RE: Cisco 7200 VXR with NPE-400 (was RE: The market must be coming back)
Based on our testing it looks like it all has to do with packet size. With small packets the throughput is very low. With what Cisco calls an internet mix of packet sizes throughput is much better. When doing max MTU packets, the throughput is of course the best. Also remember that Cisco as well as most other vendors advertise one way traffic only. If you have traffic on the return path, that counts against their numbers. So 40 pps one way is the same to them as 20 pps both ways. Interesting thread Thanks. -Original Message- From: Gary [mailto:[EMAIL PROTECTED]] Sent: Tuesday, May 21, 2002 12:12 AM To: Adam Rothschild Cc: [EMAIL PROTECTED] Subject: Cisco 7200 VXR with NPE-400 (was RE: The market must be coming back) Adam: [...] Sort of like buying a GbE interface for a 7200 (It only get's 10% throughput... Why waste the money, just buy FE!). How did the Foundry test lab arrive at those figures, and what substances were consumed at the time? I used a Cisco 7200 VXR with NPE-400. I used two different 7200's with the exact same results. Bidirectional throughput on 1GbE is a fraction above 10%. Unidirectional is a bit better (23%). Singl line ACL drops it to 8% (permit ip any any). FE performance doesn't start to drop below line rate until you put more than two in the box. I have a powerpoint if you'd like it, but it is not meant to slander Cisco, just to convince my customers NOT to put GbE in a 7200! It is not a GbE platform!
DirecPC Engineering Contact
Doesanybodyon the list workforDirecPCorhave anengineeringcontactatdirectPC.Ican'tbelievetheyaresellingnon-routableaddressesasanISP to the general public.Pleasereplyoffline. Heath Dieckert Network Engineer Dell US Internetworking Systems 512.723.5026
RE: DirecPC Engineering Contact
I can understand your lack of belief. Imagine my surprise when I got 9 emails in response to my question and 15 questions about how to replicate my sig. LOL!!! I've been laughing about that all day. Who says engineers can't have a sense of humor. If you met me somewhere besides work, or even at work, you probably wouldn't think I was an engineer. But I am. -Original Message- From: Rik Thomas [mailto:[EMAIL PROTECTED]] Sent: Monday, May 13, 2002 8:08 PM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: DirecPC Engineering Contact And I can't believe an engineer would know any better than to post that signature.
cRTP on WAN routers
Is anybody aware of a vendor that can supply a layer three device with the capability to pass 2000 or more simultaneous cRTP flows over ATM DS3 without running out of CPU? Each flow is 12Kbit/sec (with RTP header compression). Specifically I am talking about G729a traffic with a 30ms payload. Cisco's 7200 VXR NPE400 seems to be falling far short of our requirements and the larger chassis such as the 6500 doesn't support cRTP over ATM. I haven't tried the 7200 NSE-1 yet for this application because we have had tons of issues with those in an earlier unrelated deployment. Feel free to respond offline if necessary. Heath
Change Control
delurk Hey all, I am interested in your thoughts on best practices in network engineering/implementation change control for the large business organization. Specifically what have you found that works best and why? Interested in your thoughts on business partner notification, management involvement, peer review, scheduling, coordination, and approval? If this discussion is innapropriate for this forum feel free to notify me offline. Otherwise, I look forward to your feedback. Sincerely Heath Dieckert /delurk
