Dell S4048-ON, Configuration Manual

Page: 132 / 1039

distribute-list prefix-list-name out [ interface | connected | static | ospf]
Example of Viewing Configured Prefix Lists (ROUTER RIP mode)
To view the configuration, use the
show config
command in ROUTER RIP mode, or the
show running-config rip
command in EXEC mode.
Dell(conf-router_rip)#show config
!
router rip
distribute-list prefix juba out
network 10.0.0.0
Dell(conf-router_rip)#router ospf 34
Applying a Filter to a Prefix List (OSPF)
To apply a filter to routes in open shortest path first (OSPF), use the following commands.
• Enter OSPF mode.
CONFIGURATION mode
router ospf
• Apply a configured prefix list to incoming routes. You can specify an interface.
If you enter the name of a non-existent prefix list, all routes are forwarded.
CONFIG-ROUTER-OSPF mode
distribute-list prefix-list-name in [ interface ]
• Apply a configured prefix list to incoming routes. You can specify which type of routes are affected.
If you enter the name of a non-existent prefix list, all routes are forwarded.
CONFIG-ROUTER-OSPF mode
distribute-list prefix-list-name out [connected | rip | static]
Example of Viewing Configured Prefix Lists (ROUTER OSPF mode)
To view the configuration, use the
show config
command in ROUTER OSPF mode, or the
show running-config ospf
command in EXEC mode.
Dell(conf-router_ospf)#show config
!
router ospf 34
network 10.2.1.1 255.255.255.255 area 0.0.0.1
distribute-list prefix awe in
Dell(conf-router_ospf)#
ACL Resequencing
ACL resequencing allows you to re-number the rules and remarks in an access or prefix list.
The placement of rules within the list is critical because packets are matched against rules in sequential order. To order new rules
using the current numbering scheme, use resequencing whenever there is no opportunity.
For example, the following table contains some rules that are numbered in increments of 1. You cannot place new rules between
these packets, so apply resequencing to create numbering space, as shown in the second table. In the same example, apply
resequencing if more than two rules must be placed between rules 7 and 10.
You can resequence IPv4 and IPv6 ACLs, prefixes, and MAC ACLs. No CAM writes happen as a result of resequencing, so there is no
packet loss; the behavior is similar Hot-lock ACLs.
132
Access Control Lists (ACLs)