3com 3031 Instruccion De Instalación

C

HAPTER

 33: IP U

NICAST

 P

OLICY

 R

OUTING

 C

ONFIGURATION

, the higher the priority is, so the defined policy will be executed 

first. The policy can be used to redistribute route and perform policy routing when 
IP packets are forwarded. The contents of the policy will be specified by the 

if-match

 and 

apply

 clauses.

Perform the following task in system view.

 means applying policy routing for the packets meeting the conditions, and 

 means not applying policy routing for the packets meeting the conditions.

By default, no route-policy and the related node configuration is defined.

IP unicast policy routing provides two 

if-match

 clauses,

 if-match 

packet-length

 clause and

 if-match acl

 clause, i.e. determing which policy to 

be used according to IP packet length and IP address. One policy can include 
multiple if-match clauses, which can be used in combination.

Perform the following task in ROUTE-POLICY view.

By default, no if-match clause is defined.

IP unicast policy routing provides 5 apply clauses. One strategy can include 
multiple apply clauses, which can be used in combination.

Perform the following task in route-policy view.

Table 464   Establishing a route-policy

Establish a route-policy or a policy node

route-policy policy-name { permit | 
deny } node sequence-number

Delete a route-policy or a policy node

undo route-policy policy-name [ 
permit | deny ] 

Table 465   Defining if-match clause of policy routing

Specify matching to be IP packet 
the length

Specify matching to be IP address

Table 466   Defining apply clause of policy routing

Set packet precedence

Set packet transmitting 
interface

apply output-interface interface-type 
interface-number [ ... interface-type 
interface-number ]

Set packet next-hop

apply ip-address next-hop ip-address [ ... 
ip address ]

Set packet default transmitting 
interface

apply default output-interface 
interface-type interface-number [ ... 
interface-type interface-number ]