Administrator Guide

A recursive route is a route for which the immediate next-hop address is learned dynamically through a routing protocol and acquired
through a route lookup in the routing table. The user can congure multiple recursive routes in a redirect list by entering multiple seq
redirect statements with the same source and destination address and specify a dierent next-hop IP address. In this way, the recursive
routes are used as dierent forwarding routes for dynamic failover. If the primary path goes down and the recursive route is removed from
the routing table, the seq redirect statement is ignored and the next statement in the list with a dierent route is used.
PBR Exceptions (Permit)
Use the command permit to create an exception to a redirect list. Exceptions are used when a forwarding decision should be based on the
routing table rather than a routing policy.
Dell Networking OS assigns the rst available sequence number to a rule congured without a sequence number and inserts the rule into
the PBR CAM region next to the existing entries. Since the order of rules is important, ensure that you congure any necessary sequence
numbers.
The permit statement is never applied because the redirect list covers all source and destination IP addresses.
Ineective PBR Exception due to Low Sequence Number
ip redirect-list rcl0
seq 5 redirect 2.2.2.2 ip any any
seq 10 permit ip host 3.3.3.3 any
To ensure that the permit statement or PBR exception is eective, use a lower sequence number, as shown below:
ip redirect-list rcl0
seq 10 permit ip host 3.3.3.3 any
seq 15 redirect 2.2.2.2 ip any any
Apply a Redirect-list to an Interface using a Redirect-group
IP redirect lists are supported on physical interfaces as well as VLAN and port-channel interfaces.
NOTE
: When you apply a redirect-list on a port-channel, when trac is redirected to the next hop and the destination port-
channel is shut down, the trac is dropped.
Use the following command inINTERFACE mode to apply a redirect list to an interface. Multiple redirect-lists can be applied to a redirect-
group. It is also possible to create two or more redirect-groups on one interface for backup purposes.
Table 68. Applying a Redirect-list to an Interface
Command Syntax Command Mode Purpose
ip redirect-group redirect-list-name INTERFACE Apply a redirect list (policy-based routing) to an interface.
redirect-list-name is the name of a redirect list to apply to
this interface.
FORMAT: up to 16 characters
Delete the redirect list from this interface with the [no] ip redirect-group command.
In this example, the list “xyz” is applied to the tenGigabitEthernet 2/1 interface.
Applying a Redirect-list to an Interface Example:
Dell(conf-if-te-1/1/1)#ip redirect-group test
Dell(conf-if-te-1/1/1)#ip redirect-group xyz
Dell(conf-if-te-1/1/1)#show config
!
Policy-based Routing (PBR)
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