Summary Automatic - H3C S9500 Series Command Manual

Command Manual – BGP
H3C S9500 Series Routing Switches

1.1.78 summary automatic

Syntax
summary automatic
undo summary automatic
View
BGP view, BGP-VPN instance view
Default Level
2: System level
Parameters
None
Description
Use the summary automatic command to enable automatic summarization for
redistributed subnets.
Use the undo summary automatic command to disable automatic summarization.
By default, automatic summarization is disabled.
Note that:
Neither the default route nor the routes imported using the network command can
be summarized automatically.
With this feature enabled, BGP limits the subnets redistribution from IGP to reduce
the size of routing table.
Examples
# In BGP view, enable automatic 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-vpn1] summary automatic
Chapter 1 BGP Configuration Commands
1-77