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Enabling 4-byte as number suppression, Enabling quick ebgp session reestablishment – H3C Technologies H3C SR8800 User Manual

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Table 5 Description of the both, send, and receive parameters and the negotiation result

Local parameter

Peer parameter Negotiation

result

send

receive

both

The ORF sending capability is enabled locally and the
ORF receiving capability is enabled on the peer.

receive

send

both

The ORF receiving capability is enabled locally and the
ORF sending capability is enabled on the peer.

both both

Both the ORF sending and receiving capabilities are
enabled locally and on the peer, respectively.

Enabling 4-byte AS number suppression

The device supports 4-byte AS numbers and uses 4-byte AS numbers by default. If the peer devices

support only 2-byte AS numbers, you must enable the 4-byte AS number suppression function on the
device.
To enable 4-byte AS number suppression:

Step Command

Remarks

1.

Enter system view.

system-view N/A

2.

Enter BGP view.

bgp as-number

N/A

3.

Enable 4-byte AS
number suppression.

peer { group-name | ip-address }
capability-advertise suppress-4-byte-as

Disabled by default

NOTE:

If the peer device supports 4-byte AS numbers, do not enable the 4-byte AS number suppression function;
otherwise, the BGP peer relationship cannot be established.

Enabling quick EBGP session reestablishment

If the router receives no keepalive messages from a BGP peer within the holdtime, it disconnects from the

peer.
With quick EBGP connection reestablishment enabled, the router, when the link to a directly connected
EBGP peer is down, will reestablish a session to the EBGP peer immediately.
To enable quick EBGP session reestablishment:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter BGP view.

bgp as-number

N/A

3.

Enable quick EBGP session

reestablishment.

ebgp-interface-sensitive

Optional
Not enabled by default