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RE: [nv-l] dot1dbridge

To: <nv-l@lists.us.ibm.com>
Subject: RE: [nv-l] dot1dbridge
From: "Barr, Scott" <Scott_Barr@csgsystems.com>
Date: Wed, 27 Oct 2004 15:07:59 -0500
Delivery-date: Wed, 27 Oct 2004 21:08:57 +0100
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Thread-topic: [nv-l] dot1dbridge

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@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com] On Behalf Of Barr, Scott
Sent: Wednesday, October 27, 2004 3:04 PM
To: nv-l@lists.us.ibm.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@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com] On Behalf Of Barr, Scott
Sent: Wednesday, October 27, 2004 2:57 PM
To: nv-l@lists.us.ibm.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@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com] On Behalf Of Leslie Clark
Sent: Wednesday, October 27, 2004 2:49 PM
To: nv-l@lists.us.ibm.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

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