3Com S7906E - Switch, Руководство по настройке

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Figure 1-18 Next hop attribute configuration
Note that: if you have configured BGP load balancing on a BGP router, the router will set it as the next
hop for routes sent to an iBGP peer/peer group regardless of whether the peer next-hop-local
command is configured.
Follow these steps to configure the next hop attribute:
To do… Use the command… Remarks
Enter system view system-view
—
Enter BGP view bgp as-number
—
Specify the router as the next hop of
routes sent to a peer/peer group peer { group-name |
ip-address } next-hop-local
Optional
By default, the router sets
it as the next hop for
routes sent to an eBGP
peer/peer group, but
does not set it as the next
hop for routes sent to an
iBGP peer/peer group.
Configuring the AS-PATH Attribute
Permit local AS number to appear in routes from a peer/peer group
In general, BGP checks whether the AS_PATH attribute of a route from a peer contains the local AS
number. If so, it discards the route to avoid routing loops.
This task allows you to permit local AS number to appear in routes from a peer/peer group and specify
the appearance times.
To do… Use the command… Remarks
Enter system view system-view
—
Enter BGP view bgp as-number
—
Permit local AS number to appear in
routes from a peer/peer group and
specify the appearance times peer { group-name |
ip-address } allow-as-loop
[ number ]
Optional
By default, the local AS
number is not allowed.
Disable BGP from considering AS_PATH during best route selection
Follow these steps to disable BGP from considering AS_PATH during best route selection: