[97897] in North American Network Operators' Group
Cisco 7200 series and G2 NPEs
daemon@ATHENA.MIT.EDU (Steven Haigh)
Sun Jul 15 23:30:56 2007
Date: Mon, 16 Jul 2007 13:29:53 +1000
From: Steven Haigh <netwiz@crc.id.au>
To: nanog@merit.edu
Errors-To: owner-nanog@merit.edu
Hi all,
I'm wondering if there is anyone willing to share any experiences they =20
have had with Cisco 7200 series equipment (specifically relating to =20
the G2 NPE) and any 12.4 based IOS.
We were initially advised by Cisco to run 12.4(4)-XD7, however upon =20
introducing our first G2 into the network, the vpdn target routers had =20
a ~20% CPU usage increase, while the G2 itself showed signs of =20
incorrectly establishing tunnels. Changing back to a G1 NPE (same =20
config) and everything works as expected.
Cisco has recommended that we move to a 12.2 SB IOS for the G2, =20
however I'm wondering what other people are doing.
On another note, it seems as though it is not possible to recover a G2 =20
from a rommon state with invalid bootloader images or corrupt =20
bootflash:. There are no commands in the rommon to allow Xmodem =20
uploads via the console, nor any networking functions. I also noticed =20
that it seems to be impossible to load the bootloader from a CF card - =20
even though you can list the contents of the CF card.
Does anyone have any recovery techniques that I'm not aware about in a =20
real world failure scenario?
--=20
Steven Haigh
Email: netwiz@crc.id.au
Web: http://www.crc.id.au
Phone: (03) 9017 0597 - 0404 087 474
