H3C S5500-EI User Manual

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Ste
p
Command Remarks
4. Specify the router as the next
hop of routes sent to a peer or
a peer group.
peer { group-name | ip-address }
next-hop-local
Optional.
By default, IPv6 MBGP specifies
the local router as the next hop for
routes sent to an EBGP peer or a
peer group, but not for routes sent
to an MBGP IBGP peer or a peer
group.
Configuring the AS_PATH attributes
In general, MBGP checks whether the AS_PATH attribute of a route from a peer contains the local AS
number. If it does, it discards the route to avoid routing loops.
To configure the AS_PATH attributes:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view.
bgp as-number N/A
3. Enter IPv4 MBGP address
family view.
ipv4-family multicast N/A
4. Allow the local AS number to
appear in the AS_PATH of
routes from a peer or a peer
group and specify the number
of times that the local AS
number can appear in the
AS_PATH of routes from the
peer or the peer group.
peer { group-name | ip-address }
allow-as-loop [ number ]
Optional.
By default, the local AS number
cannot appear in routes from a
peer or a peer group.
5. Disable BGP from considering
the AS_PATH during best
route selection.
bestroute as-path-neglect
Optional.
By default, BGP considers
AS_PATH during best route
selection.
6. Configure updates to a peer
or a peer group not to keep
private AS numbers.
peer { group-name | ip-address }
public-as-only
Optional.
By default, BGP updates carry
private AS numbers.
Tuning and optimizing MBGP networks
This task involves resetting MBGP connections and configuring load balancing.
Before configuring this task, configure basic MBGP functions first.
Configuring MBGP soft reset
After modifying a route selection policy, you have to reset MBGP connections to make it take effect.

H3C S5500-EI Specifications

General

Brand	H3C
Model	S5500-EI
Category	Switch
Language	English