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Hardware Forum / Networking / Cisco / July 2004Which Router T3/E3
Im looking to drop in a 20 Meg fractional DS3 I have choice of 7204VXR router or Cisco 3745 router. I like to also run BGP and use a pair of T1. I worked with 3600 before but not the 72xx series. Any suggestion ? > Im looking to drop in a 20 Meg fractional DS3 > I have choice of 7204VXR router or Cisco 3745 router. > I like to also run BGP and use a pair of T1. > I worked with 3600 before but not the 72xx series. Any suggestion ? 3745 may be up to the task for this. Any plans of expansion?  Signaturehsb "Somehow I imagined this experience would be more rewarding" Calvin *************** USE ROT13 TO SEE MY EMAIL ADDRESS **************** ******************************************************************** Due to the volume of email that I receive, I may not not be able to reply to emails sent to my account. Please post a followup instead. ******************************************************************** Both will work fine. The 3745 will handle two DS3 interfaces. The 3725 will only handle one (Cisco marketing says this). The 7200VXR will handle many more, depending on which NPE module. I'd personally go with the 3745 as its a newer model, and more IOS options may be available for it in the future(??) -Robert >Im looking to drop in a 20 Meg fractional DS3 > [quoted text clipped - 3 lines] > >I worked with 3600 before but not the 72xx series. Any suggestion ? Great.. I saw some of the EOL for 7200s... made me worried a little.. Price for 7204vxr came out to be 1-2k lower with the 225 engine.. waiting for the 400 engine.. I posed that question also.. to my boss.. do you want to get multiple ds3 or single ? no response yet.. glad to know i can do with either.. I may get the 7204vxr with dual t3 and dual t1.. thanks. I rather have 3745 also but these guy didn't really like my idea.. so its not my money > The 7200VXR will handle many more, depending on which NPE module. > > I'd personally go with the 3745 as its a newer model, and more IOS > options may be available for it in the future(??) >Great.. I saw some of the EOL for 7200s... made me worried a little.. > [quoted text clipped - 9 lines] >> I'd personally go with the 3745 as its a newer model, and more IOS >> options may be available for it in the future(??) I would not use a 3745 if you're planning on expansion. Though Cisco claims a 3745 can handle two DS3s, our internal lab testing says otherwise. In fact, we've found that (depending on packet size, routing protocols used, and other factors) a 3745 can't quite drive a DS3 to full speed. In practice I've implemented a single DS3 and it works OK, but it makes me nervous. I would absolutely recommend the 72xxVXR with an NPE-400. --me >I would not use a 3745 if you're planning on expansion. Though Cisco >claims a 3745 can handle two DS3s, our internal lab testing says >otherwise. In fact, we've found that (depending on packet size, >routing protocols used, and other factors) a 3745 can't quite drive a >DS3 to full speed. In practice I've implemented a single DS3 and it >works OK, but it makes me nervous. Really? I am putting in a 3725 with a single DS3 here shortly. I was under the impression it could handle one just fine. I guess I'll find out. -Robert [Rob] | Really? I am putting in a 3725 with a single DS3 here shortly. I was | under the impression it could handle one just fine. I guess I'll find | out. As always - the difference between X Mbps of normal traffic and the same amount of minimum-sized DoS traffic can be significant. Steinar Haug, Nethelp consulting, sthaug@nethelp.no >>I would not use a 3745 if you're planning on expansion. Though Cisco >>claims a 3745 can handle two DS3s, our internal lab testing says [quoted text clipped - 6 lines] >under the impression it could handle one just fine. I guess I'll find >out. The 3725 can do over 200Mbps with full-sized packets and no performance-reducing features enabled. But things change as packet size decreases and processing-intensive features such as ACLs and NAT are enabled. The performance you'll get is completely dependant on these factors. -Terry >>I would not use a 3745 if you're planning on expansion. Though Cisco >>claims a 3745 can handle two DS3s, our internal lab testing says [quoted text clipped - 6 lines] >under the impression it could handle one just fine. I guess I'll find >out. Every situation is different, but when we stressed them in our labs they did not hold up. Again, we're running BGP, using them in large networks with potentially large routing tables, often doing ISDN, GRE tunnels, NAT, whatever. Also, are you doing ATM DS3 or something else? I suppose I should have prefixed my comments...we use exclusively ATM at >T1. Can't remember the numbers for the 3275, but we found the 3745 topped out around 41 megabits. Not shabby, but still. --chris >Also, are you doing ATM DS3 or something else? I suppose I should >have prefixed my comments...we use exclusively ATM at >T1. [quoted text clipped - 3 lines] > >--chris It's the standard clear channel E3/T3 interface for the 3700 series. Not ATM. I hope you're wrong, no offense. It may be my job on the line if it can't do 35Mb of a DS3. Damn Cisco marketing. :( Robert [snip] > Every situation is different, but when we stressed them in our labs > they did not hold up. Again, we're running BGP, using them in large [quoted text clipped - 6 lines] > Can't remember the numbers for the 3275, but we found the 3745 topped > out around 41 megabits. Not shabby, but still. Adding GRE to the mix can be a deal breaker. Signaturehsb "Somehow I imagined this experience would be more rewarding" Calvin *************** USE ROT13 TO SEE MY EMAIL ADDRESS **************** ******************************************************************** Due to the volume of email that I receive, I may not not be able to reply to emails sent to my account. Please post a followup instead. ******************************************************************** I would not buy less than a NPE-400 today, IMO. >Great.. I saw some of the EOL for 7200s... made me worried a little.. > [quoted text clipped - 9 lines] >> I'd personally go with the 3745 as its a newer model, and more IOS >> options may be available for it in the future(??) > I would not buy less than a NPE-400 today, IMO. Or take it a step further and get the GE's. Built in GE, no BW points, life is better. Signaturehsb "Somehow I imagined this experience would be more rewarding" Calvin *************** USE ROT13 TO SEE MY EMAIL ADDRESS **************** ******************************************************************** Due to the volume of email that I receive, I may not not be able to reply to emails sent to my account. Please post a followup instead. ******************************************************************** |
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