Huawei Quidway NetEngine80E Configuration Manual page 812

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
l
Issue 02 (2014-09-30)
peer { ipv4-address | group-name } capability-advertise route-refresh
Route-refresh is enabled.
By default, route-refresh is enabled.
If route-refresh is enabled on all BGP devices and the import policy of the local device
is changed, the local device sends a route-refresh message to peers or peer groups.
After receiving the message, the peers or peer groups resend routing information to
the local BGP device. This enables the local device to dynamically refresh its BGP
routing table and apply the new routing policy without closing any BGP connections.
2. Configure BGP soft reset.
a. Run the refresh bgp [ vpn-instance vpn-instance-name ipv4-family | vpnv4 |
vpn-target | l2vpn-ad ] { all | ipv4-address | group group-name | external |
internal } { export | import } command in the user view to softly reset the BGP
connections between the devices and its peers or peer groups.
external softly resets an EBGP connection, and internal softly resets an IBGP
connection.
export triggers outbound BGP soft reset, and import triggers inbound BGP soft reset.
If the device's peers do not support route-refresh, perform the following operations:
– Configure the device to store all the routing updates received from its peers or peer
groups.
1. Run:
system-view
The system view is displayed.
2. Run:
bgp { as-number-plain | as-number-dot }
The BGP view is displayed.
3. Run:
ipv4-family unicast
The IPv4 unicast address family view is displayed.
4. Run:
peer { ipv4-address | group-name } keep-all-routes
The device is configured to store all the routing updates received from its peers
or peer groups.
By default, the device stores only the routing updates that are received from peers or
peer groups and match a configured import policy.
After this command is used, all routing updates sent by a specified peer or peer group
are stored, regardless of whether an import policy is used. When the local routing
policy changes, the information can be used to regenerate BGP routes again.
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8 BGP Configuration
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