Ospf Configuration Commands; Abr-Summary - 3Com 5500-EI PWR Reference Manual

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OSPF Configuration Commands

The term router in this chapter refers to a router in a generic sense or an Ethernet switch running a
routing protocol.
OSPF Configuration Commands

abr-summary

Syntax
abr-summary ip-address mask [ advertise | not-advertise ]
undo abr-summary ip-address mask
View
OSPF area view
Parameters
ip-address: Network address of the summary route, in dotted decimal notation.
mask: Subnet mask of the summary route, in dotted decimal notation.
advertise: Advertises the summary route. If this argument is not provided, the summary route will be
advertised.
not-advertise: Specifies not to advertise the summary route.
Description
Use the abr-summary command to enable route summarization on an area border router (ABR).
Use the undo abr-summary command to disable route summarization on an ABR.
By default, route summarization is disabled on an ABR.
This command is applicable to ABRs only and is used for route summarization of routes described by
Type-3 LSAs in an area. It allows an ABR to advertise the summary route in a Type-3 LSA to other
areas instead of other more specific routes.
You can configure multiple summary routes for an area.
With the undo abr-summary command used, summarized routes will be advertised.
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