Allied Telesis AT-8824 Guía de instalación descargar pdf (Pagina 128)

2-6 Release Note

Software Version 2.7.5

C613-10454-00 REV A

The following figure shows valid combinations of action and clause inside a

route map.

Figure 2-1: Example structure of a route map

When to use

route maps

“Applying Filters” on page 2-20 describes in detail how to use route maps, but

this section summarises the uses.

For BGP, you can use route maps when:

■ copying routes from an update message to the RIB, by applying the route

map as the inroutemap on a BGP peer

■ determining which routes to import from other route sources, by applying

the route map to the import entry

■ determining which routes to advertise, by applying the route map as the

outroutemap on a BGP peer

When applied to a BGP peer, route maps can:

■ accept or reject update messages on the basis of origin, community, AS

path, next hop or Multi Exit Discriminator (MED)

■ accept or reject particular routes, by comparing the update message’s

routes with a prefix list

■ alter the attribute values in matching update messages.

Entry 1

Route Map 1

/jointfilesconvert/427458/bgp4-rm

action = include

Entry 2

action = exclude

Entry 3

action = include

match Any one of the match parameters

set One or more of the set parameters

match Any one of the match parameters

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Allied Telesis AT-8824 Guía de instalación Pagina 128