[cisco-voip] Re-enabled NIC on the Call Manager Has Prevented Access to the System - Please Help!

Sat May 19 15:36:54 EDT 2007

Using the Cisco Media Convergence Server Network Teaming Driver with
Operating System Versions 2000.4.3 and 2000.4.3a

http://www.cisco.com/en/US/products/hw/voiceapp/ps378/prod_installation_
guide09186a00806a476f.html

The above document "strongly suggests NFT" in Step6, the default is
Auto. 

I don't see anything that states Auto is unsupported by Cisco.  I would
think being able to use two NICS @  1000/Full would be better than one @
1000/Full -jason

In Auto mode connected to a Catalyst 3500/4500/6500 with default
settings Auto will select Transmit Load Balancing with Fault Tolerance
(TLB)  based upon the HP Whitepaper below. If you go into Control Panel
> Networks > Teaming Interface > Properties> HP Network Configuration
Utility > Select HP Network Team > Properties > Information it will
shows the actual "Current Mode" that Auto selected. I went into a
OS2000-4-4a-SR6 and found they were Transmit Load Balancing with Fault
Tolerance (TLB) and have been in production for several years with no
issues relating to the NIC teaming. IPCC Express application isn't
supported with NIC teaming and does have problems.

ftp://ftp.compaq.com/pub/products/servers/networking/TeamingWP.pdf
<javascript:openExternal('ftp://ftp.compaq.com/pub/products/servers/netw
orking/TeamingWP.pdf')> 

________________________________

From: Clouse, Chris [mailto:chris.clouse at berbee.com] 
Sent: Saturday, May 19, 2007 1:40 PM
To: Miller, Steve
Subject: RE: [cisco-voip] Re-enabled NIC on the Call Manager Has
Prevented Access to the System - Please Help!

The NIC's should not be teamed.  The only method that is supported is
Fault Tolerance Only.  Enable this mode, connect both cables, and try
again.

Christopher Clouse, CCNP CCDP CCVP MCP Network+

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Miller, Steve
Sent: Saturday, May 19, 2007 12:16 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Re-enabled NIC on the Call Manager Has Prevented
Access to the System - Please Help!

We have NICs in a Call Manager Subscriber in NY and one had been
disabled for a long time.  I was told by an expert engineer (who
actually was the architect or our system) that all of the settings for
the cards were correct and that there was probably a cable unplugged.
When I got to the site, there was a cable unplugged so I replaced the
cable and then re-enabled the card that corresponded to that port. At
that point, we rec'd errors in the event log that the system could not
communicate with the NTP server and now we cannot connect to the Call
Manager via RDP or by web interface programming.  All calls are being
processed and there seems to be no current user issue, but I need to
know if I should simply disable the connection again and troubleshoot or
if there is something in the teaming NIC card setup that needs to be
changed.  I have never messed with this before and I want to fix it, but
I don't want to interfere with the phone service.  I'm sure that this is
a simple issue, but I don't want a misstep.  Please let me know if you
are familiar with this.  Thank you!

Steve Miller
Telecom Engineer
Dickstein Shapiro LLP
1825 Eye Street NW | Washington, DC 20006
Tel (202) 420-3370 Fax (202)-330-5607
millers at dicksteinshapiro.com <mailto:millers at dicksteinshapiro.com>  

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