Enabling 4-Byte As Number Suppression - HP 6125G Configuration Manual

Step
5. Enable the non-standard ORF
capability for a BGP peer or
peer group.
6. Enable the ORF IP prefix
negotiation capability for a
BGP peer or peer group.
Table 6 Description of the both, send, and receive parameters and the negotiation result
Local parameter
send
receive
both

Enabling 4-byte AS number suppression

When a switch that supports 4-byte AS numbers sends an Open message for peer relationship
establishment, the Optional parameters field of the message indicates that the AS number occupies four
bytes—in the range of 1 to 4294967295. If the peer device does not support 4-byte AS numbers (for
examples, it supports only 2-byte AS numbers), the peer relationship cannot be established.
After you enable the 4-byte AS number suppression function, the peer device can then process the Open
message even though it does not support 4-byte AS numbers, and the IPv6 BGP peer relationship can be
established.
If the peer device supports 4-byte AS numbers, do not enable the 4-byte AS number suppression function;
otherwise, the IPv6 BGP peer relationship cannot be established.
To enable 4-byte AS number suppression:
Step
1. Enter system view.
2. Enter BGP view.
3. Enter IPv6 address
family view.
4. Enable 4-byte AS
number suppression.
Command
peer { group-name |
ipv6-address } capability-advertise
orf non-standard
peer { group-name | ip-address |
ipv6-address } capability-advertise
orf ipv6-prefix { both | receive |
send }
Peer parameter
•
receive
•
both
•
send
•
both
both
Command
system-view
bgp as-number
ipv6-family
peer { group-name | ip-address }
capability-advertise suppress-4-byte-as
242
Remarks
Optional.
By default, standard BGP ORF
capability defined in RFC 5291
and RFC 5292 is supported.
Not supported by default.
Negotiation result
The ORF sending capability is enabled locally and
the ORF receiving capability is enabled on the
peer.
The ORF receiving capability is enabled locally and
the ORF sending capability is enabled on the peer.
Both the ORF sending and receiving capabilities
are enabled locally and on the peer.
Remarks
N/A
N/A
N/A
Disabled by default.