[c-nsp] vlan configuration for video system

Voll, Scott Scott.Voll at wesd.org
Fri Apr 13 10:37:55 EDT 2007


We run a quad of Cat 5e everywhere.  If you did the same thing, could
you just mark one port Video in each room it will be used in and put
each respected switch port in the video vlan? (lot of burned switch
ports but it could work)

Scott

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Dan
Sent: Friday, April 13, 2007 7:34 AM
To: Nick Griffin; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] vlan configuration for video system

Nick,

The problem is that it really needs to be mobile.  The video devices 
will be moved from room to room buy the users and plugged into wall 
jacks throughout the building.  I have looked into vmps, but those 
switches are out of the price range.  If you have any other suggestions 
please let me know.

Thanks,
Dan.


Nick Griffin wrote:
> What I'm saying is there are not a lot of ways to dynamically assign 
> those video devices/ports to certain vlans. You may look into VMPS, it

> can do vlan assignments based on mac address, but it requires a switch

> capable of being the server. Designate ports 1-X for video and put 
> them in your video vlan. Configure them for priority queuing and the 
> switch to "mls qos trust dscp".
>
> On 4/13/07, *Dan* <dan at technc.com <mailto:dan at technc.com>> wrote:
>
>     Thanks for your reply.
>
>     We are not implementing a voip system yet but if we do the phones
>     we buy
>     will support cdp.  So that would be fine.
>
>     So from what I gather, our video system has to be able to mark
>     packets
>     with a dscp value, which it does.  Separate Vlan's are
recommended.
>
>     So the only thing I need yet is a way for the switch to put a
video
>     device into the "video" vlan when its plugged in.  Is there a way
>     to do
>     this with acl's?  Would specified address help?
>
>     The quality across the wireless links has been taken care of.
That is
>     not a concern to me.
>
>     Thanks,
>     Dan.
>
>
>     Nick Griffin wrote:
>     > The only mechanism I know of on a switch to be able to determine
>     what
>     > vlan a port should be assigned to is the communication between a
>     cisco
>     > phone and switch utilizing CDP. There are of course other
external
>     > options, but thats more along the lines of security and Cisco
>     ACS. I
>     > wouldn't imagine the capability or the need to trunk to a video
>     > system. Typically the video systems will set DSCP values for
their
>     > control and video traffic which you would configured your switch
to
>     > "trust". If for some reason they wouldn't mark they data, you
would
>     > use an extended acl to identify the traffic and set the DSCP
value
>     > accordingly. Some systems also use RSVP to request the
reservation
>     > from the network. I would recommend separate voice video and
data
>     > vlans to allow the different levels of QoS required for each
>     > respective application. I would have a more of a concern with
being
>     > able to control quality across those wireless links if video
will be
>     > running across them.
>     >
>     > HTH,
>     >
>     > Nick Griffin, CCIE #17381
>     >
>     > On 4/12/07, *Dan Letkeman* < dan at technc.com
>     <mailto:dan at technc.com> <mailto:dan at technc.com
>     <mailto:dan at technc.com>>>
>     > wrote:
>     >
>     >     Thats what I was afraid of having to do.  Its polycom vsx
6000's
>     >     that we are
>     >     using.  They do have the capability of marking packets with
>     dscp
>     >     so I could
>     >     do that.  I guess without having vlan tagging on the polycom
>     >     equipment there
>     >     is no way for the switch to know what vlan that unit is
supposed
>     >     to be on?
>     >     Dan
>     >
>     >
>     >
>     >     -----Original Message-----
>     >
>     >     From: "Voll, Scott" <Scott.Voll at wesd.org
>     <mailto:Scott.Voll at wesd.org> <mailto: Scott.Voll at wesd.org
>     <mailto:Scott.Voll at wesd.org>>>
>     >
>     >     To: "Dan" <dan at technc.com <mailto:dan at technc.com>
>     <mailto:dan at technc.com <mailto:dan at technc.com>>>,
>     >     < cisco-nsp at puck.nether.net
>     <mailto:cisco-nsp at puck.nether.net>
>     <mailto:cisco-nsp at puck.nether.net
<mailto:cisco-nsp at puck.nether.net>>>
>     >
>     >     Date: Thu, 12 Apr 2007 14:54:53 -0700
>     >
>     >     Subject: RE: [c-nsp] vlan configuration for video system
>     >
>     >
>     >
>     >
>     >     What kind of video system?  Does it mark packets with DSCP /
IP
>     >     Prec by
>     >
>     >     default?
>     >
>     >
>     >
>     >     My guess is that if your going to make a separate video
>     vlan, you
>     >     will
>     >
>     >     have to assign the port to the video vlan manually.  ( more
>     Management
>     >
>     >     :-(
>     >
>     >
>     >
>     >     Scott
>     >
>     >
>     >
>     >     -----Original Message-----
>     >
>     >     From: cisco-nsp-bounces at puck.nether.net
>     <mailto:cisco-nsp-bounces at puck.nether.net>
>     >     <mailto:cisco-nsp-bounces at puck.nether.net
>     <mailto:cisco-nsp-bounces at puck.nether.net>>
>     >
>     >     [mailto:cisco-nsp-bounces at puck.nether.net
>     <mailto:cisco-nsp-bounces at puck.nether.net>
>     >     <mailto:cisco-nsp-bounces at puck.nether.net
>     <mailto:cisco-nsp-bounces at puck.nether.net>>] On Behalf Of Dan
>     >
>     >     Sent: Thursday, April 12, 2007 1:26 PM
>     >
>     >     To: cisco-nsp at puck.nether.net
>     <mailto:cisco-nsp at puck.nether.net> <mailto:
>     cisco-nsp at puck.nether.net <mailto:cisco-nsp at puck.nether.net>>
>     >
>     >     Subject: [c-nsp] vlan configuration for video system
>     >
>     >
>     >
>     >     Hello
>     >
>     >
>     >
>     >     We are implementing a video conferencing system on our
>     system and
>     >     I was
>     >
>     >     wondering  if anyone had recommendations for how to setup
the
>     >     vlan's for
>     >
>     >
>     >
>     >     data/video/voice.
>     >
>     >
>     >
>     >     We currently have one 3560 in each of the buildings and 2-10
>     2960's
>     >
>     >     behind the 3560.  All of the buildings are connected via
>     wireless
>     >
>     >     bridges.
>     >
>     >
>     >
>     >     Should I create a separate vlan for voice, video, data, and
>     management
>     >
>     >     in each building?
>     >
>     >
>     >
>     >     If I do create a separate vlan for each piece, how do the
>     switches
>     >     know
>     >
>     >     how to put say a video device on the video vlan when its
>     connected on
>     >
>     >     the switch?
>     >
>     >
>     >
>     >     If there are any other suggestions please let me know as I'm
>     open
>     >     to any
>     >
>     >
>     >
>     >     options so I can make this system easy to manage and work
well.
>     >
>     >
>     >
>     >     Thanks,
>     >
>     >     Dan.
>     >
>     >
>     >
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