User`s guide

P-793H v2 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

Rules can be edited in SMT menu 25.

Suppose we‟d like to edit the rule like this:

Policy Set Name=Test

Active= Yes

Criteria:

IP Protocol = 6

Type of Service= Don't Care Packet length= 0

Precedence = Don't Care Len Comp= N/A

Source:

addr start= 192.168.1.2 end= 192.168.1.20

port start= 0 end= N/A

Destination:

addr start= 0.0.0.0 end= N/A

port start= 80 end= 80

Action= Matched

Gateway addr = 192.168.1.254 Log= No