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Re: Cisco IOS 12.0(4)T multicast bug that causes routers to crash


Chronological Thread 
  • From: Hugh LaMaster <>
  • To: Multicast WG Internet2 <>
  • Subject: Re: Cisco IOS 12.0(4)T multicast bug that causes routers to crash
  • Date: Mon, 24 Jul 2000 16:12:05 -0700 (PDT)


On Mon, 24 Jul 2000, Bill Nickless wrote:

> At 11:36 AM 7/24/2000 -0400, Alan Crosswell wrote:
> >We've just had all our IOS 12.0(4)T routers crash simultaneously with
> >this bug: CSCdm86165. This happened Friday around 4:45pm EDT and
> >again this morning around 9:54am. The fix is in 12.0(7)T and higher.
> >We have 12.1(1a) on our I2 router and it did not crash.
> >
> >/a
>
> Based on our experiences here I highly recommend moving your multicast
> routers to 12.1(3) as soon as practical. 12.1(3) solved a number of
> problems with one of our border routers, a 7513, having to do with gigabit
> Ethernet and ATM. It also seems to support the RSP8 properly.
>
> The good news about 12.1(3) is that it's a Limited Deployment release, on
> track to be certified for General Deployment. 12.x(y)T images are Early
> Deployment (ED) Releases which offer new feature, platform or interface
> support. All the necessary multicast protocols are in 12.1(3).

An alternative is 12.0(x)S. We have run or are currently running
12.0(10)S and 12.0(10.6)S operationally on GSR, 7500 (RSP4 and RSP8),
and 7200 (NPE-150, NPE-200, VXR-300), and are testing 12.0(11.6)S,
(so far on GSR and 7200), with no problems. On the 7500, RSP8 has
been supported for a while. Likewise, GE-IP. Things have generally
been quite stable for a while, since about 12.0(8)S or so. My
experience with 12.0()S has been very good, although it doesn't
have some QoS features that are in 12.1.

> Sadly 12.1(3) is not available for the 6509-MSFC, however.

Obviously 12.0(x)S is not available for 6509-MSFC either.
The selection of images available for the 6509-MSFC still
seems to be quite limited, unfortunately.

However, 12.1(1)E2 is available for the 6509-MSFC, and seems
to have most of the latest code. Did any 6509-MSFC's
running it crash? And, while we are on the subject,
how many folks out there are using this combination as a
border router (with BGP, MBGP, MSDP, PIM-SM, the usual stuff)?
Any comments?


Additions/correction/refutations welcome.


--
Hugh LaMaster, M/S 233-21, Email:

NASA Ames Research Center Or:

Moffett Field, CA 94035-1000 Or:

Phone: 650/604-1056 Disc: Unofficial, personal *opinion*.





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