From: Robert Laidlaw (laidlaw@consecro.com)
Date: Tue Jul 29 2003 - 13:38:07 GMT-3
You cannot form adj. with the secondary address. It will not work for eigrp
or ospf.
----- Original Message -----
From: "ccie2be" <ccie2be@nyc.rr.com>
To: "Group Study" <ccielab@groupstudy.com>; "Gyuri Gabor"
<Gabor.Gyori@lnx.hu>
Sent: Tuesday, July 29, 2003 11:36 AM
Subject: Re: Can't form Eigrp neighbors using 2ndary address
> When using the 2ndary ip address (10.2.6.6 on R6's int E0), R6 doesn't
form
> a neighbor relationship with R7 which is using ip addr 10.2.6.7 on it's
int
> E0. R6 shows R7 as a neighbor but R7 doesn't see R6 as a neighbor.
>
> I tried using the neighbor command on R7 but that didn't work. Is this
> possibly a IOS version issue? R7 is using IOS 12.0 but R6 is running
12.1.
> Or, is there a special command I need to use?
>
> R6 and R7 can ping each other. Thanks, Raj
>
>
> ----- Original Message -----
> From: "Gyuri Gabor" <Gabor.Gyori@lnx.hu>
> To: "ccie2be" <ccie2be@nyc.rr.com>
> Sent: Tuesday, July 29, 2003 11:48 AM
> Subject: RE: Can ping to a 2ndary addr but not from 2ndary addr
>
>
> Routers (and hosts as well) allways use their primary IP address of their
> outgoing interface as source address when originating packet.
>
> When You ping 10.2.6.7 from R6, the source IP address of the echo request
> packet is
> 172.16.136.6. This address does not appear in routing table of R7 so it
> drops the reply packet.
>
> Gabor
>
> -----Original Message-----
> From: ccie2be [mailto:ccie2be@nyc.rr.com]
> Sent: Tuesday, July 29, 2003 5:40 PM
> To: Group Study
> Subject: Can ping to a 2ndary addr but not from 2ndary addr
>
>
> Hi,
>
> This seems very strange to me.
>
> I have 2 routers R6 and R7 connected via a Cat5k Ethernet. Both routers
int
> E0 are in vlan 2,
>
> R7 config:
>
> int e0
> ip addr 10.2.6.7 255.255.254.0
>
>
> R6 config:
>
> int E0
> ip addr 10.2.6.6 255.255.254.0 secondary
> ip addr 172.16.136.6 255.255.255.0
>
> The route table of both routers shows an entry for 10.2.6.0/23 and both
int
> are up up when I do a show int e0.
>
> From R7 I can ping 10.2.6.6 but from R6 I can't ping 10.2.6.7
>
> Can anybody explain why this is and what I should about it?
>
> I'd very much would appreciate it. Thanks, Raj
>
>
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