CDN Overload
Long story short, it looks like some CDNs are using a modified version of TCP (sometimes called FastTCP) to force content down the throats of end-users more aggressively than standard TCP would dictate. This results in a terrible experience for the end-user.
* Required
What CDN?
*
Akamai
Level 3
Microsoft
LimeLight
Other:
Required
What have you identified the traffic to be?
*
Your answer
What is the access network?
*
DSL
Active Ethernet
Mikrotik Wireless
Cambium PMP Wireless
Cambium ePMP Wireless
Ubiquiti Wireless
Other:
Required
Where is the rate limiting done?
*
Your answer
How is the rate limiting done?
*
Policing
Hardware\protocol limitations
PFIFO
RED
SFQ
PCQ
BFIFO
MQ PFIFO
Other:
Required
What is doing the rate limiting?
*
Your answer
What is the rate-limit set to?
*
Your answer
Upstream of the rate-limiter, what are you seeing for inbound traffic levels?
*
Your answer
One concurrent connection or many?
*
One
Many
How does other traffic behave when exceeding the rate limit (outside of the problem situations)?
*
Your answer
Where is NAT performed?
*
CPE
DSLAM, CMTS, AP, etc.
Router
Other:
Required
What is doing NAT (make\model)?
*
Your answer
Shared NAT or isolated to that customer?
*
Shared by multiple customers
Shared by all customers
Single customer
Other:
Required
Have you done a packet capture before and after the rate limiter? The NAT device?
*
Yes
No
Are there any bursting methods in use (customer can download at a rate above their normal plan for some time, dropping down to their plan speed when done)?
*
Yes
No
Would you be willing to send a filtered packet capture (only the frames that relate to this CDN) to the CDN if they want it?
*
Yes
No
Other:
E-mail address
Your answer
Name
Your answer
Submit
Page 1 of 1
Never submit passwords through Google Forms.
This content is neither created nor endorsed by Google.
Report Abuse
-
Terms of Service
-
Privacy Policy
Forms