Compatible Systems 5.4 manual Hello Timer

Models: 5.4

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Chapter 5 - DECnet Routing & Bridging

 

 

Hello Timer

DECnet hello messages tell end nodes which routers are available to route packets. This parameter tells the router how frequently it should send hello messages on this interface.

The Hello Timer value is also inserted into the hello messages themselves. Once an end node has received a hello message from a router, it begins to track the availability of that router. If an end node does not hear an additional hello message within 3 timer periods, it assumes that this router is no longer available.

The default value for this parameter is 30 seconds. The maximum value is 8191 seconds (approximately 2 hours and 15 minutes).

ϖNote: For dial-on-demand links, this parameter should be set to the longest period practical, since the router will dial the remote end each time one of these packets is sent.

Routing Timer

DECnet routing messages are exchanged between routers and contain routing table information including node numbers, hello timer values, hop counts and costs. This parameter tells the router how frequently it should send routing messages on this interface.

The default value for this parameter is 120 seconds. The maximum value is 8191 seconds (approximately 2 hours and 15 minutes).

ϖNote: For dial-on-demand links, this parameter should be set to the longest period practical, since the router will dial the remote end each time one of these packets is sent.

Page 102
Image 102
Compatible Systems 5.4 manual Hello Timer