From: Robert Laidlaw (laidlaw@consecro.com)
Date: Tue Jul 29 2003 - 13:42:11 GMT-3
http://www.cisco.com/warp/public/103/15.html, last paragraph.
"This happens because EIGRP updates always use the primary IP address of the
outgoing interface as the source address."
----- Original Message -----
From: "Robert Laidlaw" <laidlaw@consecro.com>
To: "ccie2be" <ccie2be@nyc.rr.com>; "Group Study" <ccielab@groupstudy.com>;
"Gyuri Gabor" <Gabor.Gyori@lnx.hu>
Sent: Tuesday, July 29, 2003 11:38 AM
Subject: Re: Can't form Eigrp neighbors using 2ndary address
> 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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