From: Alan Ewer (acewer64@gmail.com)
Date: Thu Jul 26 2007 - 10:27:22 ART
Hi ..
What about this
ip access-list standard EVEN_SECOND_OCTET permit 30.0.0.0 254.254.255.255
Regds
AlanE
On 7/26/07, Ajay Prakash <ajay.prakash@networkpeople.co.in> wrote:
>
> Hello,
>
> I have just completed task 4.10 in IE lab 2.
>
> The task requires to filter off all rip routes recieved that have a even
> second octet with a single statement in the access list. While doing so
> the
> loopback route from the advertising switch also filtered off.
>
> This happened because in my rack rental I am using rack 2 and thus the
> second octet of the loopback route is also even. When i checked the
> solution, there is no mention of this as in the solution they have used
> rack
> 1.
>
> So to make things work, I added one more statement in the access list so
> that this route is permitted. Now in doing so, my access list is now 2
> statements against the requirement of 1 statement.
>
> I presume that this problem cannot be tackeled in 1 accesslist statement
> due
> to the fact that I am working on rack 2. Am I correct in saying so??
>
>
> This is the access list in my configuration now:
>
> Rack2SW1#sh access-l
> Standard IP access list EVEN_SECOND_OCTET
> 5 deny 150.2.8.0, wildcard bits 0.0.0.255 (21 matches)
> 10 permit 0.0.0.0, wildcard bits 255.254.255.255 (222 matches)
> !
> router rip
> version 2
> offset-list EVEN_SECOND_OCTET in 16 Vlan783
> network 150.2.0.0
> network 204.12.2.0
> no auto-summary
> !
>
> Rack2SW1#sh ip route rip
> 31.0.0.0/16 is subnetted, 2 subnets
> R 31.3.0.0 [120/1] via 204.12.2.254, 00:00:08, Vlan783
> R 31.1.0.0 [120/1] via 204.12.2.254, 00:00:08, Vlan783
> 150.2.0.0/16 is variably subnetted, 4 subnets, 2 masks
> R 150.2.8.0/24 [120/1] via 204.12.2.8, 00:00:08, Vlan783
> 30.0.0.0/16 is subnetted, 2 subnets
> R 30.3.0.0 [120/1] via 204.12.2.254, 00:00:08, Vlan783
> R 30.1.0.0 [120/1] via 204.12.2.254 , 00:00:08, Vlan783
>
> If we do not include the first statement in the access list ie. 5 deny
> 150.2.8.0, wildcard bits 0.0.0.255, then the route to loopback 150.2.8/0
> also gets filtered off
>
> Thanks.
>
>
> Regards,
> Ajay Prakash
>
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