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<DIV dir=ltr align=left><SPAN class=267522317-13122007><FONT face=Arial
color=#0000ff size=2>There as a WAN in between.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=267522317-13122007><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=267522317-13122007><FONT face=Arial
color=#0000ff size=2>We have about 600 users in the building spread across 6
floors and 4 VLANs. Each VLAN is a /24 subnet and consists of 4x3560-48
switches cabled back via copper GBIC's to the 6509 core switches. We use
spanning tree costs to send traffic in the data VLAN to core switch 1 and Voice
vlan to core switch 2.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=267522317-13122007><FONT face=Arial
color=#0000ff size=2>The two core switches are connected via a 4Gb EtherChannel,
and both have fibre WAN connections through the interfaces on the SUP cards out
to the WAN. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=267522317-13122007><FONT face=Arial
color=#0000ff size=2>The fault has so far only occurred on one VLAN.
</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=267522317-13122007><FONT face=Arial
color=#0000ff size=2>We have about 12 other sites that also connect over the WAN
to the same Call Manager and none of these have experienced any similar faults.
It is quite literally limited to one VLAN within one building.
</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=267522317-13122007><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=267522317-13122007><FONT face=Arial
color=#0000ff size=2>Thanks Matt</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> Leonardo D'Urso [mailto:l.durso@gmail.com]
<BR><B>Sent:</B> Thursday, 13 December 2007 21:58<BR><B>To:</B> Matt
OLIVER<BR><B>Cc:</B> cisco-voip@puck.nether.net<BR><B>Subject:</B> Re:
[cisco-voip] Phones displaying CM Down during calls.<BR></FONT><BR></DIV>
<DIV></DIV>Hi Matt<BR><BR>the phones and the callmanager servers are in the same
building or there is a WAN connection
between?<BR><BR>regards<BR>Leonardo<BR><BR><BR>
<DIV><SPAN class=gmail_quote>2007/12/13, Matt OLIVER <<A
href="mailto:Matt.Oliver@team.telstraclear.co.nz">
Matt.Oliver@team.telstraclear.co.nz</A>>:</SPAN>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">
<DIV>
<DIV><FONT face=Arial size=2><SPAN>Hi there, </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN>I have a number of phones (20 out of
192 in one VLAN) that are coming up with CM Down during calls. I know
that this is caused through the phone being unable to talk to the call manager
via skinny, however we are having no phones rehome to other Call
Managers, and in the particular building we have 600+ users and this is only
affecting 20 users all of whom are in the same VLAN.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN>The VLAN configs are all the same and
deployed in the same manner across 8500 phones. There are 4x 3560-48 switches
in the affected VLAN. </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN>These connect via GBIC uplink ports to
redundant 6509 core switches.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN>We are seeing no errors on the WAN, or
interfaces, in fact the only please the error is seen is on the phones
themselves, and it is intermittent. The IOS version is 12.2(25)sec which again
has been deployed on over 400 of these in the network.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN>It seems link only skinny is affected, the
users are not complaining of data errors and the calls are not being cut off,
although the caller is reporting hearing a loud noise when it
happens.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN>I have seen a few other threads that
mention a similar error, however I cant seem to find any answers on
this. Any ideas would be greatly appreciated.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN>Regards Matt</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>
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