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Old 10-17-2011, 03:06 AM
grossmannma grossmannma is offline
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Join Date: Feb 2011
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Default Limit of ERS8600

Dear all,

Has anyone experience with limits of the ERS8600 switch?
8692SF slot 5/6
8630GBR slot 2,3,4
8648GTR slot 8
SW version

60MLTs and 4 SMLTs
160 VLANs
15000 MAC recordings
300 OSPF routes
VLACP and SLPP on every necessary port

No mulicast, RIP, BGP, no ACLs......

Our problem:
In this state - described above - switch runs proper.

Now I have added three VLANs (197, 1971, 1972) and the CPU and buffer utilization goes up to 100% - after 30 minutes.
I have deleted this 3 VLANs and it lasts 30 minutes, till switch calms down.
I have done it a second time for verification and it happens the same.
It seems, the addition of the vlans and an IP address has no effect.
But if I add this VLANs to OSPF and RSMLT CPU and buffer utilization raises.

No log messages.
Checked routes - proper.
Case is open 1-2263927122, but no idea.

Are we running in a limit?

Best regards,
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Old 10-18-2011, 03:55 PM
mayler mayler is offline
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Join Date: Jul 2011
Posts: 23
mayler has 10 reputation points

no issues, similar configuration. RSMLT meaning you have IST with another 8600, same configuration correct? So when you say you add the VLANs to the RSMLT, you are referring to the IST Trunk.

Care to provide a show tech on each of the switches? Or just the relevant config. Also a show ip rsmlt info

Have you review the release notes for or (known issues).

I'm curious and would like to help out.
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Old 10-19-2011, 01:01 PM
gross10 gross10 is offline
Join Date: Oct 2011
Posts: 3
gross10 has 10 reputation points

Hello Mayler,

Correct identic switch on remote side - support has found no relevant entries in show tech or config.
CPU and buffer utilization goes up also on second switch, but it seems to be an impact from the "problem" switch.

Best regards,
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