Configuring Bgp Soft-Reset - HP FlexFabric 12900E Series Configuration Manual

To configure GTSM for BGP (IPv4 unicast/multicast address family):
Step
1. Enter system view.
2. Enter BGP instance view or
BGP-VPN instance view.
3. Configure GTSM for the
specified BGP peer or peer
group.
To configure GTSM for BGP (IPv6 unicast address family):
Step
1. Enter system view.
2. Enter BGP instance view or
BGP-VPN instance view.
3. Configure GTSM for the
specified BGP peer or peer
group.

Configuring BGP soft-reset

After you modify the route selection policy, for example, modify the preferred value, you must reset
BGP sessions to apply the new policy. The reset operation tears down and re-establishes BGP
sessions.
To avoid tearing down BGP sessions, you can use one of the following soft-reset methods to apply
the new policy:
•
Enabling route-refresh—The BGP router advertises a route-refresh message to the specified
peer, and the peer resends its routing information to the router. After receiving the routing
information, the router filters the routing information by using the new policy.
This method requires that both the local router and the peer support route refresh.
•
Saving updates—Use the peer keep-all-routes command to save all route updates from the
specified peer. After modifying the route selection policy, filter routing information by using the
new policy.
Command
system-view
•
Enter BGP instance view:
bgp as-number [ instance
instance-name
[ multi-session-thread ]
•
Enter BGP-VPN
view:
a. bgp as-number [ instance
instance-name
[ multi-session-thread ]
b. ip vpn-instance
vpn-instance-name
peer { group-name | ipv4-address
[ mask-length ] } ttl-security hops
hop-count
Command
system-view
•
Enter BGP instance view:
bgp as-number [ instance
instance-name
[ multi-session-thread ]
•
Enter BGP-VPN
view:
a. bgp as-number [ instance
instance-name
[ multi-session-thread ]
b. ip vpn-instance
vpn-instance-name
peer { group-name | ipv6-address
[ prefix-length ] } ttl-security hops
hop-count
268
Remarks
N/A
]
instance
N/A
]
By default, GTSM is disabled.
Remarks
N/A
]
instance
N/A
]
By default, GTSM is disabled.