Solved

Cisco 7200 VXR & Comcast Metro Ethernet Speed issues

Posted on 2012-03-18
4
942 Views
Last Modified: 2012-08-13
We moved to our new headquarters and have Comcast's Metro Ethernet installed.  

We noticed that we weren't getting our rated speeds in the server room, and plugging a laptop into the Comcast device directly, setting Flow Control to off, and the port negotiation to 100 Full Duplex, the laptop pulls a full 100/100 connection.  

We tried that same setup in the server room with the feed coming up from the Comcast equipment, and again, the line is delivering 100/100.  The minute we connect it to the Cisco 7200 VXR, speeds plummet to 1.5 Mbps on both the up and downstream.  

Our Cisco guy on-site says he's used the 7200 VXR with connections much faster than ours, so he's not sure why we're having such a hard time.  In every case, latency is phenomenal, often registering under 10ms to just about anywhere within three states, and not more than 25-30 to New York.  

Anyone have any suggestions?
0
Comment
Question by:USAVolleyball
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
4 Comments
 
LVL 57

Expert Comment

by:giltjr
ID: 37736028
Can you verify that duplex is correct?

If possible hard code both sides to 100 Mbps Full Duplex.
0
 

Author Comment

by:USAVolleyball
ID: 37736088
It doesn't matter if we match Comcast's connection - we had been set to 100 Full Duplex, and when we try Auto, we would get 100 Half Duplex.  

The Network is set up like this:

Comcast - > Cisco 7200 VXR -> Cisco ASA 5510 -> Dell Power Connect 6248 -> Network

We do have a DMZ switch running on a Cisco Catalyst 2960, which is connected directly to the DMZ interface on the ASA.
0
 

Accepted Solution

by:
USAVolleyball earned 0 total points
ID: 37736232
Turns out we had some bad cables between switches & routers, brand new box of cables rated for CAT 6!  Oy!
0
 

Author Closing Comment

by:USAVolleyball
ID: 37756305
Posted resolution
0

Featured Post

MS Dynamics Made Instantly Simpler

Make Your Microsoft Dynamics Investment Count  & Drastically Decrease Training Time by Providing Intuitive Step-By-Step WalkThru Tutorials.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Tired of waiting for your show or movie to load?  Are buffering issues a constant problem with your internet connection?  Check this article out to see if these simple adjustments are the solution for you.
In the world of WAN, QoS is a pretty important topic for most, if not all, networks. Some WAN technologies have QoS mechanisms built in, but others, such as some L2 WAN's, don't have QoS control in the provider cloud.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…

689 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question