Configuring The As_Path Attribute - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
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9.3.7 Configuring the AS_Path Attribute

The AS_Path attribute is used to prevent routing loops and control route selection.
Procedure
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Issue 02 (2014-09-30)
bgp { as-number-plain | as-number-dot }
The BGP view is displayed.
3. Run:
ipv6-family [ unicast ]
The BGP IPv6 unicast address family view is displayed.
4. Run:
peer ipv6-address next-hop-local
The local address is configured as the next hop when routes are advertised.
In some networking environments, to ensure that the IBGP neighbors find the correct
next hop, configure the next hop address as its own address when routes are advertised
to the IBGP peers.
NOTE
If BGP load balancing is configured, the local router changes the next hop address to its own
address when advertising routes to the IBGP peer groups, regardless of whether the peer next-
hop-local command is used.
The next-hop iteration based on the routing policy
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:
ipv6-family [ unicast ]
The BGP-IPv6 unicast address family view is displayed.
4. Run:
nexthop recursive-lookup route-policy route-policy-name
The next-hop iteration based on the specified routing policy is enabled.
By default, the next-hop iteration based on the specified routing policy is disabled.
The next-hop iteration based on the specified routing policy can control the iterated
route according to certain conditions. The route that fails to pass the policy is ignored.
Configure the AS_Path Attribute in the IPv6 Address Family View.
1. Run:
system-view
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9 BGP4+ Configuration
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