R0106-HP MSR Router Series Layer 3 - IP Routing Command Reference(V7)

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Predefined user roles
network-admin
network-operator
Parameters
ipv4: Displays BGP update group information for IPv4 address family.
ipv6: Displays BGP update group information for IPv6 address family.
vpnv4: Displays BGP update group information for VPNv4 address family.
l2vpn: Displays BGP update group information for L2VPN address family.
vpnv6: Displays BGP update group information for VPNv6 address family.
mdt: Displays BGP update group information for MDT address family.
multicast: Displays BGP update group information for multicast address family.
unicast: Displays BGP update group information for unicast address family.
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 update group information for the public network.
ip-address: Displays BGP update group information for the specified BGP peer.
ipv6-address: Displays BGP update group information for the specified IPv6 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 specified address family
on the public network.
By default, the unicast keyword is used if neither the multicast keyword nor the unicast keyword is
specified.
Examples
# Display information about all public BGP update groups for IPv4 unicast address family.
<Sysname> display bgp update-group ipv4
Update-group ID: 0
Type: EBGP link
4-byte AS number: Supported
Site-of-Origin: Not specified
Minimum time between advertisements: 30 seconds
OutQ: 0
Members: 1
99.1.1.1