3Com Switch 7700 Configuration Manual page 109

Perform the following configuration in VLAN interface view
Table 15 Setting RIP-2 Packet Authentication
Operation
Configure RIP-2 simple authentication key
Configure RIP-2 MD5 authentication with
packet type following RFC 1723
Configure RIP-2 MD5 authentication with
packet type following RFC 2082
Set the packet format type of RIP-2 MD5
authentication
Cancel authentication of RIP-2 packet
The usual packet format follows RFC1723 and nonstandard follows RFC2082.
Configuring Split Horizon
Split horizon means that the route received through an interface will not be sent
through this interface again. The split horizon algorithm can reduce the
generation of routing loops, but in some special cases, split horizon must be
disabled to obtain correct advertising at the cost of efficiency. Disabling split
horizon has no effect on the P2P connected links but is applicable on the Ethernet.
Perform the following configuration in VLAN interface view.
Table 16 Configuring Split Horizon
Operation
Enable split horizon
Disable split horizon
By default, split horizon of the interface is enabled.
Enabling RIP to Import Routes of Other Protocols
RIP allows users to import the route information of other protocols into the
routing table.
RIP can import direct, static, OSPF, BGP, and IS-IS routes.
BGP and IS-IS require the extended version of the software on the Switch 7700.
Perform the following configurations in RIP view.
Table 17 RIP to Import Routes of Other Protocols
Enabling
Operation
Enable RIP to import routes of other protocols import-route protocol [ cost value ]
Disable route imports from other protocols
By default, RIP does not import the route information of other protocols.
Command
rip authentication-mode simple
password-string
rip authentication-mode { simple password
| md5 { usual key-string | nonstandard
key-string key-id } }
rip authentication-mode { simple password
| md5 { usual key-string | nonstandard
key-string key-id } }
rip authentication-mode { simple password
| md5 { usual key-string | nonstandard
key-string key-id } }
undo rip authentication-mode
Command
rip split-horizon
undo rip split-horizon
Command
[route-policy route-policy-name ]
undo import-route protocol
RIP 101