From: ccie2be (ccie2be@nyc.rr.com)
Date: Tue May 13 2003 - 13:39:07 GMT-3
Hey Jonathan,
Thanks for getting back to me. It sounds like the cisco 2500-R version of
the router refers to the motherboard being used. Is that your take? If
that's the case, maybe there isn't any better way to tell which type of 2500
you have other than by just trying the copy command and seeing what happens.
Knowing Cisco, I'm sure there must be some show command that would answer
this but perhaps the command isn't documented. In any case, it seems that
if there is some way of knowing, it's not widely known what way that is.
Fortunately, in the overall sceme of things, this isn't a biggie. But,
thanks just the same. Jim
----- Original Message -----
From: "Jonathan V Hays" <jhays@jtan.com>
To: "'Group Study'" <ccielab@groupstudy.com>
Cc: "'ccie2be'" <ccie2be@nyc.rr.com>; <etoman@netune.biz>
Sent: Tuesday, May 13, 2003 10:52 AM
Subject: RE: IOS Upgrade problem
You might find the information quoted below to be of interest. It's from
an email received from Earl Toman (CCIE 2209) back in January of this
year, when I had a question about a router he was selling on eBay:
---------
"With regard to the DRAM, the scenario on the 2500 series is as follows:
- Motherboard versions A to G had two meg of DRAM soldered onboard.
- If no other DRAM in the router, this 2 meg DRAM is used as 1 meg RAM,
1
meg shared by the 2500 family
- If a DRAM SIMM is inserted in the router, the 2 megs of onboard DRAM
is
used as shared DRAM as you mentioned.
- Motherboard versions other than A to G don't have the additional 2
megs of
DRAM. They split their DRAM SIMM memory into 2 megs of shared memory,
and
whatever is left becomes regular RAM
I happen to know the hardware rather well on this family of routers
since
I've taught Global Knowledge's "Introduction to Cisco Router Hardware"
for
quite a few years."
---------
Unfortunately he doesn't say exactly how you tell which motherboard you
have, however.
HTH,
Jonathan
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> Behalf Of ccie2be
> Sent: Tuesday, May 13, 2003 8:15 AM
> To: Group Study
> Subject: Re: IOS Upgrade problem
>
>
> Hi Sam,
>
> Thanks for your response. I didn't know about these 2 flavors
> of 2500's. Is
> there a way of telling which flavor a router is besides
> seeing if the copy
> tftp flash command doesn't work? Maybe from the serial # or
> something in
> the output of sh ver? Thanks very much. Jim
>
> ----- Original Message -----
> From: "Sam Munzani" <sam@munzani.com>
> To: "ccie2be" <ccie2be@nyc.rr.com>; "Group Study"
> <ccielab@groupstudy.com>;
> "kym blair" <kymblair@hotmail.com>
> Sent: Monday, May 12, 2003 10:34 AM
> Subject: Re: IOS Upgrade problem
>
>
> > In 2500 series there used to be 2 different kind of
> routers. 2500 and
> > 2500-R. The second kind of routers had enough RAM to run
> whole IOS from
> the
> > RAM. It needed flash only during boot up and after that
> whole image was
> > loaded in the RAM. These routers you can upgrade without
> config-register
> > changes. All others required config register changes.
> >
> > Sam Munzani
> > CCIE # 6479
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