From: brian.m.edwards@xxxxxxxxx
Date: Tue Jan 04 2000 - 18:02:40 GMT-3
> Will a Catalyst 5000 with no default route configured use IRDP preference? Th
is is what I set up:
>
> R1[e0]---[5/1]Cat[5/2]---[e0]R2[s0]---[s0]R3
>
> R1:
> int e0
> ip address 172.16.30.1 255.255.255.0
> ip irdp
> ip irdp pref 100
> no ip redirects
> router eigrp 1
> netowork 172.16.0.0
>
> Cat:
> set vlan 50
> set vlan 50 5/1-2
> set int sc0 50 172.16.30.3 255.255.0.0 <---------- See note below
> clear ip route all
>
> R2:
> int e0
> ip address 172.16.30.2 255.255.255.0
> ip irdp
> ip irdp pref 90
> int s0
> ip address 172.16.32.2 255.255.255.0
> int lo0
> ip address 172.16.31.2 255.255.255.0
> router eigrp 1
> network 172.16.0.0
>
> R3
> int s0
> ip address 172.16.32.3 255.255.255.0
> int lo0
> ip address 172.16.33.3 255.255.255.0
> router eigrp 1
> network 172.16.0.0
>
> From Cat:
> trace 172.16.31.2
> 1 172.16.30.2
> 2 172.16.32.3
>
> I expected the trace to go through R1, b/c it has higher IRDP preference and
ICMP redirects are turned off. Why didn't it?
>
> Note: I want to set the mask on sc0 to 0.0.0.0, so it would ARP for everythin
g, but the Cat wouldn't let me do it. The shortest mask I could set was on the
classful boundary. Is there any way to make the Cat ARP for addresses outside i
t's own classful network? One idea I have is...
>
> set ip route 0.0.0.0 172.16.30.3 <------ address of sc0 interface
>
> but I am trying to do this without using static routes.
>
>
> Thanks for any help,
> Brian
>
>
> -----Original Message-----
> From: Natarajan Chidambaram [SMTP:nattu@neptune-tech.com]
> Sent: Sunday, December 12, 1999 1:40 PM
> To: 'Brian Van Benschoten '; 'ccielab@groupstudy.com '
> Subject: RE: IP IRDP commands
>
> No, you don't have to. That's for the proxy advertisement. It should be
like
> the one below.
>
> Router(config-if)ip irdp
> Router(config-if)ip irdp prefe 10000
>
> Nat
>
>
>
> -----Original Message-----
> From: Brian Van Benschoten
> To: ccielab@groupstudy.com
> Sent: 12/12/99 7:27 AM
> Subject: Re: IP IRDP commands
>
> Do you need to set an IP address when doing this. Like shown below
>
> ip irdp
> ip irdp address 172.16.30.2 200
> ip irdp address 172.16.30.6 500
>
> would this make the router hand out those 2 IP addresses to clients wit
h
> the
> noted preference ?
>
>
> ----- Original Message -----
> From: Natarajan Chidambaram <nattu@neptune-tech.com>
> To: 'Brian Van Benschoten ' <vader@inxpress.net>;
> <ccielab@groupstudy.com>
> Sent: Sunday, December 12, 1999 1:58 AM
> Subject: RE: IP IRDP commands
>
>
> > IP IRDP is used for discovery feature. This is an interface command.
> Assume
> > that you have two routers connected to the same subnet. If a client i
s
> > trying to reach the outside world the IRDP's auto discovery feature
> will
> be
> > used to forward the packet.
> >
> > To enable the IRDP the following things are required.
> >
> > 1. Enable the IRDP in all routers (IP IRDP)
> > 2. Set the IRDP preference. (IP IRPDP PREFERENCE XXXXX- where X is th
e
> > value, the higher preference value router will be used to forward the
> > packet.
> >
> > IRDP needs to be enabled in all the routers connected to the same
> subnet.
> >
> >
> > My two cents.
> >
> > -Nat
> >
> > -----Original Message-----
> > From: Brian Van Benschoten
> > To: ccielab@groupstudy.com
> > Sent: 12/11/99 6:05 PM
> > Subject: IP IRDP commands
> >
> > anyone know how or where the IP IRDP commands are used? can they be
> > used to
> > allow clients to get a default gateway/route or is it just for router
s
> > to
> > get a default route ?
> >
> >
> >
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