1 502 (MPLS) 5000::11/128 0 Mid-Point Up 00:00:59
1 L1 503 (MPLS) 5000::14/128 0 Mid-Point Up 00:00:59
1 L1 6000:1::1/128 (Native IPv6) 5000::11/128 50 Off-Path - -
1 L1 6000:2::1/128 (Native IPv6) 5000::14/128 50 Off-Path - -
# show mpls table
Inbound Label Type Nexthop Outbound Label
-----------------------------------------------------------------------
16 SR (IS-IS) fe80::ac33:5dff:fe99:81ec implicit-null
17 SR (IS-IS) fe80::f009:b9ff:fe05:e540 implicit-null
16011 SR (IS-IS) fe80::ac33:5dff:fe99:81ec 16011
16011 SR (IS-IS) fe80::f009:b9ff:fe05:e540 20011
16012 SR (IS-IS) fe80::ac33:5dff:fe99:81ec 16012
16012 SR (IS-IS) fe80::f009:b9ff:fe05:e540 20012
16013 SR (IS-IS) fe80::f009:b9ff:fe05:e540 20013
16014 SR (IS-IS) fe80::f009:b9ff:fe05:e540 20014
16021 SR (IS-IS) fe80::ac33:5dff:fe99:81ec 16021
16021 SR (IS-IS) fe80::f009:b9ff:fe05:e540 20021
16022 SR (IS-IS) fe80::ac33:5dff:fe99:81ec 16022
16022 SR (IS-IS) fe80::f009:b9ff:fe05:e540 20022
16023 SR (IS-IS) fe80::f009:b9ff:fe05:e540 20023
16031 SR (IS-IS) fe80::ac33:5dff:fe99:81ec 16031
16032 SR (IS-IS) fe80::ac33:5dff:fe99:81ec 16032
16033 SR (IS-IS) fe80::ac33:5dff:fe99:81ec 16033
16034 SR (IS-IS) lo -
16041 SR (IS-IS) fe80::ac33:5dff:fe99:81ec 16041
16502 PPR (IS-IS) fe80::ac33:5dff:fe99:81ec 16502
16503 PPR (IS-IS) fe80::f009:b9ff:fe05:e540 20503
# show ipv6 route 6000::/16 longer-prefixes isis
# show isis ppr
Area Level ID Prefix Metric Position Status Uptime
---------------------------------------------------------------------------------------------
1 L1 500 (MPLS) 5000::11/128 0 Off-Path - -
1 L1 501 (MPLS) 5000::14/128 0 Off-Path - -
1 L1 502 (MPLS) 5000::11/128 0 Mid-Point Up 00:01:01
1 L1 503 (MPLS) 5000::14/128 0 Mid-Point Up 00:01:01
1 L1 6000:1::1/128 (Native IPv6) 5000::11/128 50 Off-Path - -
1 L1 6000:2::1/128 (Native IPv6) 5000::14/128 50 Off-Path - -
# show mpls table
Inbound Label Type Nexthop Outbound Label
-----------------------------------------------------------------------
16 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 implicit-null
17 SR (IS-IS) fe80::2832:a9ff:fec3:7078 implicit-null
16011 SR (IS-IS) fe80::2832:a9ff:fec3:7078 16011
16012 SR (IS-IS) fe80::2832:a9ff:fec3:7078 16012
16012 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 16012
16013 SR (IS-IS) fe80::2832:a9ff:fec3:7078 16013
16013 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 16013
16014 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 16014
16021 SR (IS-IS) fe80::2832:a9ff:fec3:7078 16021
16022 SR (IS-IS) fe80::2832:a9ff:fec3:7078 16022
16022 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 16022
16023 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 16023
16031 SR (IS-IS) fe80::2832:a9ff:fec3:7078 16031
16032 SR (IS-IS) fe80::2832:a9ff:fec3:7078 16032
16033 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 16033
16034 SR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 16034
16041 SR (IS-IS) lo -
16502 PPR (IS-IS) fe80::2832:a9ff:fec3:7078 16502
16503 PPR (IS-IS) fe80::1c7e:c3ff:fe5e:7a54 16503
# show ipv6 route 6000::/16 longer-prefixes isis
Notice how R23 uses a different SRGB compared to the other routers in the network. As such, this router install different labels for PPR-IDs 500 and 501 (e.g. 20500 instead of 16500 using the default SRGB).
Ping Host 3 from Host2 and use tcpdump or wireshark to verify that the ICMP packets are being tunneled using MPLS LSPs and following the {R11 - R21 - R22 - R23 - R14} path. Here's a wireshark capture between R11 and R21:
Using traceroute it's also possible to see that the ICMP packets are being tunneled through the IS-IS network:
root@host2:~# traceroute -n fd00:20:1::1 -s fd00:10:2::1
traceroute to fd00:20:1::1 (fd00:20:1::1), 30 hops max, 80 byte packets
1 fd00:10:2::100 1.996 ms 1.832 ms 1.725 ms
2 * * *
3 * * *
4 * * *
5 * * *
6 * * *
7 * * *
8 fd00:20::100 0.154 ms 0.191 ms 0.116 ms
9 fd00:20:1::1 0.125 ms 0.105 ms 0.104 ms