[27482] in North American Network Operators' Group
Re: Odd problem on very old Cisco ios (OT)
daemon@ATHENA.MIT.EDU (I Am Not An Isp)
Mon Feb 21 05:19:08 2000
Message-Id: <4.2.2.20000221015045.02c23150@mail.ianai.net>
Date: Mon, 21 Feb 2000 01:53:41 -0800
To: nanog@merit.edu
From: I Am Not An Isp <patrick@ianai.net>
In-Reply-To: <Pine.LNX.4.10.10002210041550.25904-100000@redhat1.mmaero.c
om>
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Errors-To: owner-nanog-outgoing@merit.edu
At 12:46 AM 2/21/00 -0500, jlewis@lewis.org wrote:
>
>On Sun, 20 Feb 2000, Mr. James W. Laferriere wrote:
>
>> Silverdale#copy tftp flash
>> Copy aborted. Flash address space cannot be written to.
>
>2501's default to running from flash. If it let you blow away the flash
>while code was running from it, bad things would happen.
[SNIP - directions on booting from ROM]
Be sure your ROM supports the new IOS rev or it will not come back properly.
Also note, a 2501 booted from ROM does not have full functionality. For
instance, most older ROMs did not support FR sub-interfaces. In fact, some
older ROMs did not even support ip routing, so you had to use the "ip
default-gateway" command or have a TFTP server on the same
network. (The default-gateway command is ignored if ip routing is running.)
> Jon Lewis *jlewis@lewis.org*| Spammers will be winnuked or
TTFN,
patrick
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