Allied Telesis AT-8824 Guía de instalación descargar pdf (Pagina 141)

Filtering IP Routes 2-19

Software Version 2.7.5

C613-10454-00 REV A

How to configure an entry with a set clause

Once you have determined what routes a route map entry matches, you can

configure set clauses to change the characteristics of matching items.

To create a set clause for an entry, use one of the commands shown in the

following table.

Creating IP Route Filters

To create a route filter, use the command:

add ip route filter[=filter-id] ip=ipadd mask=ipadd

action={include|exclude} [direction={receive|send|both}]

[interface=interface] [nexthop=ipadd] [policy=0..7]

[protocol={any|ospf|rip}]

The protocol parameter specifies the routing protocol to which the filter

applies. When direction is receive, then protocol specifies the routing protocol

that receives the route information. If direction is send, protocol specifies the

routing protocol that advertises the routes.

When the routing protocol receives or transmits a route, it searches the list of

route filters for a match to the route. The ip, mask, interface, nexthop, and

policy parameters define a pattern to match against. The action parameter

determines whether routes matching the pattern are used or discarded.

The router or switch checks each route against each filter, starting with the

lowest-numbered filter, until it finds a match. Then it applies that filter and

stops processing the list of filters.

When you create a list of filters—even a list of only one filter—the router or

switch ends the list with an implicit filter to exclude all routes. So if you want

the router or switch to include all routes that do not match your filters, end

your filter list with a filter that matches all routes and includes them, such as:

add ip route filter=100 ip=*.*.*.* mask=*.*.*.*

action=include

Command Result

add ip routemap=routemap entry=1..4294967295

set metric=0..4294967295

Sets the OSPF metric of matching

routes. Routes with a lower metric

are preferred.

add ip routemap=routemap entry=1..4294967295

set type={1|2}

Sets the route type of matching

routes to External Type 1 or

External Type 2. See Routing with

OSPF in the OSPF chapter of the

Software Reference for more

information about route types.

add ip routemap=routemap entry=1..4294967295

set tag=1..65535

Tags the matching routes with an

ID number. You can then use the

tag to select routes to import into

BGP—see “Filtering when

copying routes to BGP” on

page 2-23.

Route map set clauses

for OSPF

1 2 ... 136 137 138 139 140 141 142 143 144 145 146 ... 201 202

Comentarios a estos manuales

Sin comentarios

Allied Telesis AT-8824 Guía de instalación Pagina 141

Comentarios a estos manuales

Relacionado con productos y manuales para Los conmutadores de red Allied Telesis AT-8824