[NANOG] Comcast latency

Here, in New England, I normally see 20% packet loss between Comcast and Level3 in NewYork using MTR. It has been as high as 60% in the past so this is an improvement.

-Tim Thompson

Tim Thompson wrote:

  

Has anyone else noticed a significant increase in latency within
Comcast's network?
    
Here, in New England, I normally see 20% packet loss between Comcast and Level3 in NewYork using MTR. It has been as high as 60% in the past so this is an improvement.

-Tim Thompson
  

Remember that a number of ISP's 'core' routers are going to have ICMP rate limits in place when one of their interfaces is the target. While you may see high packet loss across an ISP link, unless you are getting similar numbers from all hops past that point you aren't looking at real packet loss, since the transit packets are getting through fine. It's just the routers themselves that are ignoring requests or discarding responses in favor of pushing routed packets.