3com 4210 User Manual

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You cannot configure the next hop of a static route as the address of an 
interface on the local switch.

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You can configure different preferences or an identical preference for routes to 
the same destination for route backup or load sharing.

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The default route has both the destination and mask configured as 0.0.0.0. If 
the destination IP address of a packet does not match any entry in the routing 
table, the router will select the default route to forward the packet

RIP is a Distance-Vector (D-V) routing protocol. It advertises routing information in 
User Datagram Protocol (UDP) datagrams.

RIP uses a hop count, or a routing cost, as the metric to a destination. The hop 
count from a router to a directly connected network is 0, and that to a network 
which can be reached through another router is 1, and so on. To restrict the 
convergence time, RIP prescribes that a cost is an integer ranging from 0 and 15. A 
hop count equal to or exceeding 16 is defined as infinite; that is, the destination 
network or the host is unreachable. To improve performance and avoid routing 
loops, RIP supports split horizon. Besides, RIP can redistribute routes from other 
routing protocols.

Figure 27   Network diagram for RIP configuration

A small company requires a small office network where any two nodes can 
communicate with each other, and the network devices can automatically adapt 
to topology changes.

In this case, RIPv2 can enable communication between any two nodes on the 
network.

Device Interface 

IP 

address 

Device 

Interface 

IP 

address 

Switch A 

Vlan-int1 

110.11.2.1/24 

Switch B 

Vlan-int1 

110.11.2.2/24 

Vlan-int2 155.10.1.1/24 

Vlan-int3 196.38.165.1/24 

Switch C 

Vlan-int1 

110.11.2.3/24 

Vlan-int4 117.102.0.1/16 

Switch A

Switch B

Switch C

Vlan-int 2

Ethernet

Vlan-int 4

Vlan-int 3

Vlan-int 1

Switch 5500

Release V03.02.04 

All versions