Cabletron Systems SmartSwitch - Manual (Page 209)

SmartSwitch Router User Reference Manual 209
Chapter 13
IP Policy-Based
Forwarding
Configuration
Guide
Overview
You can configure the SSR to route IP packets according to policies that you define. IP-
policy-based routing allows network managers to engineer traffic to make the most
efficent use of their network resources.
IP policies forward packets based on layer-3 or layer-4 IP header information. You can
define IP policies to route packets to a set of next-hop IP addresses based on any
combination the following IP header fields:
• IP protocol
• Source IP address
• Destination IP address
• Source Socket
• Destination Socket
• Type of service
For example, you can set up an IP policy to send packets originating from a certain
network through a firewall, while letting other packets bypass the firewall. Using IP
policies, sites that have multiple Internet service providers can cause user groups to use