i have a networking mystery ; i hope someone might give me a clue.
i am working to restore a web server to internet access that is failing after att update
the att older modem (pace 5238ac) with arris BGW210-700.
i have a static ip from att in the range 108.220.213.0/255.255.255.248, 108.220.213.121 is the external ip for the server.
the bgw210-700 is the primary router/modem and is connected to a 3rd party router, netgear nighthawk,
the internal 10.0.0.0/ connects to the netgear nighthawk
ATT's broadband configuration is
Blackhole-ATT (wireless name)
Broadband connection source DSL
Broadband connection up
Broadband network type lightspeed
Broadband ipv4 address 108.90.204.76
Broadband gateway address 108.90.204.1
outbound packets from the server (WS), are routed from the 10.0.0.1 nighthawk to the ATT router to the internet.
the 108.90.204.0 network routing from the att router to the att's gateway. .76 is the router, .1 is the GW.
sample route, ...
10.0.0.101 ws.linuxlighthouse.com (internal IP) 2 packets transmitted, 2 received, 0% packet loss, time 1033ms
10.0.0.1 Blackhole-NH 2 packets transmitted, 2 received, 0% packet loss, time 1018ms
192.168.1.254 Blackhole-ATT 2 packets transmitted, 2 received, 0% packet loss, time 1001ms
108.90.204.76 att subnet (local router) 2 packets transmitted, 2 received, 0% packet loss, time 1002ms
108.90.204.1 att subnet (remote GW) 2 packets transmitted, 2 received, 0% packet loss, time 1001ms
108.220.213.121 ws.linuxlighthouse.com (public IP) 2 packets transmitted, 2 received, 0% packet loss, time 1001ms
108.220.213.126 linuxlighthouse (public GW) 2 packets transmitted, 2 received, 0% packet loss, time 1001ms
now the mystery. where 108.220.213.121 is a publicly visible ip for the server, a remote traceroute is wonky!!
consider the below traceroute, it reports hops up to 108.90.204.76, stopping there instead of doing one more hop
1 <1 ms <1 ms <1 ms Linksys35675 [192.168.1.1]
2 9 ms 8 ms 17 ms 142-254-236-209.inf.spectrum.com [142.254.236.209]
3 12 ms 10 ms 11 ms lag-63.tjngcaac01h.netops.charter.com [24.30.172.49]
4 14 ms 13 ms 13 ms lag-29.lsaicaev01r.netops.charter.com [72.129.18.240]
5 12 ms 14 ms 11 ms lag-26.lsancarc01r.netops.charter.com [72.129.17.0]
6 19 ms 13 ms 14 ms lag-16.lsancarc0yw-bcr00.netops.charter.com [66.109.6.102]
7 25 ms 37 ms 42 ms lag-3.pr2.lax10.netops.charter.com [107.14.19.41]
8 17 ms 17 ms 17 ms 192.205.32.253
9 22 ms 21 ms 21 ms cr1.la2ca.ip.att.net [12.122.128.102]
10 24 ms 25 ms 25 ms 12.122.158.41
11 * * * Request timed out.
12 * * * Request timed out.
13 23 ms 21 ms 23 ms 99.134.39.15
14 25 ms 24 ms 26 ms 99.161.44.79
15 44 ms 43 ms 43 ms 108-90-204-76.lightspeed.mtryca.sbcglobal.net [108.90.204.76]
16 * * * Request timed out.
17 * * * Request timed out.
18 * * * Request timed out.
19
could anyone shed some light on this mystery??
tia,jackc...
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