Specifying The Source Interface For Establishing Tcp Connections; Allowing The Establishment Of An Indirect Ebgp Connection - HP MSR Series Configuration Manual

Step
4. Configure a preferred value
for routes received from an
IPv6 peer or peer group.
Specifying the source interface for establishing TCP
connections
IPv6 BGP uses TCP as the transport layer protocol. By default, IPv6 BGP uses the output interface of the
optimal route to a peer or peer group as the source interface for establishing TCP connections to the peer
or peer group.
If an IPv6 BGP router has multiple links to a peer, and the source interface fails, IPv6 BGP must reestablish
TCP connections, causing network oscillation. To enhance stability of IPv6 BGP connections, HP
recommends using a loopback interface as the source interface.
To establish a BGP connection, specify on the local router the source interface for establishing the TCP
connection to the peer on the peering BGP router. Otherwise, the local BGP router might fail to establish
TCP connection to the peer when using the outbound interface of the best route as the source interface.
To specify the source interface for establishing TCP connections to a BGP peer or peer group:
Step
1. Enter system view.
2. Enter BGP view.
3. Enter IPv6 address family
view.
4. Specify the source interface
for establishing TCP
connections to an IPv6 BGP
peer or peer group.

Allowing the establishment of an indirect EBGP connection

In general, direct links must be available between EBGP peers. If not, you can use the peer
ebgp-max-hop command to establish a multi-hop TCP connection in between. However, you need not
use this command for direct EBGP connections with loopback interfaces.
To allow the establishment of EBGP connection to an indirectly connected peer or peer group:
Step
1. Enter system view.
2. Enter BGP view.
3. Enter IPv6 address family view.
Command
peer { ipv6-group-name |
ipv6-address } preferred-value
value
Command
system-view
bgp as-number
ipv6-family
peer { ipv6-group-name |
ipv6-address } connect-interface
interface-type interface-number
Command
system-view
bgp as-number
ipv6-family
346
Remarks
By default, the preferred value is 0.
IPv6 BGP-VPN instance view does
not support the ipv6-group-name
argument.
Remarks
N/A
N/A
N/A
By default, IPv6 BGP uses the
outbound interface of the best
route to the IPv6 BGP peer or peer
group as the source interface for
establishing a TCP connection.
Remarks
N/A
N/A
N/A