deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE
 ·Verizon FIOS
 ·Comcast Workplace
 ·DSL EXTREME
| 851 for QoS/VoIP?
I'm posting this on behalf of ducatipaso  , as he's unable to post for some reason. Apologies if there is a mod queue for this forum, but I didn't see it mentioned in the forum FAQ/etc.
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Hi -
I find myself in this forum for the same reason that it seems many others have come here... tired of crappy consumer grade routers.
After what memory serves me as my 4th router, I started doing some homework and ended up with the Cisco 851. I approached this purchase with the mindset that cost was not so much of an object as was greater reliability, a richer featureset and QoS that WORKS.
According to this datasheet on cisco.com, the 851 router offers Qos features:
• Weighted Fair Queuing (WFQ)
• Policy-based routing (PBR)
• Per-VC queuing
• Per-VC traffic shaping
Now, here's my use model:
8/768 Comcast cable. I work from home over VPN (UDP tunnel) and use Vonage VoIP.
Whenever I use upstream intense applications, my VoIP outgoing is very adversely affected. I'd like to be able to dedicate enough upstream bandwidth so that I can run the Vonage quality on medium or high. I don't care what the impact is to my web use as long as the voice stays clear. To complicate things, I am often VPN'd into work, so the traffic saturating my upstream is effectively UDP packets over the VPN tunnel, even though the traffic over the VPN is TCP (e.g. sending a large email or using desktop collaboration utilities).
Have I purchased the wrong router? I installed the SDM and when I hit the QoS button, it tells me that my IOS version doesn't support QoS; however the datasheet clearly states that the unit DOES support QoS.
Is there something I'm missing here? Do I need to upgrade my IOS? Can I do QoS tweaks on the CLI (I'm willing to learn). Do I need to switch to the 871? I'd really rather not have to go an additional 50% price up but I am convinced that this is the type of product that I am looking for. I have several nodes in the house, and 2 VoIP lines. I want to make this work and am willing to spend the cash and the time to manage my home's infrastructure to a reliable, stable state.
Thanks. Any input or help is appreciated.
dp
--
"Hey honey! Do you think KFC's still open?" |
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deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE
·Verizon FIOS
·Comcast Workplace
·DSL EXTREME
| It seems my friend was using the Submit a new forum topic link on the left of the page under "Forum Links, LOCAL:", but I used the "New Topic" button in the top right of the forum page.
Can a mode look into the broken link? Thanks!
--
"Hey honey! Do you think KFC's still open?" |
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ducatipaso
join:2002-03-04
Lake Oswego, OR | reply to deblin
deblin: thanks for posting for me. I can hit reply and things work fine. Weird.
Anyhow, if anyone can help me out here with this router (which seems to be an excellent piece of equipment) I'd really appreciate it. Thanks! |
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rickiac
join:2003-06-10
Jackson, NJ
·Cablevision
| reply to deblin
I just went thru the same thing, tired of consumer grade routers! I just purchased Cisco 871 (CISCO871-SEC-K9) w/Advanced IP firmware. I think this is the router/firmware you may want to look at.
I have had nothing but problems w/VOIP (Vonage)lines going down every time I had more then one PC active on the network (thanks DLINK!!) I just switched to the 871 1 week ago and set up QOS and now I can run 4 PC's and TiVo download at the same time and sill be on the phone. $560.00, expensive, but worth it so far.
From my research only the 871 has options for different firmware. |
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ducatipaso
join:2002-03-04
Lake Oswego, OR
| well after additional homework and tries at various QoS on the CLI, it turns out that the 851 does not have advanced enough QoS to satisfy my needs. I have gone ahead and ordered the 871 which advertises class based QoS and should have the full advanced QoS configuration capabilities in the SDM GUI. more to follow... |
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ducatipaso
join:2002-03-04
Lake Oswego, OR
| oh yeah this is definitely the unit. after massaging a config found on a vonage forum, I was able to do:
2 90kbps calls
1 5MB file upload during a netmeeting over VPN
and both calls maintained 100% clarity.
I can post my config if anyone's interested, but with the lack of replies, I dont think many folks are willing to spend the dough on this unit. |
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Innuendo
Premium
join:2002-12-20
| Definitely post the working config if you would, please.
What nobody needs today somebody may need next week or next month. Posting your config now ensures that if someone needs this information in the future it will be here & turn up in search results. |
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ducatipaso
join:2002-03-04
Lake Oswego, OR | I'll try to remember to post what I added tonight |
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timog
join:2006-01-08
Richboro, PA
edit:
January 24th, @03:34PM
| I had the same problem before I implemented QoS on my 2600 router. I have 15/2 FIOS and Vonage call quality sucked before I turned a few knobs on the router.
!
class-map match-all voice-traffic
match ip rtp 10000 10000
!
!
policy-map voice-policy
class voice-traffic
priority 200
class class-default
fair-queue
!
policy-map shaper
class class-default
shape average 2000000 200000 0
service-policy voice-policy
!
!
interface Virtual-Template1
service-policy output shaper
! |
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