Re: [c-nsp] Strange problem with Cat6500 freeze
Not exactly the same but we had an 'automatic' reboot on a Sup720 and Sup32
during a broadcast storm after upgrading tot SXI4a. Before the upgrade the
machine kept running (unresponsive but running) until the cause of the
broadcast storm was removed.
Something seems to have changed in SXI4a
Wim Holemans
-Original Message-
From: cisco-nsp-boun...@puck.nether.net
[mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Jens S Andersen
Sent: maandag 13 december 2010 19:49
To: Robert Hass
Cc: cisco-nsp@puck.nether.net
Subject: Re: [c-nsp] Strange problem with Cat6500 freeze
Hi
We har the exact same problem with 2 6503E/Sup32 routers after upgrading to
SXI4a.
We downgraded to SXI3, and the problem went away.
Maybe it's a SXI4a 'feature'.
-Jens
Hi
I have network where core-devices are Cisco Catalyst 6506-E with
Sup32/PFC3B. I last month We had two times problem. One time first 6500
'freezes' and second time second 6500 'freezes' Freezes means machine was
powered up, alarm was present (diode on supervisor), console wasn't
responding at all, freeze 6500 created a lot of loops on all VLANs inside
network (%SW_MATM-4-MACFLAP_NOTIF: Host .. in vlan XX is
flapping between port XX and port XX), all ports connected to 'freeze' 6500
was UP, LACP for PortChannels went down. Hard reboot (power off + power on)
helps both times. There wasn.t any crashdump in
flash/bootflash/sup-bootdisk/disk. Most problem was caused by loop created
by freeze 6500 - as all network was overloaded. How I could prevent these
issue in future ? Maybe storm-control for broadcasts ? Did anybody
occurred similar problem with 6500 ? After investigate both freezes was
probably caused by radom disabled/enabled NetFlow ('ip flow ingress') on few
SVIs.
Some facts more about both 6500 configurations:
- Both running 12.2(33)SXI4a IOS. Upgrade was done 1 month ago.
- Before machines was running 12.2(33)SXH4 never occurred similar problem
- eBGP (230k prefixes), 3-4 full table BGP peers + iBGP (20 peers rr-clients)
- IS-IS
- A little MLS QOS (policing) - 1-2 service-polcies on SVIs
- Control Plane Policing implemented
- Sometimes netflow v5 exporting from SVI
- Load around 40% (show catalyst6000) + 1.5Mpps (sh platf hardw capa pfc)
- Dual PSs
- Only ports GE on Sup-32 heavy used
- WS-X6408A-GBIC linecards but used only 1-2 ports with a little load
(~50-200Mb)
- ~300 VLANs
- ~50 SVIs
Robert
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Jens S Andersen Email: j...@adm.aau.dk
Aalborg University Telf: 9940 9464
Selma Lagerlöfs Vej 300, 4.2.59 Fax:9940 7593
9220 Aalborg
Denmark
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Re: [c-nsp] Strange problem with Cat6500 freeze
On Tue, Dec 14, 2010 at 9:34 AM, Holemans Wim wim.holem...@ua.ac.be wrote: Not exactly the same but we had an 'automatic' reboot on a Sup720 and Sup32 during a broadcast storm after upgrading tot SXI4a. Before the upgrade the machine kept running (unresponsive but running) until the cause of the broadcast storm was removed. Something seems to have changed in SXI4a We decided to go back to SXH release. But I'm sure that SXH4 is pretty stable in my experience. But good choice will be if we go to SXH8 release as some bugs was resolved from SXH4 release time. Can anyone confirm stability Sup32 config with SXH8 IOS ? Robert ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] Strange problem with Cat6500 freeze
On 14 December 2010 11:45, Robert Hass robh...@gmail.com wrote: We decided to go back to SXH release. But I'm sure that SXH4 is pretty stable in my experience. But good choice will be if we go to SXH8 release as some bugs was resolved from SXH4 release time. Can anyone confirm stability Sup32 config with SXH8 IOS ? Not quite, but for what it's worth, I can confirm SXH8 has been rock solid for us on both 3B/3BXL. I decided to chose it over SXI because we didn't need the VSS/SPA/6716 support which is mostly where SXI differs from SXH hardware-wise. -- Daniel Holme ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
[c-nsp] Strange problem with Cat6500 freeze
Hi
I have network where core-devices are Cisco Catalyst 6506-E with
Sup32/PFC3B. I last month We had two times problem. One time first 6500
'freezes' and second time second 6500 'freezes' Freezes means machine was
powered up, alarm was present (diode on supervisor), console wasn't
responding at all, freeze 6500 created a lot of loops on all VLANs inside
network (%SW_MATM-4-MACFLAP_NOTIF: Host .. in vlan XX is
flapping between port XX and port XX), all ports connected to 'freeze' 6500
was UP, LACP for PortChannels went down. Hard reboot (power off + power on)
helps both times. There wasn.t any crashdump in
flash/bootflash/sup-bootdisk/disk. Most problem was caused by loop created
by freeze 6500 - as all network was overloaded. How I could prevent these
issue in future ? Maybe storm-control for broadcasts ? Did anybody
occurred similar problem with 6500 ? After investigate both freezes was
probably caused by radom disabled/enabled NetFlow ('ip flow ingress') on few
SVIs.
Some facts more about both 6500 configurations:
- Both running 12.2(33)SXI4a IOS. Upgrade was done 1 month ago.
- Before machines was running 12.2(33)SXH4 never occurred similar problem
- eBGP (230k prefixes), 3-4 full table BGP peers + iBGP (20 peers rr-clients)
- IS-IS
- A little MLS QOS (policing) - 1-2 service-polcies on SVIs
- Control Plane Policing implemented
- Sometimes netflow v5 exporting from SVI
- Load around 40% (show catalyst6000) + 1.5Mpps (sh platf hardw capa pfc)
- Dual PSs
- Only ports GE on Sup-32 heavy used
- WS-X6408A-GBIC linecards but used only 1-2 ports with a little load
(~50-200Mb)
- ~300 VLANs
- ~50 SVIs
Robert
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Re: [c-nsp] Strange problem with Cat6500 freeze
Hi
We har the exact same problem with 2 6503E/Sup32 routers after upgrading to
SXI4a.
We downgraded to SXI3, and the problem went away.
Maybe it's a SXI4a 'feature'.
-Jens
Hi
I have network where core-devices are Cisco Catalyst 6506-E with
Sup32/PFC3B. I last month We had two times problem. One time first 6500
'freezes' and second time second 6500 'freezes' Freezes means machine was
powered up, alarm was present (diode on supervisor), console wasn't
responding at all, freeze 6500 created a lot of loops on all VLANs inside
network (%SW_MATM-4-MACFLAP_NOTIF: Host .. in vlan XX is
flapping between port XX and port XX), all ports connected to 'freeze' 6500
was UP, LACP for PortChannels went down. Hard reboot (power off + power on)
helps both times. There wasn.t any crashdump in
flash/bootflash/sup-bootdisk/disk. Most problem was caused by loop created
by freeze 6500 - as all network was overloaded. How I could prevent these
issue in future ? Maybe storm-control for broadcasts ? Did anybody
occurred similar problem with 6500 ? After investigate both freezes was
probably caused by radom disabled/enabled NetFlow ('ip flow ingress') on few
SVIs.
Some facts more about both 6500 configurations:
- Both running 12.2(33)SXI4a IOS. Upgrade was done 1 month ago.
- Before machines was running 12.2(33)SXH4 never occurred similar problem
- eBGP (230k prefixes), 3-4 full table BGP peers + iBGP (20 peers rr-clients)
- IS-IS
- A little MLS QOS (policing) - 1-2 service-polcies on SVIs
- Control Plane Policing implemented
- Sometimes netflow v5 exporting from SVI
- Load around 40% (show catalyst6000) + 1.5Mpps (sh platf hardw capa pfc)
- Dual PSs
- Only ports GE on Sup-32 heavy used
- WS-X6408A-GBIC linecards but used only 1-2 ports with a little load
(~50-200Mb)
- ~300 VLANs
- ~50 SVIs
Robert
___
cisco-nsp mailing list cisco-nsp@puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/
Jens S Andersen Email: j...@adm.aau.dk
Aalborg University Telf: 9940 9464
Selma Lagerlöfs Vej 300, 4.2.59 Fax:9940 7593
9220 Aalborg
Denmark
___
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