H3C Technologies H3C SR8800 - Manual (Page 226)

210
Step Command Remarks
1. Enter system view. system-view N/A
2. Configure a global router ID. router id router-id
Optional.
Not configured by
default.
If no global router ID is configured,
the highest loopback interface IP
address—if any—is used as the
router ID. If no loopback interface IP
address is available, the highest
physical interface IP address is used,
regardless of the interface status.
3. Enable BGP and enter BGP
view.
bgp as-number Not enabled by default.
4. Specify a router ID. router-id router-id
Optional.
By default, the global router ID is
used.
5. Specify a peer or a peer
group and its AS number.
peer { group-name | ip-address }
as-number as-number
Not specified by default.
6. Enable the default use of IPv4
unicast address family for the
peers that are established
using the peer as-number
command.
default ipv4-unicast
Optional.
Enabled by default.
7. Enable a peer. peer ip-address enable
Optional.
Enabled by default.
8. Configure a description for a
peer/peer group. peer { group-name | ip-address }
description description-text
Not configured by default.
NOTE:
•
Since a router can reside in only one AS, the router can run only one BGP process.
• You must create a peer group before configuring it.
Specifying the source interface for TCP connections
BGP uses TCP as the transport layer protocol. By default, BGP uses the output interface of the optimal
router to a peer as the source interface for establishing TCP connections to the peer. If a BGP router has
multiple links to a peer, when the source interface fails, BGP has to reestablish TCP connections, causing
network oscillation. To enhance stability of BGP connections, H3C recommends using a loopback
interface as the source interface.
To specify the source interface of TCP connections:
Step Command Remarks
1. Enter system view. system-view N/A