Allied Telesis AT-8824 Guía de instalación descargar pdf (Pagina 169)

Filtering IP Routes add ip route filter 2-47

Software Version 2.7.5

C613-10454-00 REV A

DIrection Whether the router or switch applies this filter to routes that the

routing protocol receives or routes that it advertises. The routing

protocol is specified using the protocol parameter.

Default: both

RECeive The router or switch applies this filter to routes that the

routing protocol receives, to determine whether to

write those routes into the RIB.

If protocol=ospf, a route filter with direction=receive

filters routes when copying them from the LSA

database to the RIB. If a filter excludes a matching route

from the RIB, OSPF does not advertise a summary LSA

for that route because summary LSA messages are

derived from the filtered RIB. This means that incorrect

filters can prevent Area Border Routers from advertising

routes to other areas. Plan your filters carefully.

SENd The router or switch applies this filter to routes, to

determine whether the routing protocol will advertise

the routes.

If protocol=ospf, a route filter with direction=send

only matches AS external routes (BGP, RIP and static

routes) and summary routes.

BOTH The router or switch applies this filter to determine

which routes to write into the RIB and which routes to

advertise.

INTerface The interface to which the filter applies. The router or switch only uses

this filter on routes that are received on this interface, or that will be

advertised out this interface. Valid interfaces are:

• eth (such as eth0, eth0-1)

• ATM (such as atm0.1)

• PPP (such as ppp0, ppp1-1)

• FR (such as fr0, fr0-1)

• X.25 DTE (such as x25t0, x25t0-1)

• VLAN (such as vlan1, vlan1-1)

To see a list of interfaces currently available, use the show ip

interface command.

If protocol=ospf, this parameter has no effect. The router or switch

always applies the filter on all interfaces.

Default: no default (the router or switch applies this filter to routes on

all interfaces)

NEXThop The IP address of the next hop router. If you specify this, the router or

switch applies this filter to routes that specify this next hop.

Default: no default

POLIcy The value of the route’s Type of Service, from 0 to 7. The filter matches

routes with this TOS setting.

Default: no default

Parameter (cont.) Description (cont.)

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Allied Telesis AT-8824 Guía de instalación Pagina 169

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