Specifying The Source Interface For Tcp Connections - HP 3600 v2 series Configuration Manual

Follow these steps to create a BGP connection:
To do...
Enter system view
Configure a global router ID
Enable BGP and enter BGP view
Specify a router ID
Specify a peer or a peer group and
its AS number
Enable the default use of IPv4
unicast address family for the peers
that are established using the peer
as-number command
Enable a peer
Configure a description for a
peer/peer group
NOTE:
A router can reside in only one AS, so 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
route to a peer/peer group as the source interface for establishing TCP connections to the peer or peer
group.
If a BGP router has multiple links to a peer, and the source interface fails, BGP must reestablish TCP
connections, causing network oscillation. To enhance stability of BGP connections, HP recommends
using a loopback interface as the source interface.
Follow these steps to specify the source interface for TCP connections:
To do...
Enter system view
Use the command...
system-view
router id router-id
bgp as-number
router-id router-id
peer { group-name | ip-address }
as-number as-number
default ipv4-unicast
peer ip-address enable
peer { group-name | ip-address }
description description-text
Use the command...
system-view
205
Remarks
—
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.
Required
Not enabled by default
Optional
By default, the global router ID is
used.
Required
Not specified by default
Optional
Enabled by default
Optional
Enabled by default
Not configured by default.
Remarks
—