[c-nsp] NCS-5001 - MPLS L3VPN Issue

Gert Doering gert at greenie.muc.de
Tue Mar 8 02:49:25 EST 2016


On Mon, Mar 07, 2016 at 10:05:03PM +0000, James Bensley wrote:
> I have just today bottomed out another IOS-XR bug with the help of TAC
> and a BGP developer from China. An ASR9001 running BGP PIC and was
> originally 4.3.4 default which eventually received some custom SMUs to
> fix a bug when a line card was added, and then later patched up to
> SP10 to fix further issues had the CPU stuck between 50-60%, 24x7.
> A BGP SMU for a BGP DDTS fixing multiple BGP bugs which was applied to
> the router when one installs any 4.3.4 service pack from SP3 through
> to SP10 included a bug-fix for BGP PIC, but this introduced a bug for
> us. PIC processes a best-external update indefinitely. The issue
> persists almost immediately after restarting the BPG process (as soon
> as an update comes through for a backup-path, which with the full
> Internet table takes no time at all basically) and immediately post
> reboot (for the same reason).
> Fucking IOS-XR.

I'm not exactly sure how that relates to patch ordering and SMUs, tbh - 
this is just a bug (and an annoying one, and testing should have caught
it before it was ever shipped) - but "slapping on 4.3.4SP10, instead
of patching" would have brought it as well, no?

USENET is *not* the non-clickable part of WWW!
Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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