E.2. Cisco 2511
The basic configuration for a Cisco 2511 access server is
shown in Figure E-1. A similar
configuration will work for other Cisco access servers. Cisco has
excellent documentation at its web site; start by finding the
correct Configuration guide.
A current maintenance contract with Cisco or a reseller is
required to download software updates. This contract also includes
the provision of ROMs required for flash memory
upgrades. In most jurisdictions Cisco software licenses are not
transferrable, so if you purcashed the access server on the
second-hand market you will need to purchase a software license
from Cisco or a reseller.
There is a port of
Linux to the Cisco 2500 series of
routers. At the time of writing it did did not support the
asycnhronous ports on the Cisco 2511.
The attractiveness of running Linux
instead of running Cisco's IOS is that
Linux can support SSH. At the time of writing Cisco were
yet to release SSH on the
Cisco 2500 series of routers, although a
unofficial beta version has been seen.