[cisco-voip] Jabber/CIPC and QoS

Tue Jan 3 22:14:31 EST 2017

I saw a CiscoLive! session recently that seemed to recommend the ports and
access-lists approach. The idea is that you can now specify separate port
ranges for audio and video in SIP Profile. The session goes quite in depth
and is worth the watch:

BRKCOL-2616 - QoS Strategies and Smart Media Techniques for Collaboration
Deployments (2016 Berlin) - 2 Hours

On Tue, Jan 3, 2017 at 9:49 PM, Ryan Huff <ryanhuff at outlook.com> wrote:

> I see; while this is by no means a complete solution, it may help. I'm
> assuming Cisco based soft phones (CIPC, CSF, BOT, TAB ... etc).
>
> You may try Trusted Relay Points (set in the device level configuration).
> This does rely and depend on your media resource architecture and design;
> i.e. you'll need to have media resources that support TRP available.
>
> Using TRP on the device config for a soft phone will cause CUCM to
> dynamically insert an MTP in the call flow which will allow for adherence
> to QOS trust policies and offer a predetermined network path for call flows
> in an otherwise untrusted network (presumably, the data network).
>
> -Ryan
>
>
>
> Sent from my iPhone
> On Jan 3, 2017, at 9:30 PM, Ben Amick <bamick at HumanArc.com> wrote:
>
> Only for softphones. Currently most of our servers live on the same LAN as
> end users, so yeah. Hardphones have their own VLAN so its not as bad. In
> the future it won’t be that way but for the time being it is.
>
>
>
> *Ben Amick*
>
> Telecom Analyst
>
>
>
> *From:* Ryan Huff [mailto:ryanhuff at outlook.com <ryanhuff at outlook.com>]
> *Sent:* Tuesday, January 03, 2017 9:18 PM
> *To:* Ben Amick <bamick at HumanArc.com>
> *Cc:* NateCCIE <nateccie at gmail.com>; Cisco VoIP Group <
> cisco-voip at puck.nether.net>
> *Subject:* Re: [cisco-voip] Jabber/CIPC and QoS
>
>
>
> Ben,
>
>
>
> By flat network; I am to assume that there is no layer 2 partition between
> rtp/signaling and general data traffic?
>
>
> On Jan 3, 2017, at 9:15 PM, Ben Amick <bamick at HumanArc.com> wrote:
>
> Yeah, I have the luck of having MPLS right now, and I don’t see us going
> iWAN for a while for various reasons. QoS on the WAN right now even isn’t
> my issue, it’s QoS on the LAN. Right now we have a relatively flat network,
> and certain segments of our troupe **cough**developers**cough** seems to
> have made our internal traffic ugly, to the point that I may have to do an
> analysis of it, as we’re having just random periods here and there where
> calls just have horrible quality, of the type you normally see fixed by QoS
>
>
>
> *Ben Amick*
>
> Telecom Analyst
>
>
>
> *From:* Ryan Huff [mailto:ryanhuff at outlook.com <ryanhuff at outlook.com>]
> *Sent:* Tuesday, January 03, 2017 8:40 PM
> *To:* NateCCIE <nateccie at gmail.com>
> *Cc:* Ben Amick <bamick at HumanArc.com>; Cisco VoIP Group <
> cisco-voip at puck.nether.net>
> *Subject:* Re: [cisco-voip] Jabber/CIPC and QoS
>
>
>
> It's a shame really ... MPLS is far superior IMO, for many reasons. Call
> it iWAN, DMVPN, AutoVPN .... whatever, it is still as Nate says, public
> Internet.
>
>
>
> Try getting a 30 or 60 minute SLA with escalation after 15 minutes from a
> public Comcast or Time Warner/Charter package.
>
>
> On Jan 3, 2017, at 7:53 PM, NateCCIE <nateccie at gmail.com> wrote:
>
> Or take the most approach of do nothing.
>
>
>
> My personal favorite is to use codecs where QoS matters less, like iLBC,
> OPUS, etc.
>
>
>
> So many business are getting rid of the QoS capable WAN and just doing
> VPNs, even if they have fancy names that make it sound better than public
> internet.
>
> Sent from my iPhone
>
>
> On Jan 3, 2017, at 2:25 PM, Ben Amick <bamick at HumanArc.com> wrote:
>
> So, I know this is an age old question that’s debated, but I’ve been
> wondering if anyone here has a perspective here in regards to QoS for
> softphones. Obviously, with hardphones, you usually partition a separate
> VLAN with AutoQoS/DSCP tags, but that isn’t applicable with softphones.
>
>
>
> I’ve heard of three different options in the past, neither of which seem
> to be very simple to deploy, but all seem to be Jabber-centric.
>
> 1.      Configuring windows to perform DSCP tagging, and do DSCP QoS on
> the switches they are connected to, as well as trusting the device.
> Problems: Requires users to be local admins, openings for abuse and network
> impact due to blind PC trust.
>
> 2.      Configuring your switches with an access list that recognizes the
> ports Jabber does outbound to attach DSCP tags to them. Problems: Other
> programs could theoretically use those ports
>
> 3.      Installing Medianet services on all jabber clients; Configure all
> switches for medianet tagging. Problem: (I think?) Requires newer switches
> to use, maybe needs an additional server (I vaguely remember possibly
> needing prime collab?)?
>
>
>
> Maybe I’m missing some things, but what approach have you guys taken for
> softphone/Jabber QoS? And on top of that, what options are there for CIPC
> (I know there’s the auto qos trust cisco-softphone for cisco switches, but
> I don’t believe there’s a solution other than #1 for non-cisco switches)?
>
>
>
> *Ben Amick*
>
> Telecom Analyst
>
>
>
>
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