Almost sure that one cannot assign an address on the 127 network to a cisco
router. This address is reserved for special reasons. One of the reasons
that come to mind is to test the TCP/IP stack on a workstation or Server. If
pinging the 127.0.0.1 address is successful, you can be almost sure that the
TCP/IP stack loaded properly. Now you could proceed to ping default gateway
etc etc.
Cisco routers provide this functionality by using a "loopback" command on
interfaces. If packets sent by an interface come back to the router, then
TCP/IP is probably OK. Allowing the 127 net on routers would probably cause
havoc especially on broadcast networks.
Winston(#7991)
-----Original Message-----
From: Ednilson Rosa [mailto:[EMAIL PROTECTED]]
Sent: Sunday, August 26, 2001 5:04 PM
To: [EMAIL PROTECTED]
Subject: Re: Could not ping 127.0.0.1 [7:17317]
On Cisco routers you must explicitly assign a loopback interface. If you
want it to be 127.0.0.1 you must do like this:
conf t
int loopback1
ip address 127.0.0.1 255.255.0.0
Then you will be able to ping yourself at this address.
The automatic "well known" loopback is valid only for nic cards and other
devices where you wouldn't be able to setup a loopback by other means.
Regards,
Ednilson Rosa
----- Original Message -----
From: "Lists Wizard"
To:
Sent: Sunday, August 26, 2001 11:19 AM
Subject: Could not ping 127.0.0.1 [7:17317]
Hi Group
Have any one tried to ping the well known loopback address 127.0.0.1? I
tried but I could not. I could ping the other ip interfaces on the router
though.
Any explanation is welcomed.
Thanks
Lw
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=17336&t=17317
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