
redundancy and diversity?
Instead of a second pair of Cisco boxen, Clint* might been wiser to go for another vendor with an obviously different CLI. Juniper or... Huawei ;). I recall the latter's new enterprise switches around the turn of the century were a fraction of the price of the US vendors. Presumably why so much fun has been had pulling them out later.
On hosts I *always* include the hostname (via $(hostname --short)) in the $prompt/$PS1 especially for superuser accounts. Some who ought to know better when replacing a running machine have the new machine with the same hostname *and* on the network but with different IPs. Plenty of scope there for "les culottes chocolate" (brown breeches.)
* the cinematic references abound "do you feel lucky punk", or "a fist full of dollars" as well as "for a few dollars more" and not forgetting "the good, the bad and the ugly" each of which could apply quite generally to any of the large IT and network kit vendors but perhaps without the "good."