SR804N Cable Modem User Manual
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Figure 25 RIP Setup
RIP (Router Information Protocol) is used in WAN networks to identify and use the
best known and quickest route to given destination addresses to help reduce network
congestion and delays.
NOTE: RIP messaging will only be sent upstream when running in Static IP
Addressing mode on the Basic
– Setup page. You must enable Static IP Addressing
and the set the Wan IP network information! RIP is normally a function that is tightly
controlled via the ISP. RIP Authentication Keys and IDs are normally held as secret
information from the end user to prevent unauthorized RIP settings.
RIP is a protocol that requires negotiation from both sides of the network (i.e. CMRG
and CMTS). The ISP would normally set this up because of their knowledge of their
CMTS settings to match the configuration in the CMRG.
To enable the CMRG to perform RIP, do the following (this example uses BRCMV2 as
the RIP Authentication Key and 1 as the Key ID):
1.) To turn on RIP MD5 Authentication, check the “Enable” box.
2.) To specify a RIP MD5 Authentication Key String, type “BRCMV2” for this example.
key name = a string value to match CMTS key name value
3.) To specify a RIP MD5 Auth Key ID, type “1”
key number = a number to match the CMTS key number value
4.) To change the RIP annoucement interval, type in a number in seconds.reporting
interval by default = 30 seconds
5.) To specify a RIP unicast destination IP address, enter the IP address and subnet
mask.
To enable the CMTS for RIPv2 with MD-5 authentication (Cisco uBR example shown
below):
1.) The following steps go through configuring RIPv2 for a Cisco CMTS. The network
number used in this configuration will vary from network to network so use the
network number that matches your set-up.
7223#configure terminal
7223(config)#key chain ubr
7223(config-keychain)#key 1
