ZyXEL Communications 200 Series User Manual

ZyWALL USG 100/200 Series User’s Guide

Routing protocols give the ZyWALL routing information about the network from other 
routers. The ZyWALL stores this routing information in the routing table it uses to make 
routing decisions. In turn, the ZyWALL can also use routing protocols to propagate routing 
information to other routers. See 

 for related information on the RIP 

and OSPF screens.

Routing protocols are usually only used in networks using multiple routers like campuses or 
large enterprises.

• Use  the RIP screen (see 

) to configure the ZyWALL to use RIP 

to receive and/or send routing information. 

• Use the OSPF screen (see 

) to configure general OSPF settings 

and manage OSPF areas. 

• Use  the  OSPF Area Add/Edit screen (see 

) to create or edit an 

OSPF area. 

The ZyWALL supports two standards, RIP and OSPF, for routing protocols. RIP and OSPF 
are compared here and discussed further in the rest of the chapter.

See 

 for background information on routing protocols.

Table 93   RIP vs. OSPF

Network Size

Small (with up to 15 routers)

Large

Metric

Hop count

Bandwidth, hop count, throughput, round 
trip time and reliability. 

Convergence

Slow

Fast