Hi all,
there were a lot of answers to this Questions already. And as most of the
otheres remarked, this setup won't work because both interface addresses are
in the same subnet and the Cisco doesn't allow this. Nor does a Cisco allow
an unnumbered configuration on an interface.
As a extension to all those answers, I think what RTS tries to do here is
physical redundency (for the case when one of the Interfaces fails).
There are two ways to do that:
If you 2621 is connected to a vlan cabable Switch, then turn on trunking,
then you have one virutal (vlan) Interface with an IP address and the 2
links are just trunks to a Switch. (You could even turn on EtherChannel and
use the combined Bandwidt. If the 2600 supports EtherChannel, dunno).
Second way would be to use the backup interface command, then you can use
the same address on both interfaces. The backup one will be in standby mode
until the primary one is up again.
e.g:
int f0/0
ip address x.x.x.x y.y.y.y
backup interface f1/0
int f1/0
ip address x.x.x.x y.y.y.y
Cheers,
Chris
-----Original Message-----
From: RTS [mailto:rts@rdr.net]
Sent: 28 March 2001 23:28
To: isp-tech@isp-tech.com
Cc: cisco-nsp@puck.nether.net
Subject: [nsp] Cisco Setup 2621
I am trying to set up a FastEthernet0/1 port on a 2621 router.
I am trying to either set the ip address or use unnumbered.
I have ip on F0/0 as xxx.xxx.xxx.129 255.255.255.192
When I set the F0/1 as xxx.xxx.xxx 130 255.255.255.192 I get the following:
xxx.xxx.xxx.128 overlaps with FastEthernet0/0
When I set the F0/1 as ip unnumbered F0/0 I get the following:
Point-to-point (non-multi-access) interfaces only
What is the problem I am not seeing.
Thanks
Randy
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