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03.19.2007 at 04:44AM PDT, ID: 22457686
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7.2

ICMP Redirects on Network

Asked by RPPreacher in Networking Protocols, Virtual Private Networking (VPN), Internet Control Message Protocol (ICMP)

Tags: , ,

We have several remote offices connected to the HQ via PIX to PIX L2L Ipsec tunnels.

The remote offices are reporting performance issues.  For diagnostics, I am using hrping.

During pings, I am getting a large number of ICMP Redirects

C:\Documents and Settings\hannibal>hrping pvl
This is hrPING v2.34 by cFos Software GmbH -- http://www.cfos.de

Pinging pvl [10.1.4.1]
with 64 bytes data (92 bytes IP):

Reply from 10.1.4.1: seq=0000 time=21.667ms TTL=128 ID=a97d
Reply from 10.1.4.1: seq=0001 time=21.583ms TTL=128 ID=a97f
Reply from 10.1.13.199: redirect for network; seq=0002 time=0.460ms
Reply from 10.1.4.1: seq=0003 time=21.449ms TTL=128 ID=a981

Sometimes redirects represent 50-70% of results.

The network is pretty simple.  10.1.13.199 is the gateway L3 switch (Cisco 3550-48 L3).  It's default gateway is a PIX 506e (6.3(5)).  The PIX does an IPSec VPN.  The outside of the PIX connects with a 2611, connected to a T1.

No dual gateways or anything that could be causing ICMP Redirects.

Any ideas why I am seeing this?Start Free Trial
[+][-]03.26.2007 at 11:34PM PDT, ID: 18798169

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[+][-]03.27.2007 at 03:20AM PDT, ID: 18798744

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[+][-]03.28.2007 at 04:04PM PDT, ID: 18812618

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About this solution

Zones: Networking Protocols, Virtual Private Networking (VPN), Internet Control Message Protocol (ICMP)
Tags: hrping, icmp, redirect
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Solution Provided By: jaredcall
Participating Experts: 3
Solution Grade: B
 
 
[+][-]04.02.2007 at 09:13AM PDT, ID: 18837457

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[+][-]04.02.2007 at 09:59AM PDT, ID: 18837810

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