luminaire
Premium
join:2005-03-22
Oakville, ON
clubs:
| reply to rbbrick
Re: [Config] Cisco 26xx and Level 3 T1
You're going to experience higher ping times as you pass more traffic. The buffers will be filling up with the file transfer, and the ICMP traffic will be queued. The time the ping request/reply spends in the buffer increases latency. I'm not really sure why you have a 20ms latency to your DG with 0 traffic, but I've never used a T1 so I wouldn't know it's latency parameters.
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Luminaire
My Blog |
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sporkme
drop the crantini and move it, sister
Premium,MVM
join:2000-07-01
Netcong, NJ
| said by luminaire  :I'm not really sure why you have a 20ms latency to your DG with 0 traffic, but I've never used a T1 so I wouldn't know it's latency parameters. If it's a true point to point T1 and it's empty, it should be around 4-5ms, assuming it's terminating locally. Frame or ATM might be a bit higher. |
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rbba
@verizon.net
| reply to luminaire
Further investigation has yielded - Level 3 gateway router is in Los Angeles not San Jose(we are located in San Jose). This seems very odd to hop to LA and back to SJ then back to LA, Hywr is in Norcal near SJ. See these tracerts - your opinion is appreciated.
Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.
C:\Documents and Settings\Administrator.ATS>tracert 4.58.120.149
Tracing route to t1-2-1-0-9-3.edge1.LosAngeles8.Level3.net [4.58.120.149]
over a maximum of 30 hops:
1 3 ms tracert mail.absoluteturnkey.com
Tracing route to mail.absoluteturnkey.com [24.248.0.53]
over a maximum of 30 hops:
1 3 ms 1 ms 1 ms 192.168.1.7
2 2 ms 2 ms 1 ms 10.0.0.9
3 22 ms 21 ms 21 ms t1-2-1-0-9-3.edge1.LosAngeles8.Level3.net [4.58.
120.149]
4 31 ms 31 ms 33 ms so-7-1-0.c1.hywr.broadwing.net [216.140.0.73]
5 31 ms 33 ms 33 ms p5-0.a0.hywr.broadwing.net [216.140.3.106]
6 33 ms 34 ms 33 ms 216.140.3.230
7 33 ms 33 ms 33 ms te-8-3-73.car3.SanJose1.Level3.net [4.68.63.5]
8 36 ms 35 ms 35 ms vlan99.csw4.SanJose1.Level3.net [4.68.18.254]
9 33 ms 35 ms 35 ms ae-93-93.ebr3.SanJose1.Level3.net [4.69.134.237]
10 43 ms 53 ms 53 ms ae-2.ebr3.LosAngeles1.Level3.net [4.69.132.10]
11 54 ms 80 ms 67 ms ae-83-83.csw3.LosAngeles1.Level3.net [4.69.137.4
2]
12 54 ms 53 ms 53 ms ae-82-82.ebr2.LosAngeles1.Level3.net [4.69.137.2
5] |
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sporkme
drop the crantini and move it, sister
Premium,MVM
join:2000-07-01
Netcong, NJ
| That's a bit odd. We can all speculate, but what does L3 say? Given the distance, 20+ms (and 50+ms to LA!) seems a bit high. L3 owns Broadwing, but I don't think I've ever seen a Broadwing hop on my L3 circuit unless that was the destination was Broadwing.
Can you verify that there was minimal traffic on your circuit when you captured this? Do you have access to the router? |
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