Cisco ASR 9000 Series Routing Configuration Guide

Retaining Allocated Local Label for Primary Path
Perform the following tasks to retain the previously allocated local label for the primary path on the primary
PE for some configurable time after reconvergence:
SUMMARY STEPS
1.
configure
2.
router bgp as-number
3.
address-family { vpnv4 unicast | vpnv6 unicast }
4.
retain local-label minutes
5.
commit
DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Specifies the autonomous system number and enters the
BGP configuration mode, allowing you to configure the
BGP routing process.
router bgp as-number
Example:
RP/0/RSP0/CPU0:router(config)# router bgp 100
Step 2
Specifies the address family and enters the address family
configuration submode.
address-family { vpnv4 unicast | vpnv6 unicast }
Example:
RP/0/RSP0/CPU0:router(config-bgp)#
address-family vpnv4 unicast
Step 3
Retains the previously allocated local label for the primary
path on the primary PE for 10 minutes after reconvergence.
retain local-label minutes
Example:
RP/0/RSP0/CPU0:router(config-bgp-af)# retain
local-label 10
Step 4
commit
Step 5
Configuring BGP Additional Paths
Perform these tasks to configure BGP Additional Paths capability:
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
163
Implementing BGP
Retaining Allocated Local Label for Primary Path

Cisco ASR 9000 Series Specifications

General

Series	ASR 9000
Category	Network Router
Modular Design	Yes
Redundancy	Yes (Hardware and Software)
Operating System	Cisco IOS XR
Interfaces/Ports	10G, 40G, 100G, 400G Ethernet
Expansion Slots	Varies by model
Routing Protocol	BGP, OSPF, IS-IS, EIGRP
Management	CLI, SNMP, NETCONF
Power Supply	Redundant
Port Density	Varies by model
Power Supply Options	AC, DC
Memory	Varies by model
Storage	Varies by model
Dimensions	Varies by model
Weight	Varies by model