Route Maps; Implementation Information; Important Points To Remember - Dell Force10 MXL Blade Configuration Manual

Figure 5-22. Resequencing Remarks
FTOS(conf-ext-nacl)# show config
!
ip access-list extended test
remark 4 XYZ
remark 5 this remark corresponds to permit any host 1.1.1.1
seq 5 permit ip any host 1.1.1.1
remark 9 ABC
remark 10 this remark corresponds to permit ip any host 1.1.1.2
seq 10 permit ip any host 1.1.1.2
seq 15 permit ip any host 1.1.1.3
seq 20 permit ip any host 1.1.1.4
FTOS# end
FTOS# resequence access-list ipv4 test 2 2
FTOS# show running-config acl
!
ip access-list extended test
remark 2 XYZ
remark 4 this remark corresponds to permit any host 1.1.1.1
seq 4 permit ip any host 1.1.1.1
remark 6 this remark has no corresponding rule
remark 8 this remark corresponds to permit ip any host 1.1.1.2
seq 8 permit ip any host 1.1.1.2
seq 10 permit ip any host 1.1.1.3
seq 12 permit ip any host 1.1.1.4

Route Maps

Similar to ACLs and prefix lists, route maps are composed of a series of commands that contain a
matching criterion and an action, yet route maps can change the packets meeting the criterion. ACLs and
prefix lists can only drop or forward the packet or traffic. Route maps process routes for route
redistribution. For example, a route map can be called to filter only specific routes and to add a metric.
Route maps also have an "implicit deny." Unlike ACLs and prefix lists, however, where the packet or
traffic is dropped, in route maps, if a route does not match any of the route map conditions, the route is not
redistributed.

Implementation Information

FTOS implementation of route maps allows route maps with no match command or no set command.
When there is no match command, all traffic matches the route map and the set command applies.

Important Points to Remember

• For route-maps with more than one match clause:
• Two or more match clauses within the same route-map sequence have the same match commands
(though the values are different), matching a packet against these clauses is a logical OR operation.
• Two or more match clauses within the same route-map sequence have different match commands,
matching a packet against these clauses is a logical AND operation.
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