3Com MSR 50 Network Router User Manual


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996 CHAPTER 72: BGP CONFIGURATION COMMANDS
export: Applies the filter to routes advertised to the specified peer/peer group.
import: Applies the filter to routes received from the specified peer/peer group.
Description Use the
peer ip-prefix command to reference an IP prefix list to filter routes
received from or advertised to a peer or peer group.
Use the
undo peer ip-prefix command to remove the configuration.
By default, no IP prefix list is specified.
Examples # In BGP view, use the IP prefix list list 1 to filter routes advertised to the peer
group test.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] peer test ip-prefix list1 export
# In BGP-VPN view, use the IP prefix list list 1 to filter routes advertised to the peer
group test (the VPN has been created).
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ipv4-family vpn-instance vpn1
[Sysname-bgp-vpn1] peer test ip-prefix list1 export
peer keep-all-routes (BGP/BGP-VPN instance view)
Syntax peer { group-name | ip-address } keep-all-routes
undo peer { group-name | ip-address } keep-all-routes
View BGP view/BGP-VPN instance view
Parameters group-name: Name of a peer group, a string of 1 to 47 characters.
ip-address: IP address of a peer.
Description Use the
peer keep-all-routes command to save original routing information
from a peer or peer group, even routes that failed to pass the inbound policy (if
configured).
Use the
undo peer keep-all-routes command to disable this function.
By default, the function is not enabled.
Examples # In BGP view, save routing information from peer 131.100.1.1.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] peer 131.100.1.1 as-number 200
[Sysname-bgp] peer 131.100.1.1 keep-all-routes