From: Earl Aboytes (earl@xxxxxxxxxxxx)
Date: Fri May 26 2000 - 19:10:07 GMT-3
Here is a kewl question.
Can anyone explain what is going on here?
Using access lists to filter supernets is a bit tricky. Assume, for example, t
hat a router has different subnets of 160.10.x.x and you want to advertise 160.
0.0.0/8 only. The following access list would permit 160.0.0.0/8, 160.0.0.0/9 a
nd so on (remember, this is a class B address space). access-list 1 permit 160
.0.0.0 0.0.0.255
To restrict the update to 160.0.0.0/8 only, you have to use an extended access
list, such as the following:
access-list 101 permit ip 160.0.0.0 0.255.255.255 255.0.0.0 0.255.255.255
What are they talking about!?!?!?!?
To me it looks like the destination network is 255.0.0.0/8. Is that what is su
pposed to be going on here? Can anyone shed some light on this?
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:23:31 GMT-3