ipv6 acl's

From: ccie2be (ccie2be@nyc.rr.com)
Date: Wed Mar 09 2005 - 20:16:01 GMT-3

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Hi guys,

When an ipv6 acl is being configured, which type of ipv6 address should be
used: global, link-local, site-local?

I'm sure the answer depends but can someone explain how I should think about
this so I know how to go about this.

Assume this topology:

            /-> r3

r1 --> r2

           \--> r4

For example, suppose I need to block all ipv6 traffic at r2 coming from r1
and going to r3.

r2 is connected to r3 and r4 via a p2m f/r interface. I want to place the
acl on r2's interface connected to r1.

So, the acl will filter based on destination ipv6 address. Which type ipv6
address should be in the acl?

Does it matter?

Note that r3 interface has 2 types of ipv6 address: a link-local and a
global.

Thanks, Tim

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