04-16-2005 05:56 PM - edited 03-03-2019 09:19 AM
Hi all,
I'm reading the CiscoPress book "EIGRP Network Design Solutions" at the moment and had a query regarding the use of the 'ip default-network' command with EIGRP.
The author states that when the 'ip default-network' is used for a connected network, it will be marked as a candidate default and will be automatically redistributed into all EIGRP processes (even if redistribution of connected networks into EIGRP is NOT configured).
I've attempted this in my lab and the automatic redistribution does not happen. Has the behaviour changed in newer IOS releases ?
Thanks in advance.
Paresh Khatri
04-16-2005 07:18 PM
I havent tested it on a connected network, but I have tried it on static routes. Configure a static route on one router and use that network as default network.
04-16-2005 08:08 PM
So are you saying that when you configure a static route as a default network, it will be automatically redistributed into EIGRP, even without a 'redistribute static' ?
That's not what I see in my lab...
Still looking for answers...
Paresh.
04-17-2005 01:17 AM
Hi Paresh,
This will clear your doubt
HTH
Ankur
04-17-2005 02:56 AM
I don't think that statement is accurate, based on this excerpt:
"Gateways of last resort selected using the ip default-network command are propagated differently depending on which routing protocol is propagating the default route. For IGRP and EIGRP to propagate the route, the network specified by the ip default-network command must be known to IGRP or EIGRP. This means the network must be an IGRP- or EIGRP-derived network in the routing table, or the static route used to generate the route to the network must be redistributed into IGRP or EIGRP, or advertised into these protocols using the network command"
From:
Configuring a Gateway of Last Resort Using IP Commands
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094374.shtml#protocols
It would be nice if you could post your configs and route tables.
HTH,
Mustafa
04-17-2005 02:59 AM
Hi Mustafa,
That's exactly what I've been getting at..
Unless there is explicit redistribution of the static/connected routes, it should not enter the EIGRP topology table.
Cheers,
Paresh.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide