How often does TSA read the dot1dBridge table in the switch ? is it every
15 minutes ?
Where does this recommendation come from and where is it documented ?

Thanks,
Salutations, / Regards,

Francois Le Hir
Network Projects & Consulting Services
IBM Global Services
Phone: (514) 964 2145


                                                                           
             "Barr, Scott"                                                 
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                                       RE: [nv-l] dot1dbridge              
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Follow up from our router guru:

IOS type looks like the following.

csg-gss-sw1(config)#mac-address-table aging-time XXX

So that covers both flavors of the Cisco switch IOS?s


From: owner-nv-l AT lists.us.ibm DOT com [mailto:owner-nv-l AT lists.us.ibm DOT 
com] On
Behalf Of Barr, Scott
Sent: Wednesday, October 27, 2004 3:04 PM
To: nv-l AT lists.us.ibm DOT com
Subject: RE: [nv-l] dot1dbridge

Leslie, hope this helps? it?s not the mib variable but will get you closer:

This looks like the command for a CatOs type switch.  It would be different
for a IOS type switch.

csg-mildc-sw1> (enable) set cam ?

  agingtime                  Set CAM aging time
  dynamic                    Set dynamic CAM entries
  notification               Set MAC address change notification
  permanent                  Set permanent CAM entries
  static                     Set static CAM entries
csg-mildc-sw1> (enable) set cam agingtime ?
  <vlan>                     VLAN number
csg-mildc-sw1> (enable) set cam agingtime XXX

A show cam agingtime shows each vlan at 300 sec.  Hopefully there is a way
to change it globally instead of per VLAN.



From: owner-nv-l AT lists.us.ibm DOT com [mailto:owner-nv-l AT lists.us.ibm DOT 
com] On
Behalf Of Barr, Scott
Sent: Wednesday, October 27, 2004 2:57 PM
To: nv-l AT lists.us.ibm DOT com
Subject: RE: [nv-l] dot1dbridge

Leslie, I?ve forwarded your question to our router guru.

The key difference is that ARP cache is a media layer mechanism for tying
an IP address to a MAC address. What you are asking about is tying a bridge
number to a MAC address i.e. this bridge has knowledge of this MAC address
on this segment number. When he gives me an answer I?ll post it.


From: owner-nv-l AT lists.us.ibm DOT com [mailto:owner-nv-l AT lists.us.ibm DOT 
com] On
Behalf Of Leslie Clark
Sent: Wednesday, October 27, 2004 2:49 PM
To: nv-l AT lists.us.ibm DOT com
Subject: [nv-l] dot1dbridge


Can anyone tell me the proper terminology to use when asking a Cisco guy to
change the age-out time for the forwarding table in the dot1dBridge mib?
They think I am talking about the arp cache, but I am not. For Switch
Analyzer it is recommended to increase the value from the default of 300
seconds to 900 seconds, and I can tell them the mib variable, but I cannot
give them the command in Cisco-ese.

For clarity, the mib variable is:

iso.org.dod.internet.mgmt.mib-2.dot1dBridge.dot1dTp.dot1dTpAgingTime
.1.3.6.1.2.1.17.4.2

Cordially,

Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
Detroit