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GRE/IPSec Tunnel congestion (output drops)

hburgos
Level 1
Level 1

‎04-18-2007 09:41 AM - edited ‎02-21-2020 01:29 AM

Hello All

Any idea what can be causing tunnel interface output drops? All my p-2-p tunnels are reporting output drops.

My remote sites each contain three T1's (PPP Multilink setup) My serial interface;s are not reporting output drops, my Multilink interfaces are reporting perhaps 5% drops compared to the tunnel interface.

Central site contains a DS3 (Carved 18Mbps)

I just cleared the counters and will be monitoring the results.

Thanks

Hank

0 Helpful
9 Replies 9

b.speltz
Level 4
Level 4

‎04-24-2007 08:26 AM

One of the reasons for the increase of dropped packets is that the input rate to the serial interface exceeds the bandwidth available on the serial link

0 Helpful

Not applicable

‎06-04-2007 12:04 PM

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Not applicable

‎06-04-2007 12:05 PM

0 Helpful

Not applicable

‎06-04-2007 12:05 PM

0 Helpful

Not applicable

‎06-04-2007 12:05 PM

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Not applicable

‎06-04-2007 12:05 PM

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Not applicable

‎06-04-2007 12:05 PM

0 Helpful

Ryan Douglas
Level 1
Level 1

‎06-09-2007 04:43 PM

Also check your MTU. You could have fragmentation occuring due to 24byte GRE overhead.

0 Helpful

rseiler
Level 3
Level 3

‎06-15-2007 11:05 AM

You are traffic-shaping on the DS3 or are you sending 45Mb to the 18Mb circuit?

0 Helpful
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