Topology
Figure 18-21: ISIS-SR micro-loop avoidance
PE1
PE1#configure terminal | Enter configure mode. |
PE1(config)#hardware-profile micro-bfd enable | Enable hardware profile micro bfd |
PE1(config)#bfd interval 3 minrx 3 multiplier 3 | Enable bfd interval min with 3 multiplier 3 |
PE1(config)#qos enable | Enable qos |
PE1(config)#vlan database | Configure vlan database |
PE1(config)#vlan 20 bridge 1 state enable | Configure vlan id |
PE1(config)#interface lo | Enter loopback interface mode |
PE1(config-if)#ip address 26.26.26.26/32 secondary | Configure the secondary IP address of the- loopback interface. |
PE1(config-if)#prefix-sid index 100 no-php | Configure sid value with no-php |
PE1(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
PE1(config-if)#exit | Exit from interface mode. |
PE1(config)#interface po1 | Configure interface as po1 |
PE1(config-if)#exit | Exit from interface mode. |
PE1(config)#interface po1.10 | Configure interface as po1 subinterface |
PE1(config-if)#encapsulation dot1q 10 | Enable encapsulate dot1q |
PE1(config-if)#ip address 10.1.1.26/24 | Configure the IP address of the interface. |
PE1(config-if)#label-switching | Enable label switching. |
PE1(config-if)#isis network point-to-point | Enable network as point to point. |
PE1(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
PE1(config-if)#exit | Exit from interface mode |
PE1(config)#interface vlan1.20 | Enter vlan interface mode. |
PE1(config-if)#ip address 20.1.1.26/24 | Configure the IP address of the interface. |
PE1(config-if)#label-switching | Enable label switching. |
PE1(config-if)#isis network point-to-point | Enable network as point to point |
PE1(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
PE1(config-if)#exit | Exit interface mode. |
PE1(config)#interface xe2 | Enter interface mode. |
PE1(config-if)#switchport | Enter the switchport mode. |
PE1(config-if)#bridge-group 1 | Enable bridge group |
PE1(config-if)#switchport mode trunk | Enter switchport mode trunk |
PE1(config-if)#switchport trunk allowed vlan add 20 | Enter switchport trunk allow vlan and add vlan id |
PE1(config-if)#exit | Exit interface mode. |
PE1(config)#interface xe7 | Enter interface mode. |
PE1(config-if)#channel-group 1 mode active | Enable channel group 1 mode active |
PE1(config-if)#exit | Exit interface mode. |
PE1(config)#commit | Commit the candidate configuration to the running configuration |
PE1(config)#router isis 1 | Set the routing process ID. |
PE1(config-router)#is-type level-1-2 | Enable iks-type as level1-2 |
PE1(config-router)#spf-interval-exp 10000 10000 | Enable spf interval value |
PE1(config-router)#metric-style wide | Configure Network entity title (NET). |
PE1(config-router)#microloop-avoidance level-1 | Enable microloop avoidance as level-1 |
PE1(config-router)#microloop-avoidance level-2 | Enable microloop avoidance as level-2 |
PE1(config-router)#mpls traffic-eng router-id 26.26.26.26 | Enable mpls traffic eng router-id |
PE1(config-router)#mpls traffic-eng level-1 | Enable MPLS Traffic Engineering as level-1. |
PE1(config-router)#mpls traffic-eng level-2 | Enable MPLS Traffic Engineering as level-2. |
PE1(config-router)#dynamic-hostname | Enable dynamic-hostname under ISIS process. |
PE1(config-router)#fast-reroute ti-lfa level-1 proto ipv4 | Enable ti-lfa with level-1 |
PE1(config-router)#fast-reroute ti-lfa level-2 proto ipv4 | Enable ti-lfa with level-2 |
PE1(config-router)#bfd all-interfaces | Enable bfd all interfaces |
PE1(config-router)#net 49.0000.0000.0026.00 | Configure Network entity title (NET). |
PE1(config-router)#passive-interface lo | Enable passive interface with loopback |
PE1(config-router)#segment-routing mpls | Enable segment routing mpls ISIS processP1 |
PE1(config-router)#exit | Exit router mode. |
PE1(config)#commit | Commit the candidate configuration to the running configuration |
P1
P1#configure terminal | Enter configure mode. |
P1(config)#hardware-profile micro-bfd enable | Enable hardware profile micro bfd |
P1(config)#bfd interval 3 minrx 3 multiplier 3 | Enable bfd interval min with 3 multiplier 3 |
P1(config)#qos enable | Enable qos |
P1(config)#interface lo | Enter loopback interface mode |
P1(config-if)#ip address 3.3.3.3/32 secondary | Configure the secondary IP address of the- loopback interface. |
P1(config-if)#ip router isis 1 | Configure sid value with no-php |
P1(config-if)#prefix-sid index 200 no-php | Make the interface part of the router isis instance. |
P1(config-if)#exit | Exit from interface mode. |
P1(config)#interface po1 | Configure interface as po1 |
P1(config-if)#exit | Exit from interface mode. |
P1(config)#interface po1.10 | Configure interface as po1 subinterface |
P1(config-if)#encapsulation dot1q 10 | Enable encapsulate dot1q |
P1(config-if)#ip address 10.1.1.3/24 | Configure the IP address of the interface. |
P1(config-if)#label-switching | Enable label switching. |
P1(config-if)#isis network point-to-point | Enable network as point to point. |
P1(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
P1(config-if)#exit | Exit from interface mode |
P1(config)#interface po2 | Configure interface as po2 |
P1(config-if)#exit | Exit from interface mode. |
P1(config)#interface po2.11 | Configure interface as po2 subinterface |
P1(config-if)#encapsulation dot1q 11 | Enable encapsulate dot1q |
P1(config-if)#ip address 11.1.1.3/24 | Configure the IP address of the interface. |
P1(config-if)#label-switching | Enable label switching. |
P1(config-if)#isis network point-to-point | Enable network as point to point. |
P1(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
P1(config-if)#exit | Exit from interface mode |
P1(config)#interface ce43 | Enter interface modce |
P1(config-if)#channel-group 2 mode active | Enable channel group 2 mode active |
P1(config-if)#exit | Exit from interface mode |
P1(config)#interface xe7 | Enter interface mode |
P1(config-if)#channel-group 1 mode active | Enable channel group 1 mode active |
P1(config-if)#exit | Exit from interface mode |
P1(config)#router isis 1 | Set the routing process ID. |
P1(config-router)#is-type level-1-2 | Enable iks-type as level1-2 |
P1(config-router)#spf-interval-exp 10000 10000 | Enable spf interval value |
P1(config-router)#metric-style wide | Configure Network entity title (NET). |
P1(config-router)#microloop-avoidance level-1 | Enable microloop avoidance as level-1 |
P1(config-router)#microloop-avoidance level-2 | Enable microloop avoidance as level-2 |
P1(config-router)#mpls traffic-eng router-id 3.3.3.3 | Enable mpls traffic eng router-id |
P1(config-router)#mpls traffic-eng level-1 | Enable MPLS Traffic Engineering as level-1. |
P1(config-router)#mpls traffic-eng level-2 | Enable MPLS Traffic Engineering as level-2. |
P1(config-router)#capability cspf | Enable capability cspf |
P1(config-router)#dynamic-hostname | Enable dynamic-hostname under ISIS process. |
P1(config-router)#set-overload-bit on-startup 120 | Configure set overload bit on startup |
P1(config-router)#fast-reroute ti-lfa level-1 proto ipv4 | Enable ti-lfa with level-1 |
P1(config-router)#fast-reroute ti-lfa level-2 proto ipv4 | Enable ti-lfa with level-2 |
P1(config-router)#bfd all-interfaces | Enable bfd all interfaces |
P1(config-router)#net 49.0000.0000.0003.00 | Configure Network entity title (NET). |
P1(config-router)#passive-interface lo | Enable passive interface with loopback |
P1(config-router)#segment-routing mpls | Enable segment routing mpls ISIS process. |
P1(config-router)#exit | Exit router mode. |
P1(config)#commit | Commit the candidate configuration to the running configuration |
P2
P2#configure terminal | Enter configure mode. |
P2(config)#hardware-profile micro-bfd enable | Enable hardware profile micro bfd |
P2(config)#bfd interval 3 minrx 3 multiplier 3 | Enable bfd interval min with 3 multiplier 3 |
P2(config)#qos enable | Enable qos |
P2(config)#vlan database | Configure vlan database |
P2(config-vlan)#vlan 20 bridge 1 state enable | Configure vlan id |
P2(config-vlan)#exit | Exit from vlan mode |
P2(config)#interface lo | Enter loopback interface mode |
P2(config-if)#ip address 2.2.2.2/32 secondary | Configure the secondary IP address of the- loopback interface. |
P2(config-if)#prefix-sid index 400 no-php | Configure sid value with no-php |
P2(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
P2(config-if)#exit | Exit from interface mode. |
P2(config)#interface xe1 | Enter the interface mode. |
P2(config-if)#ip address 81.1.1.1/24 | Configure the IP address of the interface. |
P2(config-if)#label-switching | Enable label switching. |
P2(config-if)#isis network point-to-point | Enable isis network as point to point. |
P2(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
P2(config-if)#exit | Exit from interface mode. |
P2(config)#interface xe2 | Enter interface mode. |
P2(config-if)#switchport | Enable switchport |
P2(config-if)#bridge-group 1 | Enable bridge group 1 |
P2(config-if)#switchport mode trunk | Enable switchport mode trunk |
P2(config-if)#switchport trunk allowed vlan add 20 | Enable switchport trunk allow vlan with vlan id. |
P2(config-if)#exit | Exit from interface mode. |
P2(config)#router isis 1 | Set the routing process ID. |
P2(config-router)#is-type level-1-2 | Enable is-type as level1-2 |
P2(config-router)#spf-interval-exp 10000 10000 | Enable spf interval value |
P2(config-router)#metric-style wide | Configure metric style wide |
P2(config-router)#microloop-avoidance level-1 | Enable microloop avoidance as level-1 |
P2(config-router)#microloop-avoidance level-2 | Enable microloop avoidance as level-2 |
P2(config-router)#mpls traffic-eng router-id 2.2.2.2 | Enable mpls traffic eng router-id |
P2(config-router)#mpls traffic-eng level-1 | Enable MPLS Traffic Engineering as level-1. |
P2(config-router)#mpls traffic-eng level-2 | Enable MPLS Traffic Engineering as level-2. |
P2(config-router)#dynamic-hostname | Enable dynamic-hostname under ISIS process. |
P2(config-router)#fast-reroute ti-lfa level-1 proto ipv4 | Enable ti-lfa with level-1 |
P2(config-router)#fast-reroute ti-lfa level-2 proto ipv4 | Enable ti-lfa with level-2 |
P2(config-router)#bfd all-interfaces | Enable bfd all interfaces |
P2(config-router)#net 49.0000.0000.0002.00 | Configure Network entity title (NET). |
P2(config-router)#passive-interface lo | Enable passive interface with loopback |
P2(config-router)#segment-routing mpls | Enable segment routing mpls ISIS process. |
P2(config-router)#exit | Exit router mode. |
P2(config)#commit | Commit the candidate configuration to the running configuration |
P3
P3#configure terminal | Enter configure mode. |
P3(config)#bfd interval 3 minrx 3 multiplier 3 | Enable bfd interval min with 3 multiplier 3 |
P3(config)#qos enable | Enable qos |
P3(config)#interface lo | Enter loopback interface mode |
P3(config-if)#ip address 6.6.6.6/32 secondary | Configure the secondary IP address of the- loopback interface. |
P3(config-if)#prefix-sid index 6 no-php | Configure sid value with no-php |
P3(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
P3(config-if)#exit | Exit from interface mode. |
P3(config-if)#interface ce14 | Enter interface mode. |
P3(config-if)#ip address 82.1.1.2/24 | Configure the IP address of the interface. |
P3(config-if)#label-switching | Enable label switching. |
P3(config-if)#isis network point-to-point | Configure isis network as point to point. |
P3(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
P3(config-if)#exit | Exit from interface mode |
P3(config)#interface xe1 | Enter interface mode. |
P3(config-if)#ip address 81.1.1.2/24 | Configure the IP address of the interface. |
P3(config-if)#label-switching | Enable label switching. |
P3(config-if)#isis network point-to-point | Configure isis network as point to point. |
P3(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
P3(config-if)#exit | Exit from interface mode. |
P3(config)#router isis 1 | Set the routing process ID. |
P3(config-router)#is-type level-1-2 | Enable iks-type as level1-2 |
P3(config-router)#spf-interval-exp 10000 10000 | Enable spf interval value |
P3(config-router)#metric-style wide | Configure Network entity title (NET). |
P3(config-router)#microloop-avoidance level-1 | Enable microloop avoidance as level-1 |
P3(config-router)#microloop-avoidance level-2 | Enable microloop avoidance as level-2 |
P3(config-router)#mpls traffic-eng router-id 6.6.6.6 | Enable mpls traffic eng router-id |
P3(config-router)#mpls traffic-eng level-1 | Enable MPLS Traffic Engineering as level-1. |
P3(config-router)#mpls traffic-eng level-2 | Enable MPLS Traffic Engineering as level-2. |
P3(config-router)#dynamic-hostname | Enable dynamic-hostname under ISIS process. |
P3(config-router)#fast-reroute ti-lfa level-1 proto ipv4 | Enable ti-lfa with level-1 |
P3(config-router)#fast-reroute ti-lfa level-2 proto ipv4 | Enable ti-lfa with level-2 |
P3(config-router)#bfd all-interfaces | Enable bfd all interfaces |
P3(config-router)#net 49.0000.0000.0006.00 | Configure Network entity title (NET). |
P3(config-router)#passive-interface lo | Enable passive interface with loopback |
P3(config-router)#segment-routing mpls | Enable segment routing mpls ISIS process. |
P3(config-router)#exit | Exit router mode. |
P3(config)#commit | Commit the candidate configuration to the running configuration |
PE2
PE2#configure terminal | Enter configure mode. |
PE2(config)#bfd interval 3 minrx 3 | Enable bfd interval min with 3 multiplier 3 |
PE2(config)#qos enable | Enable qos |
PE2(config)#interface lo | Enter loopback interface mode |
PE2(config-if)#ip address 23.23.23.23/32 secondary | Configure the secondary IP address of the- loopback interface. |
PE2(config-if)#prefix-sid index 300 no-php | Configure sid value with no-php |
PE2(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
PE2(config-if)#exit | Exit from interface mode. |
PE2(config)#interface po2 | Configure interface as po2 |
PE2(config-if)#exit | Exit from interface mode. |
PE2(config)#interface po2.11 | Configure interface as po2 subinterface |
PE2(config-if)#encapsulation dot1q 11 | Enable encapsulate dot1q |
PE2(config-if)#ip address 11.1.1.23/24 | Configure the IP address of the interface. |
PE2(config-if)#label-switching | Enable label switching. |
PE2(config-if)#isis network point-to-point | Enable network as point to point. |
PE2(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
PE2(config-if)#exit | Exit from interface mode |
PE2(config)#interface ce14 | Enter interface mode. |
PE2(config-if)#ip address 82.1.1.1/24 | Configure the IP address of the interface. |
PE2(config-if)#label-switching | Enable label switching. |
PE2(config-if)#isis network point-to-point | Enable network as point to point. |
PE2(config-if)#ip router isis 1 | Make the interface part of the router isis instance. |
PE2(config-if)#exit | Exit from interface mode. |
PE2(config)#interface ce43 | Enter interface mode. |
PE2(config-if)#channel-group 2 mode active | Enable channel group 2 mode active |
PE2(config-if)#exit | Exit from interface mode. |
PE2(config)#router isis 1 | Set the routing process ID. |
PE2(config-router)#is-type level-1-2 | Enable iks-type as level1-2 |
PE2(config-router)#spf-interval-exp 10000 10000 | Enable spf interval value |
PE2(config-router)#metric-style wide | Enable metric style wide |
PE2(config-router)#microloop-avoidance level-1 | Enable microloop avoidance as level-1 |
PE2(config-router)#microloop-avoidance level-2 | Enable microloop avoidance as level-2 |
PE2(config-router)#mpls traffic-eng router-id 23.23.23.23 | Enable mpls traffic eng router-id |
PE2(config-router)#mpls traffic-eng level-1 | Enable MPLS Traffic Engineering as level-1. |
PE2(config-router)#mpls traffic-eng level-2 | Enable MPLS Traffic Engineering as level-2. |
PE2(config-router)#dynamic-hostname | Enable dynamic-hostname under ISIS process. |
PE2(config-router)#fast-reroute ti-lfa level-1 proto ipv4 | Enable ti-lfa with level-1 |
PE2(config-router)#fast-reroute ti-lfa level-2 proto ipv4 | Enable ti-lfa with level-2 |
PE2(config-router)#bfd all-interfaces | Enable bfd all interfaces |
PE2(config-router)#net 49.0000.0000.0023.00 | Configure Network entity title (NET). |
PE2(config-router)#passive-interface lo | Enable passive interface with loopback |
PE2(config-router)#segment-routing mpls | Enable segment routing mpls ISIS process. |
PE2(config-router)#exit | Exit router mode. |
PE2(config)#commit | Commit the candidate configuration to the running configuration |
Note: By default, PHP is enabled. To see all the labels in MPLS forwarding and ILM tables, we have enabled with non-php option.
Last modified date: 10/20/2023