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Upppsss I’m very sorry for my previous BIG post mistake, the thing was because proxy-arp was enabled in the routers.
But here is how you configure IRDP on a Cisco Router/Switch.
R3(config)#ip gdp irdp %Cannot start GDP client; system is routing IP R3(config)#no ip routing R3(config)# R3(config)#ip gdp irdp R3(config)# R3(config)# R3(config)#^Z R3# R3#show ip ro 00:41:54: %SYS-5-CONFIG_I: Configured from console by console R3#show ip route Gateway Using Interval Priority Interface 150.100.1.1 IRDP 6 100000 Vlan24 150.100.1.2 IRDP 6 1000 Vlan24 Default gateway is 150.100.1.2 Host Gateway Last Use Total Uses Interface ICMP redirect cache is empty R3# 00:41:56: ICMP: rdp advert rcvd type 9, code 0, from 150.100.1.4 R3# 00:41:57: ICMP: rdp advert rcvd type 9, code 0, from 150.100.1.2 R3#u all All possible debugging has been turned off R3# 00:41:59: ICMP: rdp advert rcvd type 9, code 0, from 150.100.1.4 R3#
Please apologize for the SPAM Thanks Victor.-
—–Mensaje original—– De: Victor Cappuccio [mailto:cvictor@protokolgroup.com] Enviado el: Lunes, 31 de Julio de 2006 08:58 p.m. Para: ‘Mathew Fernando’; ‘ccielab@groupstudy.com’ Asunto: RE: IRDP in CCIE Lab & Real world use
Hi Mathew,
To Test this
Try to configure something like =R1= Lo-R6 = =R3 =R2=
If the diagram came mess up, r1,r2,r3 are in the same vlan, r1, r2, r6 are in other vlan.
At R1 enable irdp, also at R2 enable irdp.
Set the higher preference for the router you what to set as default Gateway Enable any IGP between R6 and R1 and R2, Redistriburte the R1,R2 Connected interfaces, so R6 could reach that network At R3 point a static Route to the fas0/0 to proxy-arp for any destination
To test this Sh down the inte sitting with R3 Clear arp at R3 And try again
This is what I saw labbing this today, with your requirement. I think that it could be a combination of Proxy-Arp at the router acting as default-gateway. I have not test the preferences of outgoing, so please excuse me if I’m wrong.
Saludos, Victor.-
—–Mensaje original—– De: nobody@groupstudy.com [mailto:nobody@groupstudy.com] En nombre de Mathew Fernando Enviado el: Lunes, 31 de Julio de 2006 07:31 p.m. Para: ccielab@groupstudy.com Asunto: IRDP in CCIE Lab & Real world use
Hi Group,
When we configure a CISCO router to announce itself as a Default gateway via IRDP, I think all we need is to configure “ip irdp” (minimum) under the LAN interface. Here I believe router acts as a server.
1. Is the IRDP client/server architecture?
2. Is this a dynamic way to tell the clients compared to static ways like HSRP/VVRP?
2. How do the Clients (Windows, Linux etc) learn this gateway?
Thanks
Mathew