Re: [nv-l] 0.0.0.0 interfaces

[Bartlomiej Grenda <Bartlomiej.Grenda@pl.ibm.com>]

Thanks Oliver!

I always believed that unnumbered links are recognized only on WAN links.
So in case of L3 switches interconnected we will se something like L2
topology... Anyone can decipher xxx and yyy in interface name (described
below).
Additionally, I wonder - what will happen if CDP will be turned off on
these devices. Will status of links represented on map retain until CDP
cache will be emptied (and configuration poll done), or will exists forever
on map (until manually removed)?

Regards

Bartlomiej Grenda



                                                                           
             Oliver                                                        
             Bruchhaeuser/Germ                                             
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this are socalled "unnumbered links".
On Cisco boxes NetView is discovering the "neighbours" from the CDP cache:
snmpwalk <CiscoBox> .1.3.6.1.4.1.9.9.23.1.2.1.1.6

Hope this helps.

Oliver

                                                                           
 Bartlomiej Grenda/Poland/IBM@IBMPL                                        
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                     nv-l                                  [nv-l] 0.0.0.0  
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NetView 7.1.4 Fixpack 1 on Windows 2000 Professional

Above NetView manages L2 network consisting of over 50 switches. Some of
them are L3 switches (core switches) having only one managment IP managment
address, rest are simple L2 switches (having only one managment IP address
as well). On NetView map L3 switches are located on "IP internet" submap
(that's OK, probably because mib2.system.services field says that these are
L3 devices), while L2 switches are located on suitable IP subnet map (thats
OK for me too). But on "IP Internet"  submap L3 switches are directly
interconnected (almost full mesh), and every single switch have number of
0.0.0.0 interfaces (except it's normal managment IP address interface).
Number of these interfaces in particular L3 switch are the same as number
of this L3 switch direct interconnections to other L3 switch. Anyway, these
don't behave as typical connections - when you select connection and then
double-click device on end of this connection suitable interface is NOT
selected. Name of that 0.0.0.0 interfaces is like
"switch1name.domain:switch1name:xxx::switch2name:yyy" where xxxx and yyy
are integer numbers.

I'm quite confused... How shoud I interpret these 0.0.0.0 interfaces?

Regards

Bartlomiej Grenda