Studying for ensari.
I am having trouble not having eigrp suppeessing the more specific advertisements after configuring summarization on the interfaces, it is advertizing the more specific routes.
When I specify summary address in traditional eigrp mode it suppresses the more specific routes, when I do the same thing in named mode it advertises the more specific routes. i want to know if this is default behavior for named mode or something wrong in my configuration.
In below router Fenix is using traditional eigrp and only advertising summary route, whereas Santiago is using named mode and advertising summary only.
Fenix configuration
interface Loopback0
ip address 172.16.0.1 255.255.255.0
!
interface Loopback1
ip address 172.16.1.1 255.255.255.0
!
interface Loopback2
ip address 172.16.2.1 255.255.255.0
!
interface Loopback3
ip address 172.16.3.1 255.255.255.0
!
interface Loopback4
ip address 172.16.4.1 255.255.255.0
!
interface Loopback5
ip address 172.16.5.1 255.255.255.0
!
interface Loopback6
ip address 172.16.6.1 255.255.255.0
!
interface Loopback7
ip address 172.16.7.1 255.255.255.0
!
interface Ethernet0/0
no ip address
shutdown
!
interface Ethernet0/1
ip address 192.168.12.3 255.255.255.0
!
interface Ethernet0/2
ip address 192.168.13.3 255.255.255.0
!
interface Ethernet0/3
no ip address
shutdown
!
!
!
!
router eigrp 1
network 0.0.0.0
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
I specify on each interface:
ip summary-address eigrp 1 172.16.0.0 255.255.248.0
And this is the routing table of other routers:
Here is router Santiago which advertises everything, the summary, and more specific routes:
interface Loopback0
ip address 10.0.0.2 255.255.255.0
!
interface Loopback1
ip address 10.0.1.2 255.255.255.0
!
interface Loopback2
ip address 10.0.2.2 255.255.255.0
!
interface Loopback3
ip address 10.0.3.2 255.255.255.0
!
interface Loopback4
ip address 10.0.4.2 255.255.255.0
!
interface Loopback5
ip address 10.0.5.2 255.255.255.0
!
interface Loopback6
ip address 10.0.6.2 255.255.255.0
!
interface Loopback7
ip address 10.0.7.2 255.255.255.0
!
interface Ethernet0/0
ip address 192.168.23.1 255.255.255.0
!
interface Ethernet0/1
ip address 192.168.12.1 255.255.255.0
!
interface Ethernet0/2
no ip address
shutdown
!
interface Ethernet0/3
no ip address
shutdown
!
!
router eigrp omega
!
address-family ipv4 unicast autonomous-system 1
!
topology base
exit-af-topology
network 0.0.0.0
exit-address-family
here I specify on each interface:
ip summary-address eigrp 1 10.0.0.0 255.255.248.0
and the other router's routing tables:
And I just noticed that there is actually no summary route being advertised so it seems like a configuration issue. Any 1 have any thoughts to where I could summarize this properly in named mode?
Are you sure. I believe it would need to be a really old or really bad image to not have that command. If that's the case I would suggest using more up to date images in your lab if you want the best hands on experience, or else you will think something is a bug or not configurable (or spend hours on an issues that isn't an issue).
2 things:
1. I am running the below version
Router#sh ver
Boson Operating Simulation Software
BOSS (tm) C3600 Software (C3600-Enterprise), Version 15.b, RELEASE SOFTWARE
Copyright (c) 1998-2023 by Boson Software, Inc.
and it has the command
2. When you configure EIGRP named mode all interface commands under the actual interface for EIGRP become obsolete and do NOT work. You need to go into the Named mode structure and either under af-interface default or a specific af-interface you can configure the summary address and other interface specific commands. Note that the command starts with summary address and not the typical ip summary-address.
Studying for ENARSI make sure you have good reliable images and equipment to be successful in your studies.
Good luck!
-David
