3Com 4800G Series, Configuration Manual

Page: 420 / 1246

420 C
HAPTER
31: R
OUTING
P
OLICY
C
ONFIGURATION
cannot match any if-match clause of the node, it will go to the next node for a
match.
■
When a routing policy is defined with more than one node, at least one node
should be configured with the
permit keyword. If the routing policy is used to
filter routing information, routing information that does not meet any node’s
conditions cannot pass the routing policy. If all nodes of the routing policy are
set using the
deny keyword, no routing information can pass it.
Defining if-match
Clauses for the Routing
Policy
Follow these steps to define if-match clauses for a route-policy:
To do… Use the command… Remarks
Enter system view system-view -
Enter routing policy view route-policy
route-policy-name
{ permit | deny } node
node-number
-
Define match
criteria for IPv4
routes Match IPv4 routes
having destinations
specified in the ACL if-match acl acl-number Optional
Not configured by
default
Match IPv4 routes
having destinations
specified in the IP prefix
list if-match ip-prefix
ip-prefix-name
Match IPv4 routes
having next hops or
sources specified in the
ACL or IP prefix list if-match ip { next-hop |
route-source } { acl
acl-number | ip-prefix
ip-prefix-name }
Optional
Not configured by
default
Match routes having AS path attributes
specified in the AS path list (s) if-match as-path
as-path-number &<1-16>
Optional
Not configured by
default
Match routes having community attributes in
the specified community list(s) if-match community
{ basic-community-list-nu
mber [ whole-match ] |
adv-community-list-num
ber
}&<1-16>
Optional
Not configured by
default
Match routes having the specified cost if-match cost value Optional
Not configured by
default
Match BGP routes having extended attributes
contained in the extended community list(s) if-match
extcommunity
ext-comm-list-number &<
1-16>
Optional
Not configured by
default
Match routes having specified outbound
interface(s) if-match interface
{ interface-type
interface-number }&<1-1
6>
Optional
Not configured by
default