Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements
Webcast-Catalyst9k
New Member

Pitfalls regarding 0k CIR with 56k FR

I'd like to present a business case for maintaining some level of CIR with a low bandwith <8k average client using SNA, Telnet and FTP over a 56k Frame Relay WAN.

What are some of the potential problems specifically with SNA traffic that could impact operations and any other pitfalls regarding 0k CIR overall?

Thank you very much!

1 REPLY
New Member

Re: Pitfalls regarding 0k CIR with 56k FR

Is this a transversing a public frame relay cloud? If it is then a 0k CIR is never a good idea. Speaking on a Frame Relay level only, all of your transmitted packets would be tagged discard eligible (DE) If your cloud providor has any kind of network congestion on their network your traffic will be dropped and forced to retansmit. I am currently on WCom's network and they are reporting upwards of 95% of DE dropped during peak business hours.

The impact of this would be different for different applications, and would depend on your providors over subscription rate.

A 0k CIR guarantees high packet loss, and extremely slow transmission speeds.

94
Views
5
Helpful
1
Replies
CreatePlease to create content