Hi, IMHO it is technically incorrect to configure anything but /32 on a loopback. Last time I checked, OSPF in IOS advertised the loopback address as /32 regardless of the configured mask, but other protocols did not (ie. they advertised the mask as you configured it). So if you ever configure two or more loopbacks with /24 and they happen to be in the same subnet, and the routing protocol happens to advertise this information as you configured it, then you will have an unreachable loopback.
Thanks, Zsombor At 08:25 AM 6/23/2003 +0000, Lesly Verdier wrote: >Hi Group, > >I'm practicing the Satterlee and Hutnik labs. Sometimes they >ask to configure the loopback interfaces differently. > >interface Loopback 0 > ip address 26.26.26.26 255.255.255.0 > >or > >interface Loopback 0 > ip address 29.29.29.29 255.255.255.255 > > >Is there a subtle but important difference between a /24 subnet >mask and a /32 subnet mask? When and why do you prefer one over >the other? > >Thanks, > >Lesly Verdier Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71137&t=71121 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
