H3C Technologies H3C S5560 Series Switches User Manual
Page 259
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Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP view or BGP-VPN
instance view.
•
Enter BGP view:
bgp as-number
•
Enter BGP-VPN instance view:
a.
bgp as-number
b.
ip vpn-instance
vpn-instance-name
N/A
3.
Configure the interval for
sending updates for the same
route to a peer or peer group.
peer { group-name | ipv6-address
[ prefix-length ] }
route-update-interval interval
By default, the interval is 15
seconds for an IBGP peer and 30
seconds for an EBGP peer.
Enabling BGP to establish an EBGP session over multiple hops
IMPORTANT:
When GTSM is configured, the local device can establish an EBGP session with the peer after both devices
pass GTSM check, regardless of whether the maximum number of hops is reached.
To establish an EBGP connection, two routers must have a direct physical link. If no direct link is available,
you must use the peer ebgp-max-hop command to enable BGP to establish an EBGP session over
multiple hops and specify the maximum hops.
If directly connected EBGP peers use loopback interfaces to establish a BGP session, you do not need to
configure the peer ebgp-max-hop command.
To enable BGP to establish an indirect EBGP session (IPv4):
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP view or BGP-VPN
instance view.
•
Enter BGP view:
bgp as-number
•
Enter BGP-VPN instance view:
a.
bgp as-number
b.
ip vpn-instance
vpn-instance-name
N/A
3.
Enable BGP to establish an
EBGP session to an
indirectly-connected peer or
peer group and specify the
maximum hop count.
peer { group-name | ip-address
[ mask-length ] } ebgp-max-hop
[ hop-count ]
By default, BGP cannot establish
an EBGP session to an
indirectly-connected peer or peer
group.
To enable BGP to establish an indirect EBGP session (IPv6):
Step Command
Remarks
1.
Enter system view.
system-view
N/A