3Com Switch 4800G 24-Port Configuration Manual page 268

268 C 27: RIP C
HAPTER ONFIGURATION
Enabling Source IP
Address Check on
Incoming RIP Updates
n
Configuring RIPv2
Message Authentication
Specifying a RIP
Neighbor
that all messages are trusty, you can disable zero field check to save CPU
resources.
Follow these steps to enable zero field check on incoming RIPv1 messages:
To do...
Enter system view
Enter RIP view
Enable zero field check on
received RIPv1 messages
You can enable source IP address check on incoming RIP updates.
For a message received on an Ethernet interface, RIP compares the source IP
address of the message with the IP address of the interface. If they are not in the
same network segment, RIP discards the message.
For a message received on a serial interface, RIP checks whether the source
address of the message is the IP address of the peer interface. If not, RIP discards
the message.
Follow these steps to enable source IP address check on incoming RIP updates:
To do...
Enter system view
Enter RIP view
Enable source IP address check on
incoming RIP messages
The source IP address check feature should be disabled if a RIP neighbor is not
directly connected.
RIPv2 supports two authentication modes: plain text and MD5.
In plain text authentication, the authentication information is sent with the RIP
message, which however cannot meet high security needs.
Follow these steps to configure RIPv2 message authentication:
To do...
Enter system view
Enter interface view
Configure RIPv2
authentication
Usually, RIP sends messages to broadcast or multicast addresses. On non broadcast
or multicast links, you need to manually specify RIP neighbors. If a specified
Use the command...
system-view
rip [ process-id ]
checkzero
Use the command...
system-view
rip [ process-id ]
validate-source-address
Use the command...
system-view
interface interface-type interface-number
rip authentication-mode { md5 { rfc2082
key-string key-id | rfc2453 key-string } |
simple password }
Remarks
--
--
Optional
Enabled by default
Remarks
--
--
Optional
Enabled by default
Remarks
--
--
Required