Specifying The Source Interface For Establishing Tcp Connections; Allowing The Establishment Of An Indirect Ebgp Connection; Configuring A Description For An Ipv6 Peer Or Peer Group - HPE FlexNetwork HSR6800 Configuration Manual

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, Hewlett Packard Enterprise recommends that you use 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
Enter system view.
1.
Enter BGP view.
2.
Enter IPv6 address family
3.
view.
Specify the source interface
4.
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
Enter system view.
1.
Enter BGP view.
2.
Enter IPv6 address family view.
3.
Allow the establishment of EBGP
4.
connection to an indirectly connected
peer or peer group.

Configuring a description for an IPv6 peer or peer group

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
peer { ipv6-group-name |
ipv6-address } ebgp-max-hop
[ hop-count ]
355
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
Not configured by
default.