Lots of prepends - AS20912 case
swmike at swm.pp.se
Fri Feb 20 08:05:48 CST 2009
On Fri, 20 Feb 2009, Dorn Hetzel wrote:
> Replacing what is conventially thought to be a string with an integer
> multiplier seems a massive violation of the principle of least astonishment.
On a Cisco running 12.0S:
set as-path prepend last-as ?
<1-10> number of last-AS prepends
Cisco seems to be doing more sensible limits, but I do agree that the
feature makes sense.
There are two ways of handling when someone puts in a very high number to
number of prepends:
1. Say "out of limit" and disallow it in the config checker.
2. Actually prepend the number of times specified.
The option done here:
3. Prepend number of times entered modulo 256, is just broken.
Mikael Abrahamsson email: swmike at swm.pp.se
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