R2511-HP MSR Router Series Layer 3 - IP Routing Command Reference(V5)

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You can specify a router ID manually. Otherwise, the system selects the highest IP address among
loopback interface addresses as the router ID. If no loopback interface addresses are available, the
system selects the highest IP address among physical interface IP addresses as the router ID. Specify a
loopback interface address as the router ID to enhance network reliability.
If the interface whose IP address is selected as the router ID or the manual router ID is deleted, the system
selects a new router ID for the router.
Examples
# Specifies the router ID as 10.18.4.221.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] router-id 10.18.4.221
Related commands
router id
summary automatic
Use summary automatic to enable automatic summarization for redistributed subnets.
Use undo summary automatic to disable automatic summarization.
Syntax
summary automatic
undo summary automatic
Default
Automatic summarization is disabled.
Views
BGP view, BGP-VPN instance view
Default command level
2: System level
Usage guidelines
Neither the default route nor the routes imported using the network command can be summarized
automatically.
The summary automatic command helps BGP limit the number of routes redistributed from IGP to reduce
the size of the routing table.
Examples
# In BGP view, enable automatic route summarization.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] summary automatic
# In BGP-VPN instance view, enable automatic summarization (the VPN has been created).
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ipv4-family vpn-instance vpn1
[Sysname-bgp-ipv4-vpn1] summary automatic