HP MSR2000/3000/4000 Router Series Layer 3 - IP Routing Command Reference

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display bgp update-group ipv4 unicast
Use display bgp update-group ipv4 unicast to display information about BGP update groups for the BGP
IPv4 unicast address family.
Syntax
display bgp update-group ipv4 [ unicast ] [ vpn-instance vpn-instance-name ] [ ip-address ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
vpn-instance vpn-instance-name: Displays BGP update group information for the MPLS L3VPN instance
specified by its name, a case-sensitive string of 1 to 31 characters. If no VPN instance is specified, the
command displays BGP IPv4 unicast address family update group information for the public network.
ip-address: Displays BGP update group information for the specified BGP peer.
Usage guidelines
The update group feature classifies BGP peers that have the same export policy into an update group.
When BGP advertises routes to the peers in the update group, it uses the export policy to filter the routes
and generates route updates for all the peers only once.
With this feature, BGP performs one-time policy filtering and encapsulation for a prefix before
advertising the prefix to all the peers in the update group. For example, BGP advertises 1000 prefixes to
1000 peers that have the same export policy (in data centers for example). Without the update group
feature, BGP matches the export policy 1000 × 1000 times. With the update group feature, BGP
matches the export policy only 1000 × 1 times, improving encapsulation efficiency 1000 times.
If no parameters are specified, this command displays all update groups for the public network.
The command with the unicast keyword has the same effect as that without the unicast keyword.
Examples
# Display information about all BGP update groups for the public network.
<Sysname> display bgp update-group ipv4
Update-group ID: 0
Type: EBGP link
4-byte AS number: Supported
Minimum time between advertisements: 30 seconds
OutQ: 0
Members: 1
99.1.1.1
# Display update group information for the peer 1.1.1.2 in the public network.
<Sysname> display bgp update-group ipv4 1.1.1.2
Update-group ID: 0