Pbr Exceptions (Permit) - Dell Z9000 Configuration Manual

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 first available sequence number to a rule configured 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 configure any necessary sequence numbers.
The permit statement is never applied because the redirect list covers all source and destination IP
addresses.
Ineffective 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 effective, 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 traffic is redirected to the next hop
and the destination port-channel is shut down, the traffic is dropped. However, on the S-Series, the
traffic redirected to the destination port-channel is sometimes switched.
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.
Command Syntax
ip redirect-group redirect-list-name
In this example, the list "xyz" is applied to the tenGigabitEthernet 4/0 interface.
592
Command Mode Purpose
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.
Policy-based Routing (PBR)