[c-nsp] PXE not working on Cat2948

[E. Versaevel]

Sounds like spanning-tree port enable delay, issue try using spanning-tree portfast on the PXE client port


Op 8-1-2010 14:04, Jens Neu schreef:
> Der all,
> 
> I have a Catalyst 2948G which seems to keep PXE boot from working 
> properly. This one Cat2948 is the only Layer 2 device between the DHCP/PXE 
> boot server and the PXE client - both are directly connected and share a 
> /24. PXE boot is not working at all, and DHCP is unbearably slow, for no 
> apparent reason. Both PXE Server and Client(s) are various IBM xSeries 
> using the onboard GBit interfaces.
> Now the fun stuff: when I put a second Layer 2 device between the Cat 2948 
> and the PXE client, it is magically working.
> Means: PXE Server -> Cat 2948 -> "some cheap Netgear Office switch" -> PXE 
> Client == works. In fact, any additional Layer 2 device that appears 
> between PXE Client and the Cat 2948 scares the problem away.
> 
> Anyone seen this before? Any hints where to start looking? The switch 
> looks as follows:
> 
> WS-C2948 Software, Version NmpSW: 8.4(11)GLX
> Copyright (c) 1995-2006 by Cisco Systems, Inc.
> NMP S/W compiled on Apr 27 2006, 12:46:44
> GSP S/W compiled on Apr 27 2006, 11:47:52
> 
> System Bootstrap Version: 6.1(4)
> 
> Hardware Version: 2.5  Model: WS-C2948  Serial #: JAE061500JB
> 
> Mod Port Model              Serial #              Versions
> --- ---- ------------------ -------------------- 
> ---------------------------------
> 1   0    WS-X2948           JAE061500JB          Hw : 2.5
>                                                  Gsp: 8.4(11.0)
>                                                  Nmp: 8.4(11)GLX
> 2   50   WS-C2948G          JAE061500JB          Hw : 2.5
> 
>        DRAM                    FLASH                   NVRAM
> Module Total   Used    Free    Total   Used    Free    Total Used  Free
> ------ ------- ------- ------- ------- ------- ------- ----- ----- -----
> 1       65536K  37349K  28187K  12288K  10648K   1640K  480K   85K  395K
> 
> best regards!
> 
> Jens Neu
> 
> Phone: +49 (0) 30 68905-2412
> Mail: jens.neu at biotronik.de
> 
> 
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Erik Versaevel