What happened to Cogent?

Mailman List Mirror (Read Only)
1

About 20mins ago my connection to Cogent in Cleveland just went totally nuts. I can't even get to www.cogentco.com over their circuit:

                                                    Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. v129.l3sw1.n2net.net 0.0% 1 1.1 1.1 1.1 1.1 0.0
2. v401.core1.n2net.net 0.0% 1 0.4 0.4 0.4 0.4 0.0
3. fa0-2.na01.b002352-3.cle01.atlas.cogentco.com 0.0% 1 1.5 1.5 1.5 1.5 0.0
4. g1-0-3501.core01.cle01.atlas.cogentco.com 0.0% 1 1.6 1.6 1.6 1.6 0.0
5. p6-0.core01.buf02.atlas.cogentco.com 0.0% 1 5.5 5.5 5.5 5.5 0.0
6. p6-0.core01.cle01.atlas.cogentco.com 0.0% 1 6.1 6.1 6.1 6.1 0.0
7. p6-0.core01.buf02.atlas.cogentco.com 0.0% 1 10.5 10.5 10.5 10.5 0.0
8. p6-0.core01.cle01.atlas.cogentco.com 0.0% 1 9.9 9.9 9.9 9.9 0.0
9. p6-0.core01.buf02.atlas.cogentco.com 0.0% 1 14.7 14.7 14.7 14.7 0.0
10. p6-0.core01.cle01.atlas.cogentco.com 0.0% 1 14.7 14.7 14.7 14.7 0.0
11. p6-0.core01.buf02.atlas.cogentco.com 0.0% 1 19.1 19.1 19.1 19.1 0.0

2

I'm guessing a routing loop and a bunch of red lights in their NOC. I'm sure they are working on it.

I never understand why people post traceroute on NANOG and expect things to magically get fixed. Did you call Cogent?

3

I wasn't expecting things to get fixed by posting on Nanog. I was hoping to get information from someone who had maybe already called Cogent since their phones were slammed when i tried to call.

Matthew Crocker wrote:

4

There are rumours of depeering from them....

Route-views shows much instability to their major peers eg 2914, 12956, 701 etc

I have a couple of customer complaints and they are unreachable....

Perhaps they depeered, overloaded their net and turned it off and on again?

Steve

5

We are seeing the same thing in two of our POPS, San Francisco and Dallas.
Seems to be very sporadic. When we contacted Cogent, they advised that they
were aware of some "issues" but had no further information.

6

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David Coulson wrote:

About 20mins ago my connection to Cogent in Cleveland just went totally
nuts. I can't even get to www.cogentco.com over their circuit:

                                                   Packets
Pings
Host Loss% Snt Last
Avg Best Wrst StDev
1. v129.l3sw1.n2net.net 0.0% 1 1.1
1.1 1.1 1.1 0.0
2. v401.core1.n2net.net 0.0% 1 0.4
0.4 0.4 0.4 0.0
3. fa0-2.na01.b002352-3.cle01.atlas.cogentco.com 0.0% 1 1.5
1.5 1.5 1.5 0.0
4. g1-0-3501.core01.cle01.atlas.cogentco.com 0.0% 1 1.6
1.6 1.6 1.6 0.0
5. p6-0.core01.buf02.atlas.cogentco.com 0.0% 1 5.5
5.5 5.5 5.5 0.0
6. p6-0.core01.cle01.atlas.cogentco.com 0.0% 1 6.1
6.1 6.1 6.1 0.0
7. p6-0.core01.buf02.atlas.cogentco.com 0.0% 1 10.5
10.5 10.5 10.5 0.0
8. p6-0.core01.cle01.atlas.cogentco.com 0.0% 1 9.9
9.9 9.9 9.9 0.0
9. p6-0.core01.buf02.atlas.cogentco.com 0.0% 1 14.7
14.7 14.7 14.7 0.0
10. p6-0.core01.cle01.atlas.cogentco.com 0.0% 1 14.7
14.7 14.7 14.7 0.0
11. p6-0.core01.buf02.atlas.cogentco.com 0.0% 1 19.1
19.1 19.1 19.1 0.0

- --------------------------------
As someone mentioned, it appears that cogent is having major peering issues.

I'm still waiting for Cogent's ip sla site to be updated w/ updated
information.

regards,
/virendra