RE: ip alias?

From: CharlesB (cbalik@adelphia.net)
Date: Tue Oct 03 2006 - 12:39:14 ART


No, I was using a practice router has no subnet on this IP block that I was
trying to type in.

Yes, you are correct. If it is a part of the subnet, the router is happy.

r6(config)#inter fas 0/0
r6(config-if)#ip add 1.1.1.1 255.255.255.0
r6(config-if)#exit
r6(config)#ip ali
r6(config)#ip alias 1.1.1.100 23
r6(config)#

and, it takes it.

Thanks.

-----Original Message-----
From: Scott Morris [mailto:swm@emanon.com]
Sent: Monday, October 02, 2006 7:39 PM
To: 'CharlesB'; ccielab@groupstudy.com
Subject: RE: ip alias?

Is that IP address part of a subnet you already have defined on the router?

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/htsv_r
/ter_a1h.htm#wp999279

Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI-M/JNCI-J
IPExpert VP - Curriculum Development
IPExpert Sr. Technical Instructor
smorris@ipexpert.com
http://www.ipexpert.com

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
CharlesB
Sent: Monday, October 02, 2006 9:43 PM
To: ccielab@groupstudy.com
Subject: ip alias?

r6(config)#ip alias 141.4.0.22 23
Invalid IP address

I get this error but the solution guide uses it as is. Am I doing something
wrong that I can not see?

Task indicates that sysadmin entered a wrong DNS IP for the router on the
DNS server.
So, users should still use the DNS entry IP or name to reach to this router.
We need to solve the problem without applying this IP to any interface on
the router. No NAT allowed either.

I even tried to put this IP on the loopback interface to test if it takes
it, but I get the same error.



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