ZyXEL Communications Prestige 645R - Manual (Page 155)

Prestige 645 ADSL Internet Access Router
12-2 IP Policy Routing
are met. The criteria includes 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, telnet for example, tend to
have short packets, while bulk traffic, file transfer for example, tends to have large packets.
The actions that can be taken include:
• routing the packet to a different gateway (and hence the outgoing interface).
• setting the TOS and precedence fields in the IP header.
IPPR follows the existing packet filtering facility of RAS in style and in implementation. The policies are
divided into sets, where related policies are grouped together. A user 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 six
policies in each set.
12.4 IP Routing Policy Setup
Menu 25 shows all the policies defined.
Figure 12-1 IP Routing Policy Setup
Menu 25 - IP Routing Policy Setup
Policy Policy
Set # Name Set # Name
------ ----------------- ------ -----------------
1 test 7 _______________
2 _______________ 8 _______________
3 _______________ 9 _______________
4 _______________ 10 _______________
5 _______________ 11 _______________
6 _______________ 12 _______________
Enter Policy Set Number to Configure= 0
Edit Name= N/A
Press ENTER to Confirm or ESC to Cancel: