
Configuring IP, ARP, RARP, RIP, and OSPF Services
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308627-14.20 Rev 00
Parameter: Holddown Timer
Path: Configuration Manager > Protocols > IP > RIP Interfaces
Default: 90 seconds; 3 hours for dial-optimized routing
Options: 15 seconds to 259,200 seconds (72 hours); 3 hours to 3,628,800 seconds
(6 weeks) for dial-optimized routing
Function: Specifies the time period that unusable routes will be advertised through this
interface after the route has become invalid. This parameter affects how long a
route remains in the routing table after the route has become unusable. Note
that if a route to a destination becomes unusable, the holddown value does not
affect the router’s ability to learn new routes to the same destination.
Instructions: Nortel Networks recommends a timeout value of the broadcast time
multiplied by 3. Enter a time in 5-second increments.
MIB Object ID: 1.3.6.1.4.1.18.3.5.3.2.2.2.1.14
Parameter: RIP Mode
Path: Configuration Manager > Protocols > IP > RIP Interfaces
Default: RIP1
Options: RIP1
|
RIP2
|
RIP2 Aggregate
Function: Specifies which mode of RIP to run.
Instructions: If you specify RIP1, RIP generates RIP Version 1 packets only. The
destination IP address is the directed broadcast address, and the destination
MAC address is the broadcast address. Select RIP1 if any of the listening
devices are RIP Version 1-only devices. If you select RIP2, RIP generates
RIP Version 2 updates with the destination MAC address set to the multicast
address of 224.0.0.9 specified in the RIP Version 2 RFC. The destination
MAC address on Ethernet and FDDI networks will be the corresponding
multicast address. On all other media, the destination MAC address will be
the broadcast address. RIP does not aggregate subnet information in the
updates. If you select RIP2 Aggregate, RIP generates Version 2 updates but
aggregates subnet information in the manner of RIP Version 1. Nortel
Networks recommends using RIP2 mode, with or without aggregation, rather
than RIP1 mode, especially if unnumbered point-to-point links or
variable-length subnets are used.
MIB Object ID: 1.3.6.1.4.1.18.3.5.3.2.2.2.1.15
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