User`s manual

P-660 Series Support Notes

Cost Savings- IPPR allows organizations to distribute interactive traffic on high-

bandwidth, high-cost path while using low-path for batch traffic.

Load Sharing- Network administrators can use IPPR to distribute traffic among

multiple paths.

• How does the IPPR work?

A policy defines the matching criteria and the action to take when a packet meets the

criteria. The action is taken only when all the criteria are met. The criteria include the

source address and port, IP protocol (ICMP, UDP, TCP,etc), destination address and

port, TOS and precedence (fields in the IP header) and length. The inclusion of

length criterion is to differentiate between interactive and bulk traffic. Interactive

applications, e.g., Telnet, tend to have short packets, while bulk traffic, e.g., file

transfer, tends to have large packets.

The actions that can be taken include routing the packet to a different gateway (and

hence the outgoing interface) and the TOS and precedence fields in the IP header.

IPPR follows the existing packet filtering facility of ZyNOS in style and in

implementation. The policies are divided into sets, where related policies are grouped

together. A use defines the policies before applying them to an interface or a remote

node, in the same fashion as the filters. There are 12 policy sets with 6 policies in

each set.

• Setup the IP Policy Routing

1. Create a routing policy set in menu 25

Menu 25 - IP Routing Policy Setup

Policy Policy

Set # Name Set # Name

------ ----------------- ------ -----------------

1 _______________ 7 _______________

2 _______________ 8 _______________

3 _______________ 9 _______________

4 _______________ 10 _______________

5 _______________ 11 _______________

6 _______________ 12 _______________

Enter Policy Set Number to Configure= 1

Edit Name= policy1

Press ENTER to Confirm or ESC to Cancel: