3 Messages
Anycast Not Working Properly
Hello - Who do I need to escalate this with to get Anycast working correctly for our area? The last few months it has been thinking Chicago is the closest area to us, but our connection is in Idaho/Utah. It had been working fine and always selecting Denver as the closest, or areas in California were always the next closest. Chicago shouldn't be getting the traffic at all. I have waited for it to perhaps sort itself out, but it appears to be getting worse rather than better, as even google.com is now heading all the way to Chicago. Here are a few examples to help:
google.com
(first hops deleted for privacy)
6 11 ms 17 ms 13 ms be-501-ar01.saltlakecity.ut.utah.comcast.net [24.124.175.214]
7 * * * Request timed out.
8 20 ms 8 ms 9 ms 216.239.62.187
9 11 ms 12 ms 13 ms 142.250.212.26
10 24 ms 124 ms 16 ms 142.251.241.220
11 40 ms 43 ms 31 ms 108.170.252.152
12 34 ms * 34 ms 209.85.249.128
13 43 ms 41 ms 43 ms 192.178.255.11
14 43 ms 44 ms 43 ms 209.85.249.137
15 40 ms 41 ms 38 ms 192.178.249.209
16 42 ms * 45 ms 142.251.60.11
17 42 ms 39 ms 39 ms ord38s30-in-f14.1e100.net [142.250.191.174]
doh.xfinity.com
(first hops deleted for privacy)
7 20 ms 17 ms 17 ms be-501-ar01.saltlakecity.ut.utah.comcast.net [24.124.175.214]
8 25 ms 33 ms 22 ms be-36721-cs02.champa.co.ibone.comcast.net [96.110.43.229]
9 54 ms 44 ms 52 ms be-1224-cs22.northlake.il.ibone.comcast.net [96.110.35.53]
10 * 47 ms 44 ms 96.110.41.54
11 45 ms 54 ms * et-0-0-1-sas02-d.northlake.il.ndcchgo.comcast.net [69.139.239.122]
12 51 ms 54 ms 62 ms lo0-t1s8016-d.northlake.il.ndcchgo.comcast.net [96.109.108.90]
13 * 44 ms 48 ms lo0-t2s8006-d.northlake.il.ndcchgo.comcast.net [96.109.108.64]
14 51 ms 43 ms 50 ms lo0-t1s8009-d.northlake.il.ndcchgo.comcast.net [96.109.108.83]
15 * * * Request timed out.
16 44 ms 43 ms 44 ms 10.60.164.131
dns.nextdns.io (Major DNS provider)
(first hops deleted for privacy)
6 12 ms 13 ms 12 ms be-501-ar01.saltlakecity.ut.utah.comcast.net [24.124.175.214]
7 19 ms 22 ms 21 ms be-36741-cs04.champa.co.ibone.comcast.net [96.110.43.237]
8 46 ms 43 ms 54 ms be-2311-pe11.350ecermak.il.ibone.comcast.net [96.110.33.202]
9 * * * Request timed out.
10 * * * Request timed out.
11 * * * Request timed out.
12 * * * Request timed out.
13 43 ms 44 ms 43 ms dns.nextdns.io [45.76.21.53]
dns.controld.com (Major DNS provider)
(first hops deleted for privacy)
7 7 ms 12 ms 13 ms be-501-ar01.saltlakecity.ut.utah.comcast.net [24.124.175.214]
8 23 ms 30 ms 22 ms be-36741-cs04.champa.co.ibone.comcast.net [96.110.43.237]
9 18 ms 26 ms 21 ms be-3412-pe12.910fifteenth.co.ibone.comcast.net [96.110.33.142]
10 23 ms 26 ms 21 ms ae-3.a00.dnvrco04.us.bb.gin.ntt.net [129.250.9.132]
11 * * * Request timed out.
12 42 ms 46 ms 39 ms ae-5.r25.chcgil09.us.bb.gin.ntt.net [129.250.3.160]
13 55 ms 48 ms 43 ms ae-13.a05.chcgil09.us.bb.gin.ntt.net [129.250.4.23]
14 * * * Request timed out.
15 * * * Request timed out.
16 * * * Request timed out.
17 * * * Request timed out.
18 43 ms 41 ms 51 ms dns.controld.com [76.76.2.22]
You can see traffic now just goes right through Denver/Colorado and straight to Chicago/Illinois. I am using my own modem, and have forced it to grab a different IP and that didn't change anything. I can't be the only one in the area having this issue. Thanks for any help in getting this escalated to a network engineer who can sort it out.
XfinitySeth
Official Employee
•
146 Messages
1 day ago
Hello porkapatamus 👋 Thank you for using our community to reach out for support! We're not able to provide support for third-party products or services like Anycast on this platform, but I would recommend reaching out directly to Anycast support through their website, or potentially even the manufacturer of your modem if you're not able to brute force the connection from where you'd like it to be.
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BruceW
Gold Problem Solver
•
26.4K Messages
11 hours ago
'Anycast' as used by the OP (not to be confused with 'AnyCast' brand casting adapter devices) is not a brand name, company, or product, it's a networking technology Comcast uses in its DNS system. It is not a "third-party product". There is no "Anycast support" except that offered by Comcast's own networking staff.
Please see https://en.wikipedia.org/wiki/Anycast and/or https://www.cloudflare.com/learning/dns/what-is-anycast-dns/
Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.
(edited)
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porkapatamus
3 Messages
11 hours ago
Yes, what BruceW posted above. I’m asking how I can get in contact with someone higher up in Internet support at Comcast who knows what I’m referring to, and can pass along my information to the appropriate network engineers to get it fixed. This problem would have to be affecting every customer in this area, not just me. Thanks!
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