Assymetric routing L3/VZ (FIOS)

Anurag Bhatia me at anuragbhatia.com
Sat Apr 21 08:12:55 CDT 2012


Verizon customer of Level 3?  I thought since both are tier 1 providers -
they would be exchanging routes in settlement free peering. Curious to know
if that is not the case.


(Sent from my mobile device)

Anurag Bhatia
http://anuragbhatia.com
On Apr 21, 2012 12:40 AM, "Deepak Jain" <deepak at ai.net> wrote:

>
> Is anyone else seeing this? DC - DFW back to DC? AFAIK, Verizon-GNI is a
> customer of L3, so no weird peering issues should be afoot. This adds about
> 40ms to the R/T time.  The path leaving Verizon-GNI (FIOS) goes (seemingly)
> DC-DC and has lower times (<5ms) unidirectionally.
>
> Tracing the route to pool-173-79-242-218.washdc.**fios.verizon.net<http://pool-173-79-242-218.washdc.fios.verizon.net>(173.79.242.218                                  )
>
> [...]
>
>  3 ge-6-16.car1.Baltimore1.**Level3.net<http://ge-6-16.car1.Baltimore1.Level3.net>(4.59.244.85) [AS 65518] 4 msec 0 msec 4
> msec
>  4 ae-11-11.car2.Baltimore1.**Level3.net<http://ae-11-11.car2.Baltimore1.Level3.net>(4.69.134.110) [AS 65518] 0 msec 4 msec                                   0
> msec
>  5 ae-8-8.ebr2.Washington1.**Level3.net<http://ae-8-8.ebr2.Washington1.Level3.net>(4.69.134.105) [AS 65518] 4 msec 4 msec 4
> msec
>  6 ae-72-72.csw2.Washington1.**Level3.net<http://ae-72-72.csw2.Washington1.Level3.net>(4.69.134.150) [AS 65518] 4 msec
>    ae-82-82.csw3.Washington1.**Level3.net<http://ae-82-82.csw3.Washington1.Level3.net>(4.69.134.154) [AS 65518] 8 msec 8 msec
>  7 ae-61-61.ebr1.Washington1.**Level3.net<http://ae-61-61.ebr1.Washington1.Level3.net>(4.69.134.129) [AS 65518] 4 msec
>    ae-91-91.ebr1.Washington1.**Level3.net<http://ae-91-91.ebr1.Washington1.Level3.net>(4.69.134.141) [AS 65518] 4 msec
>    ae-71-71.ebr1.Washington1.**Level3.net<http://ae-71-71.ebr1.Washington1.Level3.net>(4.69.134.133) [AS 65518] 4 msec
>  8 ae-2-2.ebr3.Atlanta2.Level3.**net<http://ae-2-2.ebr3.Atlanta2.Level3.net>(4.69.132.85) [AS 65518] 16 msec 16 msec 16
>   msec
>  9 ae-7-7.ebr3.Dallas1.Level3.net (4.69.134.21) [AS 65518] 36 msec 36
> msec 36 m                                  sec
>  10 ae-73-73.csw2.Dallas1.Level3.**net<http://ae-73-73.csw2.Dallas1.Level3.net>(4.69.151.145) [AS 65518] 40 msec
>    ae-63-63.csw1.Dallas1.Level3.**net<http://ae-63-63.csw1.Dallas1.Level3.net>(4.69.151.133) [AS 65518] 40 msec 40 msec
>  11 ae-4-90.edge2.Dallas3.Level3.**net<http://ae-4-90.edge2.Dallas3.Level3.net>(4.69.145.204) [AS 65518] 44 msec
>    ae-3-80.edge2.Dallas3.Level3.**net<http://ae-3-80.edge2.Dallas3.Level3.net>(4.69.145.140) [AS 65518] 36 msec
>    ae-1-60.edge2.Dallas3.Level3.**net<http://ae-1-60.edge2.Dallas3.Level3.net>(4.69.145.12) [AS 65518] 36 msec
>  12 MCI-level3-ae.dallas3.level3.**net<http://MCI-level3-ae.dallas3.level3.net>(4.68.62.34) [AS 65518] 36 msec
>    mci-level3-30g.dallas3.level3.**net<http://mci-level3-30g.dallas3.level3.net>(4.68.62.166) [AS 65518] 36 msec
>    MCI-level3-ae.dallas3.level3.**net<http://MCI-level3-ae.dallas3.level3.net>(4.68.62.34) [AS 65518] 36 msec
>  13 0.ge-0-0-0.DFW01-BB-RTR1.**verizon-gni.net<http://0.ge-0-0-0.DFW01-BB-RTR1.verizon-gni.net>(152.63.2.146) [AS 65518] 36 msec 3                                  6 msec
>    0.ae2.DFW01-BB-RTR2.verizon-**gni.net<http://0.ae2.DFW01-BB-RTR2.verizon-gni.net>(152.63.2.229) [AS 65518] 36 msec
>  14  *  *  *
>
>
> We're opening a ticket with them, but figured NANOG is an often better
> place for these resolutions.
>
> Thanks in advance,
>
> Deepak Jain
> AiNET
> Home of CyberNAP
> www.ai.net
>
>


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