Update Groups - Cisco NCS 5500 Series Configuration Manual

Update Groups

Specifies the autonomous system number and enters the BGP configuration mode, allowing you to configure the BGP
routing process.
Step 3 vrf vrf-name
Example:
RP/0/RP0/CPU0:router(config-bgp)# vrf vrf_a
Enables BGP routing for a particular VRF on the PE router.
Step 4 address-family { ipv4 | ipv6 } unicast
Example:
RP/0/RP0/CPU0:router(config-vrf)# address-family ipv4 unicast
Specifies either an IPv4 or IPv6 address family unicast and enters address family configuration submode.
To see a list of all the possible keywords and arguments for this command, use the CLI help (?).
Step 5 Do one of the following:
• redistribute connected [ metric metric-value ] [ route-policy route-policy-name ]
• redistribute isis process-id [ level { 1 | 1-inter-area | 2 }] [ metric metric-value ] [ route-policy
route-policy-name ]
• redistribute ospf process-id [ match { external [ 1 | 2 ] | internal | nssa-external [ 1 | 2 ]}] [ metric
metric-value ] [ route-policy route-policy-name ]
• redistribute ospfv3 process-id [ match { external [ 1 | 2 ] | internal | nssa-external [ 1 | 2 ]}] [ metric
metric-value ] [ route-policy route-policy-name ]
• redistribute rip [ metric metric-value ] [ route-policy route-policy-name ]
• redistribute static [ metric metric-value ] [ route-policy route-policy-name ]
Example:
RP/0/RP0/CPU0:router(config-bgp-vrf-af)# redistribute ospf 1
Configures redistribution of a protocol into the VRF address family context.
The redistribute command is used if BGP is not used between the PE-CE routers. If BGP is used between PE-CE routers,
the IGP that is used has to be redistributed into BGP to establish VPN connectivity with other PE sites. Redistribution
is also required for inter-table import and export.
Step 6 commit
Update Groups
The BGP Update Groups feature contains an algorithm that dynamically calculates and optimizes update
groups of neighbors that share outbound policies and can share the update messages. The BGP Update Groups
BGP Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.2.x
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Implementing BGP