H3C Technologies H3C S12500 Series Switches - Manual (Page 386)

370
Local parameter Peer parameter Negotiation result
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.
Enabling 4-byte AS number suppression
When a device 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 BGP peer relationship cannot be established.
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. Enter IPv6 address
family view or IPv6
BGP-VPN instance view.
ipv6-family [ vpn-instance
vpn-instance-name ]
N/A
4. Enable 4-byte AS
number suppression. peer { group-name | ipv6-address }
capability-advertise suppress-4-byte-as
Disabled by default.
The IPv6 BGP-VPN instance view
does not support the group-name
argument.
Configuring the maximum number of ECMP routes
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter BGP view. bgp as-number N/A
3. Enter IPv6 address family view
or IPv6 BGP-VPN instance
view.
ipv6-family [ vpn-instance
vpn-instance-name ]
N/A
4. Configure the maximum
number of ECMP routes.
balance number
By default, no load balancing is
enabled.