ZyXEL Communications 200 Series - Manual (Page 287)

ZyWALL USG 100/200 Series User’s Guide
287
C
H A P T E R
1 3
Routing Protocols
13.1 Routing Protocols Overview
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
Section 5.5 on page 121 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.
13.1.1 What You Can Do in the RIP and OSPF Screens
• Use the RIP screen (see Section 13.2 on page 288 ) to configure the ZyWALL to use RIP
to receive and/or send routing information.
• Use the OSPF screen (see Section 13.3 on page 289 ) to configure general OSPF settings
and manage OSPF areas.
• Use the OSPF Area Add/Edit screen (see Section 13.3.2 on page 293 ) to create or edit an
OSPF area.
13.1.2 What You Need to Know About Routing Protocols
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.
Finding Out More
See Section 13.4 on page 295 for background information on routing protocols.
Table 93 RIP vs. OSPF
RIP 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