[26883] in resnet
Re: Firewall drops video conferencing packets
daemon@ATHENA.MIT.EDU (William Constantakos)
Wed Oct 19 11:14:09 2011
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Date: Wed, 19 Oct 2011 11:11:30 -0400
Reply-To: Resnet Forum <RESNET-L@listserv.nd.edu>
From: William Constantakos <wcon@conncoll.edu>
To: RESNET-L@listserv.nd.edu
In-Reply-To: <1971DADBD6BB534298F22483F7D960F605AEAA4B@exchange01.anselm.edu>
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Had to this issue, it was the MTU
On Wed, Oct 19, 2011 at 11:08 AM, Kathleen Brown <kbrown@anselm.edu> wrote:
> Hello Christopher****
>
> ** **
>
> You've probably figured your issue out by this point (I was just in here
> cleaning up this folder, and saw your posting) but if you haven't feel free
> to answer this or email me offline. We have a videoconferencing issue going
> on too. A Lifesize system is telling us it has a lot of dropped packets,
> but we don't see verification anyplace else, and we've spent lots of time
> with our firewall vendor (Juniper) to no avail. Image quality continues to
> be poor on the videoconferencing. ****
>
> ** **
>
> ** **
>
> Kathleen Brown, Network Support Specialist****
>
> CompTIA Network+ Certified****
>
> Network Services - Office of Information Technology****
>
> Saint Anselm College ****
>
> 100 St. Anselm Drive****
>
> Manchester, NH 03102****
>
> (603) 641-7128****
>
> kbrown@anselm.edu ****
>
> ****
>
> *P* Please consider the environment before printing this email.****
> ------------------------------
>
> ** **
>
> *From:* Resnet Forum [mailto:RESNET-L@LISTSERV.ND.EDU] *On Behalf Of *Christopher
> Hickernell
> *Sent:* Tuesday, September 06, 2011 10:04 AM
> *To:* RESNET-L@LISTSERV.ND.EDU
> *Subject:* Firewall drops video conferencing packets****
>
> ** **
>
> Has anyone else experienced a problem with video conferencing traffic
> crossing the firewall? We have various models of Polycom units (HDX 8000
> HD, HDX 9004, VS4000) that have trouble when they have to cross our Cisco
> ASA to connect to another unit. A connection is always established, but
> sometimes video and audio do not work, sometimes content cannot be sent,
> etc.****
>
> ** **
>
> Monitoring the firewall logs I observed this error:****
>
> ** **
>
> Deny IP from Montgomery-416.itv.clarion.edu to Still-111, IP options:
> "Router Alert"****
>
> ** **
>
> * *
>
> *Christopher* Hickernell, CCNA, MCSE****
>
> *Network Support Specialist, ResNet Manager*
>
> Clarion University of Pennsylvania**
>
> Center for Computing Services**
>
> G-13 Still Hall, Clarion, PA 16214****
>
> chickernell@clarion.edu | 814.393.2218****
>
> ** **
>
> ** **
>
> ___________________________________________________ You are subscribed to
> the ResNet-L mailing list. ****
>
> To subscribe, unsubscribe or search the archives, go to
> http://LISTSERV.ND.EDU/archives/resnet-l.html___________________________________________________
> ****
> ___________________________________________________ You are subscribed to
> the ResNet-L mailing list.
>
> To subscribe, unsubscribe or search the archives, go to
> http://LISTSERV.ND.EDU/archives/resnet-l.html___________________________________________________
>
--
William Constantakos
Systems Administrator
Connecticut College
270 Mohegan Av.
New London, Ct 06320
___________________________________________________
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Had to this issue, it was the MTU<br><br><div class=3D"gmail_quote">On Wed,=
Oct 19, 2011 at 11:08 AM, Kathleen Brown <span dir=3D"ltr"><<a href=3D"=
mailto:kbrown@anselm.edu">kbrown@anselm.edu</a>></span> wrote:<br><block=
quote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc=
solid;padding-left:1ex;">
<div link=3D"blue" vlink=3D"purple" lang=3D"EN-US"><div><p class=3D"MsoNorm=
al"><span style=3D"color:#1F497D">Hello Christopher<u></u><u></u></span></p=
><p class=3D"MsoNormal"><span style=3D"color:#1F497D"><u></u>=A0<u></u></sp=
an></p><p class=3D"MsoNormal">
<span style=3D"color:#1F497D">You've probably figured your issue out by=
this point (I was just in here cleaning up this folder, and saw your posti=
ng) but if you haven't feel free to answer this or email me offline.=A0=
We have a videoconferencing issue going on too.=A0 A Lifesize system is te=
lling us it has a lot of dropped packets, but we don't see verification=
anyplace else, and we've spent lots of time with our firewall vendor (=
Juniper) to no avail.=A0 Image quality continues to be poor on the videocon=
ferencing.=A0 <u></u><u></u></span></p>
<div><p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;color:navy"><u>=
</u>=A0<u></u></span></p><p class=3D"MsoNormal"><span style=3D"font-size:10=
.0pt;color:navy"><u></u>=A0<u></u></span></p><p class=3D"MsoNormal"><span s=
tyle=3D"font-size:10.0pt;color:navy">Kathleen Brown, Network Support Specia=
list</span><span style=3D"color:#1F497D"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;color:navy">CompTIA =
Network+ Certified</span><span style=3D"color:#1F497D"><u></u><u></u></span=
></p><p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;color:navy">Net=
work Services - Office of Information Technology</span><span style=3D"color=
:#1F497D"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;color:navy">Saint An=
selm College </span><span style=3D"color:#1F497D"><u></u><u></u></span></p>=
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;color:navy">100 St. =
Anselm Drive</span><span style=3D"color:#1F497D"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;color:navy">Manchest=
er, NH 03102</span><span style=3D"color:#1F497D"><u></u><u></u></span></p><=
p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;color:navy"><a href=
=3D"tel:%28603%29%20641-7128" value=3D"+16036417128" target=3D"_blank">(603=
) 641-7128</a></span><span style=3D"color:#1F497D"><u></u><u></u></span></p=
>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;color:navy"><a href=
=3D"mailto:kbrown@anselm.edu" target=3D"_blank"><span style=3D"color:navy">=
kbrown@anselm.edu</span></a></span><span style=3D"color:navy">=A0</span><sp=
an style=3D"color:#1F497D"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">=A0<u></u><u></u></spa=
n></p><p class=3D"MsoNormal"><b><span style=3D"font-size:14.0pt;font-family=
:Webdings;color:#99CC00">P</span></b><span style=3D"font-size:8.0pt;color:#=
99CC00"> </span><span style=3D"font-size:8.0pt;font-family:"Bookman Ol=
d Style","serif";color:gray">Please consider the environment=
before printing this email.</span><span style=3D"color:#1F497D"><u></u><u>=
</u></span></p>
<div class=3D"MsoNormal" style=3D"text-align:center" align=3D"center"><span=
style=3D"font-family:"Times New Roman","serif";color:#=
1F497D"><hr align=3D"center" size=3D"2" width=3D"100%"></span></div></div><=
p class=3D"MsoNormal">
<span style=3D"color:#1F497D"><u></u>=A0<u></u></span></p><div><div style=
=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in"><=
p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt">From:</span></b><=
span style=3D"font-size:10.0pt"> Resnet Forum [mailto:<a href=3D"mailto:RES=
NET-L@LISTSERV.ND.EDU" target=3D"_blank">RESNET-L@LISTSERV.ND.EDU</a>] <b>O=
n Behalf Of </b>Christopher Hickernell<br>
<b>Sent:</b> Tuesday, September 06, 2011 10:04 AM<br><b>To:</b> <a href=3D"=
mailto:RESNET-L@LISTSERV.ND.EDU" target=3D"_blank">RESNET-L@LISTSERV.ND.EDU=
</a><br><b>Subject:</b> Firewall drops video conferencing packets<u></u><u>=
</u></span></p>
</div></div><p class=3D"MsoNormal"><u></u>=A0<u></u></p><p class=3D"MsoNorm=
al">Has anyone else experienced a problem with video conferencing traffic c=
rossing the firewall?=A0 We have various models of Polycom units (HDX 8000 =
HD, HDX 9004, VS4000) that have trouble when they have to cross our Cisco A=
SA to connect to another unit.=A0 A connection is always established, but s=
ometimes video and audio do not work, sometimes content cannot be sent, etc=
.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=A0<u></u></p><p class=3D"MsoNormal">Monitori=
ng the firewall logs I observed this error:<u></u><u></u></p><p class=3D"Ms=
oNormal"><u></u>=A0<u></u></p><p class=3D"MsoNormal">Deny IP from <a href=
=3D"http://Montgomery-416.itv.clarion.edu" target=3D"_blank">Montgomery-416=
.itv.clarion.edu</a> to Still-111, IP options: "Router Alert"<u><=
/u><u></u></p>
<p class=3D"MsoNormal"><u></u>=A0<u></u></p><p class=3D"MsoNormal"><b><u></=
u>=A0<u></u></b></p><p class=3D"MsoNormal"><b>Christopher</b> Hickernell, C=
CNA, MCSE<u></u><u></u></p><p class=3D"MsoNormal"><i>Network Support Specia=
list, ResNet Manager<u></u><u></u></i></p>
<p class=3D"MsoNormal">Clarion University of Pennsylvania<i><u></u><u></u><=
/i></p><p class=3D"MsoNormal">Center for Computing Services<i><u></u><u></u=
></i></p><p class=3D"MsoNormal">G-13 Still Hall, Clarion, PA 16214<u></u><u=
></u></p>
<p class=3D"MsoNormal"><a href=3D"mailto:chickernell@clarion.edu" target=3D=
"_blank">chickernell@clarion.edu</a> | <a href=3D"tel:814.393.2218" value=
=3D"+18143932218" target=3D"_blank">814.393.2218</a><u></u><u></u></p><p cl=
ass=3D"MsoNormal">
<u></u>=A0<u></u></p><p class=3D"MsoNormal"><u></u>=A0<u></u></p><p class=
=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:"Times New =
Roman","serif"">____________________________________________=
_______ You are subscribed to the ResNet-L mailing list. <u></u><u></u></sp=
an></p>
<p>To subscribe, unsubscribe or search the archives, go to <a href=3D"http:=
//LISTSERV.ND.EDU/archives/resnet-l.html" target=3D"_blank">http://LISTSERV=
.ND.EDU/archives/resnet-l.html</a> ________________________________________=
___________ <u></u><u></u></p>
</div></div>
___________________________________________________
You are subscribed to the ResNet-L mailing list.
<p>
To subscribe, unsubscribe or search the archives,
go to <a href=3D"http://LISTSERV.ND.EDU/archives/resnet-l.html" target=3D"_=
blank">http://LISTSERV.ND.EDU/archives/resnet-l.html</a>
___________________________________________________</p></blockquote></div><=
br><br clear=3D"all"><br>-- <br>William Constantakos<div>Systems Administra=
tor</div><div>Connecticut College</div><div>270 Mohegan Av.</div><div>New L=
ondon, Ct 06320</div>
<div><br></div><br>
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<p>
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