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Which switch can do what we need?

 

 

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skeeve+cisconsp at eintellego

Apr 4, 2012, 10:25 PM

Post #1 of 4 (1042 views)
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Which switch can do what we need?

Hey all,

I have a customer trying to setup a solution for some hosting.

They want to have a dozen or so VLANs with thousands of secondary subnets
across these VLANs all configured with HSRP.

Initially they are testing with Cisco 3750's and they are having problems:

Apr 5 11:48:26.484 AEST: %SYS-2-MALLOCFAIL: Memory allocation of 395648
bytes failed from 0x1164560, alignment 0
Pool: Processor Free: 1212608 Cause: Memory fragmentation
Alternate Pool: None Free: 0 Cause: No Alternate pool
-Process= "hulc running config", ipl= 0, pid= 309
-Traceback= 29AF8E4 29B1E04 29B2068 2C3D198 1164564 1163534 1160320 1169408
134B664 134B6F0 1ECAA54 1F5D2E4 1F5DA08 1620C20 1621984 1621B28

Also upon trying to save the config:

TEST#copy run start
Destination filename [startup-config]?
startup-config file open failed (Not enough space)
0 bytes copied in 0.00

So the 512k NVRAM isn't enough.

Does anyone know a Cisco model that can handle this many instances of HSRP,
number of secondary subnets, and has the NVRAM to save the actual config?
(couple of meg I guess) ?

...Skeeve



*Skeeve Stevens, CEO*
eintellego Pty Ltd
skeeve [at] eintellego ; www.eintellego.net <http://www.eintellego.net.au>

Phone: 1300 753 383 ; Fax: (+612) 8572 9954

Cell +61 (0)414 753 383 ; skype://skeeve

facebook.com/eintellego

twitter.com/networkceoau ; www.linkedin.com/in/skeeve

PO Box 7726, Baulkham Hills, NSW 1755 Australia

The Experts Who The Experts Call
Juniper - Cisco Ė Brocade - IBM
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rdobbins at arbor

Apr 4, 2012, 10:49 PM

Post #2 of 4 (954 views)
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Re: Which switch can do what we need? [In reply to]

On Apr 5, 2012, at 12:25 PM, Skeeve Stevens wrote:

> Does anyone know a Cisco model that can handle this many instances of HSRP, number of secondary subnets, and has the NVRAM to save the actual config?

They should be using GLBP rather than HSRP; look at a 4500 w/Sup7.

-----------------------------------------------------------------------
Roland Dobbins <rdobbins [at] arbor> // <http://www.arbornetworks.com>

Luck is the residue of opportunity and design.

-- John Milton


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tom at snnap

Apr 5, 2012, 1:43 PM

Post #3 of 4 (941 views)
Permalink
Re: Which switch can do what we need? [In reply to]

Hey Skeeve,

Re config size, have you thought about using "service compress-config"?

This might help to reduce the config size by about 25-30%, which may
or may not be enough, or may not be enough for long enough.

Just a quick dir I did before adding command:

Router#dir nvram:
Directory of nvram:/

237 -rw- 1292 <no date> startup-config

And after:

Router#wr
Building configuration...

Compressed configuration from 1316 bytes to 829 bytes[OK]
Router#dir nvram:
Directory of nvram:/

237 -rw- 829 <no date> startup-config

Though if your config is that big, maybe it is just worth finding a
box with bigger NVRAM anyway. :-)

Also I wonder, on some Cat switches NVRAM is just flash emulated
anyway (which might explain why some of them write their config so
quickly...) I wonder if theres some special command that can increase
the amount allocated to the virtual NVRAM?

Tom


On 5 April 2012 06:25, Skeeve Stevens <skeeve+cisconsp [at] eintellego> wrote:
> Hey all,
>
> I have a customer trying to setup a solution for some hosting.
>
> They want to have a dozen or so VLANs with thousands of secondary subnets
> across these VLANs all configured with HSRP.
>
> Initially they are testing with Cisco 3750's and they are having problems:
>
> Apr  5 11:48:26.484 AEST: %SYS-2-MALLOCFAIL: Memory allocation of 395648
> bytes failed from 0x1164560, alignment 0
> Pool: Processor  Free: 1212608  Cause: Memory fragmentation
> Alternate Pool: None  Free: 0  Cause: No Alternate pool
>  -Process= "hulc running config", ipl= 0, pid= 309
> -Traceback= 29AF8E4 29B1E04 29B2068 2C3D198 1164564 1163534 1160320 1169408
> 134B664 134B6F0 1ECAA54 1F5D2E4 1F5DA08 1620C20 1621984 1621B28
>
> Also upon trying to save the config:
>
> TEST#copy run start
> Destination filename [startup-config]?
> startup-config file open failed (Not enough space)
> 0 bytes copied in 0.00
>
> So the 512k NVRAM isn't enough.
>
> Does anyone know a Cisco model that can handle this many instances of HSRP,
> number of secondary subnets, and has the NVRAM to save the actual config?
> (couple of meg I guess) ?
>
> ...Skeeve
>
>
>
> *Skeeve Stevens, CEO*
> eintellego Pty Ltd
> skeeve [at] eintellego ; www.eintellego.net <http://www.eintellego.net.au>
>
> Phone: 1300 753 383 ; Fax: (+612) 8572 9954
>
> Cell +61 (0)414 753 383 ; skype://skeeve
>
> facebook.com/eintellego
>
> twitter.com/networkceoau ; www.linkedin.com/in/skeeve
>
> PO Box 7726, Baulkham Hills, NSW 1755 Australia
>
> The Experts Who The Experts Call
> Juniper - Cisco ‚Äď Brocade - IBM
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp [at] puck
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/

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shopik at inblock

Apr 5, 2012, 3:17 PM

Post #4 of 4 (962 views)
Permalink
Re: Which switch can do what we need? [In reply to]

Boot buffersize change size of nvram simulate file, there no nvram all files stored on flash.

On 06.04.2012, at 0:43, Tom Storey <tom [at] snnap> wrote:

> Hey Skeeve,
>
> Re config size, have you thought about using "service compress-config"?
>
> This might help to reduce the config size by about 25-30%, which may
> or may not be enough, or may not be enough for long enough.
>
> Just a quick dir I did before adding command:
>
> Router#dir nvram:
> Directory of nvram:/
>
> 237 -rw- 1292 <no date> startup-config
>
> And after:
>
> Router#wr
> Building configuration...
>
> Compressed configuration from 1316 bytes to 829 bytes[OK]
> Router#dir nvram:
> Directory of nvram:/
>
> 237 -rw- 829 <no date> startup-config
>
> Though if your config is that big, maybe it is just worth finding a
> box with bigger NVRAM anyway. :-)
>
> Also I wonder, on some Cat switches NVRAM is just flash emulated
> anyway (which might explain why some of them write their config so
> quickly...) I wonder if theres some special command that can increase
> the amount allocated to the virtual NVRAM?
>
> Tom
>
>
> On 5 April 2012 06:25, Skeeve Stevens <skeeve+cisconsp [at] eintellego> wrote:
>> Hey all,
>>
>> I have a customer trying to setup a solution for some hosting.
>>
>> They want to have a dozen or so VLANs with thousands of secondary subnets
>> across these VLANs all configured with HSRP.
>>
>> Initially they are testing with Cisco 3750's and they are having problems:
>>
>> Apr 5 11:48:26.484 AEST: %SYS-2-MALLOCFAIL: Memory allocation of 395648
>> bytes failed from 0x1164560, alignment 0
>> Pool: Processor Free: 1212608 Cause: Memory fragmentation
>> Alternate Pool: None Free: 0 Cause: No Alternate pool
>> -Process= "hulc running config", ipl= 0, pid= 309
>> -Traceback= 29AF8E4 29B1E04 29B2068 2C3D198 1164564 1163534 1160320 1169408
>> 134B664 134B6F0 1ECAA54 1F5D2E4 1F5DA08 1620C20 1621984 1621B28
>>
>> Also upon trying to save the config:
>>
>> TEST#copy run start
>> Destination filename [startup-config]?
>> startup-config file open failed (Not enough space)
>> 0 bytes copied in 0.00
>>
>> So the 512k NVRAM isn't enough.
>>
>> Does anyone know a Cisco model that can handle this many instances of HSRP,
>> number of secondary subnets, and has the NVRAM to save the actual config?
>> (couple of meg I guess) ?
>>
>> ...Skeeve
>>
>>
>>
>> *Skeeve Stevens, CEO*
>> eintellego Pty Ltd
>> skeeve [at] eintellego ; www.eintellego.net <http://www.eintellego.net.au>
>>
>> Phone: 1300 753 383 ; Fax: (+612) 8572 9954
>>
>> Cell +61 (0)414 753 383 ; skype://skeeve
>>
>> facebook.com/eintellego
>>
>> twitter.com/networkceoau ; www.linkedin.com/in/skeeve
>>
>> PO Box 7726, Baulkham Hills, NSW 1755 Australia
>>
>> The Experts Who The Experts Call
>> Juniper - Cisco Ė Brocade - IBM
>> _______________________________________________
>> cisco-nsp mailing list cisco-nsp [at] puck
>> https://puck.nether.net/mailman/listinfo/cisco-nsp
>> archive at http://puck.nether.net/pipermail/cisco-nsp/
>
> _______________________________________________
> cisco-nsp mailing list cisco-nsp [at] puck
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/

_______________________________________________
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