Reference Guide

Implementing Policy-based Routing with Dell
Networking OS
● Non-contiguous bitmasks for PBR
● Hot-Lock PBR
Non-contiguous bitmasks for PBR
Non-contiguous bitmasks for PBR allows more granular and flexible control over routing policies. Network addresses that are in
the middle of a subnet can be included or excluded. Specific bitmasks can be entered using the dotted decimal format.
Non-contiguous bitmask example
Dell#show ip redirect-list
IP redirect-list rcl0:
Defined as:
seq 5 permit ip 200.200.200.200 200.200.200.200 199.199.199.199 199.199.199.199
seq 10 redirect 1.1.1.2 tcp 234.224.234.234 255.234.234.234 222.222.222.222/24
seq 40 ack, Next-hop reachable(via Te 8/1)
Applied interfaces:
Te 8/0
Hot-Lock PBR
Ingress and egress Hot Lock PBR allow you to add or delete new rules into an existing policy (already written into CAM) without
disruption to traffic flow. Existing entries in CAM are adjusted to accommodate the new entries. Hot Lock PBR is enabled by
default.
Configuration Task List for Policy-based Routing
To enable the PBR:
● Create a Redirect List
● Create a Rule for a Redirect-list
● Create a Track-id list. For complete tracking information, refer to Object Tracking chapter.
● Apply a Redirect-list to an Interface using a Redirect-group.
Create a Redirect List
Use the following command in CONFIGURATION mode:
Command Syntax
Command Mode Purpose
ip redirect-list redirect-list-name CONFIGURATION Create a redirect list by entering the list name.
Format: 16 characters
Delete the redirect list with the no ip redirect-list command.
The following example creates a redirect list by the name of “xyz.”
Dell(conf)#ip redirect-list ?
WORD Redirect-list name (max 16 chars)
Dell(conf)#ip redirect-list xyz
Create a Rule for a Redirect-list
Use the following command in CONFIGURATION REDIRECT-LIST mode to set the rules for the redirect list. You can enter
the command multiple times and create a sequence of redirect rules. Use the seq nn redirect version of the command to
organize your rules.
Command Syntax
Command Mode Purpose
Policy-based Routing (PBR) 567