[c-nsp] 2950 Performance Problem

Wed Jul 28 04:55:27 EDT 2004

BTW, 12.1.19EA1 has a bunch of bugs:

DEFERRAL: 12.1(19)EA1 Platform Images
List Of Affected Platform(s):
CAT2940
CAT2950
CAT2950LRE
CAT2955
CAT2970
CAT3550
CAT3750

Reason for Deferral:

DDTS No(s):
CSCec89172
Headline: Memory leak in CDP process

Maintenance DDTS[These are defects that did not cause this advisory,
however fixes are included in the solution]:
CSCec17826
Headline: Some Catalyst switches cannot communicate through 10Mb fiber
convert
CSCec63661
Headline: ip phone resets on interface configured w/ user vlan dyn
access
CSCec67240
Headline: Add support for full duplex flowcontrol on CISCO575 and
CISCO576 CPE
CSCec69183
Headline: System reloads while configuring aggregate policer
CSCec72237
Headline: C2950-lre: Transmission Path Lockup
CSCec76670
Headline: OIF uptime resets every minute
CSCec76671
Headline: S,G entry timeout if the source traffic rate is low packets
per min
CSCec86127
Headline: Layer 2 loop due to changing native vlan to non-existing vlan
CSCec86601
Headline: High CPU utilization when ip default-network is configured
CSCec86621
Headline: High CPU utilization when ip default-network is configured
CSCec87974
Headline: ifXTable ifHCInOctets/ifHCOutOctets = 0 for GEC port-channel
CSCec89172
Headline: Memory leak in CDP process
CSCed00222
Headline: Fix SAA jitter problems
CSCed06621
Headline: HSRP virtual mac is not re-lerned dynamically.
CSCed10210
Headline: access-class on vty fails to secure vty after reboot
CSCed13138
Headline: PBR: 3550 high cpu if primary next-hop down

Jeff

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Joe Goldberg
Sent: Tuesday, July 27, 2004 11:53 PM
To: 'Reuben Farrelly'
Cc: cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] 2950 Performance Problem

That fixed it.  I went to 12.1.22EA1 and all is working normally now.  I
had gone to 12.1.19EA on TACs suggestion.  They told me the others were
too unstable, but they are working great for me.  12 hours pushing 60+
Mbps over my trunk.

Thanks to everyone for their advise and assistance.  I really do
appreciate it.

Joe

-----Original Message-----
From: Reuben Farrelly [mailto:reuben-cisco-nsp at reub.net]
Sent: Monday, July 26, 2004 7:51 PM
To: Joe Goldberg
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] 2950 Performance Problem

What version of code is running on the 2950 switch? I had atrocious
performance between two ports on the same VLAN on a 2950 with 12.1.13-EA
but an upgrade to 12.1.20-EA1a fixed it.  I know that's not quite your
problem but still..

Reuben

----- Original Message -----
From: "Joe Goldberg" <joseph at ezzi.net>
To: "'Joe Baidoo'" <Joe.Baidoo at FFastFill.com>; "'Sam Stickland'"
<sam_ml at spacething.org>
Cc: "'Ryan O'Connell'" <ryan at complicity.co.uk>;
<cisco-nsp at puck.nether.net>
Sent: Tuesday, July 27, 2004 2:48 AM
Subject: RE: [c-nsp] 2950 Performance Problem

> To the best of my knowledge, the 2950 only supports dot1q trunking.
There
> is no apparent option to set the trunk type as there is in the 3524
(unless
> I am missing something).
>
> The way you describe below is how I have my 3524's setup and they work
fine.
>
> Thanks,
> Joe
>
> -----Original Message-----
> From: Joe Baidoo [mailto:Joe.Baidoo at FFastFill.com]
> Sent: Monday, July 26, 2004 8:52 AM
> To: Sam Stickland; Joe Goldberg
> Cc: Ryan O'Connell; cisco-nsp at puck.nether.net
> Subject: RE: [c-nsp] 2950 Performance Problem
>
> Hi Joe,
>
> I thought i should mention this from your switch config below, you
haven't
> set the encapsulation type either ISL or dot1q. Check to ensure the
two
> switches have the same native vlan and its being allowed across the
two
> trunks. See the sript below it may be useful.
>
>  switchport trunk encapsulation dot1q
>  switchport trunk allowed vlan 400, etc ....
>  switchport mode trunk
>
> -----Original Message-----
> From: Sam Stickland [mailto:sam_ml at spacething.org]
> Sent: 26 July 2004 13:33
> To: Joe Goldberg
> Cc: 'Ryan O'Connell'; cisco-nsp at puck.nether.net
> Subject: RE: [c-nsp] 2950 Performance Problem
>
>
> What is the Cisco 6509 config on the other end of the trunk?
>
> S
>
> On Fri, 23 Jul 2004, Joe Goldberg wrote:
>
> >
> > Thanks for you response.  I have checked for errors on both end of
the
> line
> > and I am not seeing any.  The 6509 is set up as a simple dot1q
trunk,
> > nothing crazy or tricky.  I should mention though that the 6509 has
an
> MSFC2
> > in it that is doing all the VLAN routing.
> >
> > As for the pings, when the 2950 gets to its max load (at least in
the
> state
> > it is now) of 12Mbps I start to drop pings of any size both to the
switch
> > and to servers that hang off the switch.  The servers on the switch
drop
> > pings outbound also.
> >
> > Following your good idea, I tried putting two servers on the same
vlan
and
> > got very good performance between the two on the same switch.  This
would
> > definitely point to an issue in the trunk, but I am still at a loss
as
to
> > what that may be.
> >
> > Here is just a snippet of code so you can see what I am doing on the
2950:
> >
> > interface FastEthernet0/20
> >  switchport access vlan 618
> >  no ip address
> > !
> > interface FastEthernet0/21
> >  switchport access vlan 617
> >  no ip address
> > !
> > interface FastEthernet0/22
> >  switchport access vlan 616
> >  no ip address
> > !
> > interface FastEthernet0/23
> >  switchport access vlan 615
> >  no ip address
> > !
> > interface FastEthernet0/24
> >  switchport mode trunk
> >  no ip address
> >  duplex full
> >  speed 100
> >
> > Thanks again for you assistance.
> >
> > Joe

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