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New Member

"INPUT QUEUE HIGH MARK " EIGRP message in sh ip eigrp traffic WHAT is it?


When i get : show ip eigrp traffic

i see following

IP-EIGRP Traffic Statistics for process 1

Hellos sent/received: 3854331/59258104

Updates sent/received: 12763/56946

Queries sent/received: 5647/28609

Replies sent/received: 25445/25335

Acks sent/received: 75350/72437

Input queue high water mark 200, 21 drops

SIA-Queries sent/received: 164/51

SIA-Replies sent/received: 16/13

I could not get information about row "INPUT QUEUE HIGH WATER"

What does it mean ?

And how can i reset counters?

Is there mib value for this one?

Thanks advance for help


Re: "INPUT QUEUE HIGH MARK " EIGRP message in sh ip eigrp traffi

High water mark usually refers to a queue or memory threshold (eg in DLSW if the TCP queue length of the connection between the two routers reaches the high-water mark, the routers sends Receiver-Not-Ready (RNR) messages). So from this I am assuming the input queue means EIGRP's queue (for hellos, queries, acks etc) is set to 200, and it was exceeded resulting in 21 packet drops.

There are about 170 clear commands but the only one I can think of that could work is clear ip eigr neighbor (which you don't want to do) or clear ip tcp stat (but I don't think it will work as EIGRP doesn't use tcp).

As for MIBs, do an snmpwalk on the router to see all available MIBs.

Hope it helped.


New Member

Re: "INPUT QUEUE HIGH MARK " EIGRP message in sh ip eigrp traffi

Steve ! Thanks for answer!

But unfortunately

It doesnt help

clear ip eigrp neigh doesnt reset line in sh ip eigrp traffic.

I tried to do "clear counters" but its work only with counters in "sh int command"

Anyway thanks

I think it will be reset only during relod router

New Member

Re: "INPUT QUEUE HIGH MARK " EIGRP message in sh ip eigrp traffi

water mark

A processing limit value used in flow control. Each queue has a high-water mark and a low-water mark. The value of the high-water mark indicates the highest total number of bytes acceptable on the queue's message list. When the number of bytes on the message list reaches the high-water mark, the flow control mechanism blocks the preceding queue from sending messages to the queue that has exceeded its high-water mark. When the number of bytes is reduced to the low-water mark through service procedure processing, flow control unblocks the preceding queue.

The input queues high watermark parameter above gives the highest number of enqueued EIGRP packets that were encountered, and how many packets have been dropped because the EIGRP process could not handle them in time.

Thanks Dmitiy Burgimenko and Andrey Melchukov

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