From: GAURAV MADAN (gauravmadan1177@gmail.com)
Date: Mon Jan 05 2009 - 11:03:13 ARST
well ,,,,, u are absolutely correct sbt point no 2
i.e if route map is referencing to a non existing ACL ; summary route as
well as all specific routes will be advertised .
U can lab this up very simply
EX
=====
R1 -======== R3
Rack1R3(config-if)#do sh ip int br | inc Loop
Loopback0 150.1.3.3 YES NVRAM up
up
Loopback1 11.0.1.1 YES manual up
up
Loopback2 11.0.2.1 YES manual up
up
Loopback3 11.0.3.1 YES manual up
up
Rack1R3(config-if)#
router eigrp 100
network 10.0.0.3 0.0.0.0
network 11.0.1.1 0.0.0.0
network 11.0.2.1 0.0.0.0
network 11.0.3.1 0.0.0.0
no auto-summary
WHEN I DO FOLLOWING :
Rack1R3(config-if)#do sh run int f0/0
Building configuration...
Current configuration : 144 bytes
!
interface FastEthernet0/0
ip address 10.0.0.3 255.0.0.0
ip summary-address eigrp 100 11.0.0.0 255.255.252.0 5 <====
Rack1R1(config-router)#do sh ip route eig
11.0.0.0/22 is subnetted, 1 subnets
D 11.0.0.0 [90/156160] via 10.0.0.3, 00:01:39, FastEthernet0/0
Rack1R1(config-router)#
BUT IF I DO FOLLOWING :
Rack1R3(config)#do sh route-map TEST
route-map TEST, permit, sequence 10
Match clauses:
ip address (access-lists): 121
Set clauses:
Policy routing matches: 0 packets, 0 bytes
BUT ACL 121 do not exist then :
Rack1R1(config-router)#do sh ip route eig
11.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
D 11.0.3.0/24 [90/156160] via 10.0.0.3, 00:00:03, FastEthernet0/0
D 11.0.2.0/24 [90/156160] via 10.0.0.3, 00:00:03, FastEthernet0/0
D 11.0.1.0/24 [90/156160] via 10.0.0.3, 00:00:03, FastEthernet0/0
D 11.0.0.0/22 [90/156160] via 10.0.0.3, 00:02:35, FastEthernet0/0
Rack1R1(config-router)#
HTH
Gaurav Madan
On 1/5/09, raaki.88@gmail.com <raaki.88@gmail.com> wrote:
>
> hello everyone while labbing i got a question stating to advertise specific
> routes and summaraised one ..
>
> i knew leak-map would do the trick and happy with it .. now my question is
> leak-map has 3 rules
>
> Three rules :
>
> If the leak-map is configured to reference a route-map that does not exist,
> only the summary route is advertised and the more specific routes are
> suppressed
>
> If the leak-map is configured to reference a route-map and the route-map is
> referencing an access-list that does not exist , then the summary routes
> and
> all
> the specific routes are advertised
>
> If the leakmap is configured to reference a route-map and the route-map
> matches
> and acl , all the permitted networks b the acl will be advertised along
> with
> the summary route
>
>
> its completely strange for me ... i cant see any logic ... for example if
> its
> an acl it will do what ever we wanted to permit or deny
>
> so when compared iam fine with first and last points ... straight stuff
> ..if
> acl is there it would filter if not it would ignore ..
>
> can any one explain me how does the point n0 2 works ?
>
> regards
> raaki
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
Blogs and organic groups at http://www.ccie.net
This archive was generated by hypermail 2.1.4 : Sun Mar 01 2009 - 09:43:36 ARST