User's Manual

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offset
{type number | *} {
in
|
out
}
access-list-name offset
Apply an offset list.
59.2.5 Turning off Auto-Summary
The auto-summary of BEIGRP is different with other dynamic routing protocols, and it obeys the following rules:
 When a BEIGRP process defines several networks, as long as there is at least one sub-
net of this networks exists in the BEIGRP topology list, it creates the summary route of
the defined network.
 The established summary route points to interface Null0, and has the distance as the
minimum distance of all the sub-nets of the network included in the route. The summary
route is also injected into the main IP routing table with the management distance of 5
(unable to be configured)
 When sending update to the neighbors in different main IP network, the sub-nets
summarized by rule1 and rule 2 is cancelled and only a summary route will be sent.
 Do not perform summary towards the sub-nets of any networks not listed in BEIGRP
process definition.
Under certain network situations, you may wish to report every detailed route to the neighbor, and you may
use the following commands:
Command Purpose
no auto-summary
Turn off auto-summary of the route.
59.2.6 Customizing Route Summary
When auto-summary cannot meet the requirements, you may configure route summary on each interface
running BEIGRP and designate the destination addresses that need performing summary. The interfaces
configured for summary will not send the concrete update information of the sub -nets belonging this summary
address, while other interfaces are not affected.
Here, the summary operation follows the following rules:
 After an interface is configured for summary, it creates the summary route of the defined
network as long as this network has at least one sub-net in BEIGRP topology list;
 The summary route points to interface Null0, and has the distance as the minimum distance
of all the sub-nets of the network included in the route. The summary route is also injected
into the main IP routing table with the management distance of 5 (unable to be configured)
 When sending route update on the interface configured with summary range, the concrete
route belonging to the summary address will be canceled. The update to other interfaces are
not affected.
Command Purpose
ip beigrp
summary-address as-
number address mask
Configure route summary on an interface.
59.2.7 Redistributing Other Routes into the BEIGRP Process
The redistribute operation follows the below rules: