BGP Feed - Facebook v6 doesnt work without default route

TristramCheer

Newbie

Posts: 5

BGP Feed - Facebook v6 doesnt work without default route

« on: December 06, 2010, 09:11:55 pm »

Hi All,

Been scratching my head a little, We have a BGP feed from HE.net for v6 and we've been having trouble access www.v6.facebook.com which we resolve as 2620:0:1cfe:face:b00c::3 but we dont see this in any of the bgp routes. When we add a default route to HE.net it works.

We aren't filtering any incoming routes from HE.net, Does FB announce the routes?


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desc

Newbie

Posts: 12

Re: BGP Feed - Facebook v6 doesnt work without default route

« Reply #1 on: December 07, 2010, 05:23:33 am »

Facebook does announce a /40 range.

It looks like that HE has a peering with Facebook.
I got their prefix 2620:0:1cfe::/40 via HE BGP feed.

But beside that the V6 website is also not reachable from here.
After "facebook.gige-g5-9.core1.sjc2.he.net (2001:470:0:14a::2)" we get only timeouts on a traceroute.


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jimb

Hero Member

Posts: 804

^^^ Warped picture

Re: BGP Feed - Facebook v6 doesnt work without default route

« Reply #2 on: December 07, 2010, 02:51:23 pm »

Traceroutes may not work since they're using LISP, AFAIK. Although I have to admit I don't know a lot about it, having only skimmed some docs on it. But it didn't seem like something a traceroute would work through.


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JRey

Newbie

Posts: 7

Re: BGP Feed - Facebook v6 doesnt work without default route

« Reply #3 on: March 09, 2011, 08:13:22 pm »

I'm also experiencing this. Was working earlier sometime in the last week or two but not anymore today. I can ping www.v6.facebook.com but traceroute6 gets as far as:

Quote

traceroute to www.v6.facebook.com (2620:0:1cfe:face:b00c::3), 30 hops max, 80 byte packets
1 ---.tunnel.tserv13.ash1.ipv6.he.net (2001:470:7:---::1) 71.745 ms 78.757 ms 77.020 ms
2 gige-g4-12.core1.ash1.he.net (2001:470:0:90::1) 79.587 ms 79.510 ms 80.419 ms
3 10gigabitethernet1-2.core1.atl1.he.net (2001:470:0:1b5::2) 99.962 ms 100.836 ms 100.759 ms
4 10gigabitethernet3-2.core1.dal1.he.net (2001:470:0:1b6::1) 119.959 ms 122.266 ms 123.169 ms
5 10gigabitethernet1-2.core1.phx1.he.net (2001:470:0:15a::1) 132.818 ms 134.168 ms 135.005 ms
6 10gigabitethernet2-2.core1.lax1.he.net (2001:470:0:159::1) 144.328 ms 137.409 ms 136.037 ms
7 10gigabitethernet2-2.core1.fmt2.he.net (2001:470:0:18d::1) 153.279 ms 154.200 ms 154.124 ms
8 10gigabitethernet1-1.core1.sjc2.he.net (2001:470:0:31::2) 155.440 ms 160.570 ms 161.486 ms
9 facebook.gige-g5-9.core1.sjc2.he.net (2001:470:0:14a::2) 150.806 ms 151.680 ms 149.236 ms
10 * * *

I'm using the Anycasted IPv6 Caching Nameserver of 2001:470:20::2 & my ISPs IPv4 DNS servers. Should I also try using the Anycasted IPv4 Caching Nameserver listed in my tunnel details instead or along with the other ones?


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Evg33

Newbie

Posts: 1

Re: BGP Feed - Facebook v6 doesnt work without default route

« Reply #4 on: March 09, 2011, 11:25:15 pm »

traceroute6 www.v6.facebook.com -T -p 80 -f3
traceroute to www.v6.facebook.com (2620:0:1cfe:face:b00c::3), 30 hops max, 80 byte packets
3 gige-g2-20.core1.ams1.he.net (2001:470:0:7d::1) 140.759 ms 140.698 ms 140.890 ms
4 10gigabitethernet1-4.core1.lon1.he.net (2001:470:0:3f::1) 141.355 ms 141.331 ms 141.303 ms
5 10gigabitethernet7-4.core1.nyc4.he.net (2001:470:0:3e::1) 217.966 ms 217.951 ms 217.922 ms
6 10gigabitethernet5-3.core1.lax1.he.net (2001:470:0:10e::1) 273.302 ms 273.531 ms 270.229 ms
7 10gigabitethernet2-2.core1.fmt2.he.net (2001:470:0:18d::1) 288.433 ms 288.654 ms 288.630 ms
8 10gigabitethernet1-1.core1.sjc2.he.net (2001:470:0:31::2) 278.824 ms 278.910 ms 278.811 ms
9 facebook.gige-g5-9.core1.sjc2.he.net (2001:470:0:14a::2) 278.741 ms 278.987 ms 278.885 ms
10 www.v6.facebook.com (2620:0:1cfe:face:b00c::3) 279.544 ms 279.458 ms 279.335 ms


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