Dell PowerConnect B-FCXs, Configuration Manual

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PowerConnect B-Series FCX Configuration Guide 587
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Policy-based routing (PBR)
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The commands in this example configure an entry in a route map named “test-route”. The match
statement matches on IP information in ACL 99. The set statement changes the next-hop IP
address for packets that match to 192.168.2.1.
Syntax: [no]route-map <map-name> permit | deny <num>
The <map-name> is a string of characters that names the map. Map names can be up to 32
characters in length. You can define an unlimited number of route maps on the Dell PowerConnect
device, as long as system memory is available.
The permit | deny parameter specifies the action the Dell PowerConnect device will take if a route
matches a match statement:
•
If you specify deny, the Dell PowerConnect device does not apply a PBR policy to packets that
match the ACLs in a match clause. Those packets are routed normally,
•
If you specify permit, the Dell PowerConnect device applies the match and set statements
associated with this route map instance.
The <num> parameter specifies the instance of the route map you are defining. Routes are
compared to the instances in ascending numerical order. For example, a route is compared to
instance 1, then instance 2, and so on.
PBR uses up to six route map instances for comparison and ignores the rest.
Syntax: [no] match ip address <ACL-num-or-name>
The <ACL-num> parameter specifies a standard or extended ACL number or name.
Syntax: [no] set ip next hop <ip-addr>
This command sets the next-hop IP address for traffic that matches a match statement in the route
map.
Syntax: [no] set interface null0
This command sends the traffic to the null0 interface, which is the same as dropping the traffic.
Enabling PBR
After you configure the ACLs and route map entries, you can enable PBR globally, on individual
interfaces, or both as described in this section. To enable PBR, you apply a route map you have
configured for PBR globally or locally.
Enabling PBR globally
To enable PBR globally, enter a command such as the following at the global CONFIG level.
PowerConnect(config)#ip policy route-map test-route
This command applies a route map named “test-route” to all interfaces on the device for PBR.
Syntax: ip policy route-map <map-name>
Enabling PBR locally
To enable PBR locally, enter commands such as the following.
PowerConnect(config)#interface ve 1
PowerConnect(config-vif-1)#ip policy route-map test-route