[nsp] weird gre tunnel...--follow up
haesu at towardex.com
Sat Sep 27 23:55:51 EDT 2003
An update on this issue:
Not only the immediate hop at the ends of GRE tunnel gets "skipped" on 12.0(25)S1, from time to time GRE tunnels randomly stop passing traffic. The workaround so far seems like deleting the tunnel and reconfiguring it to get the affected tunnel back online, which is kinda makeshift...
Any ideas/experiences/recommendations would be very appreciated. Thanks!!
On Sat, Sep 27, 2003 at 04:09:22PM -0400, Haesu wrote:
> I got a 7500 running IOS 12.0.25S1..
> It has GRE tunnel with some routes pointed to it..
> Before I installed IOS 12.0.25S1 (it had non-serviceprovider version before),
> whenever I traceroute to certain destination going thru the GRE tunnel, the router
> at the other end of the tunnel always shows up in traceroute, which is normal.
> For example:
> 1. my-7500-router
> 2. remote-router-on-the-other-end-of-the-tunnel
> 3. some-router
> 4. destination-host
> After I installed 12.0.25S1 on that 7500, now I am seeing somewhat weird problem..
> The hop 2, which is the remote router on the other end of the GRE tunnel no longer
> shows up in traceroute... It now looks like this:
> 1. my-7500-router
> 2. some-router
> 3. destination-host
> Any idea what is happening with the way GRE tunnels are behaving under 12.0.25S1?
> Is this a bug with the version I have or is there a special setting I have to use?
> The hop right after the tunnel being skipped in traceroute or other layer3 queries
> quite bothers me..
> Haesu C.
> TowardEX Technologies, Inc.
> Consulting, colocation, web hosting, network design and implementation
> http://www.towardex.com | haesu at towardex.com
> Cell: (978)394-2867 | Office: (978)263-3399 Ext. 174
> Fax: (978)263-0033 | POC: HAESU-ARIN
> cisco-nsp mailing list cisco-nsp at puck.nether.net
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TowardEX Technologies, Inc.
Consulting, colocation, web hosting, network design and implementation
http://www.towardex.com | haesu at towardex.com
Cell: (978)394-2867 | Office: (978)263-3399 Ext. 174
Fax: (978)263-0033 | POC: HAESU-ARIN
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