On 26/03/2022 10:29, Jack Craig wrote:
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
<
http://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/ <
http://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 <
http://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 <
http://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
Sounds like 108.90.204.76 is missing routes. I'm assuming that 108.220.213.121
previously answered pings
and originally was the final destination of an external traceroute.
[egreshko@meimei ~]$ traceroute 108.220.213.121
traceroute to 108.220.213.121 (108.220.213.121), 30 hops max, 60 byte packets
1 _gateway (192.168.1.1) 0.434 ms 0.728 ms 0.681 ms
2 * * *
3
tpdt-3308.hinet.net (168.95.82.198) 23.574 ms 23.530 ms 23.451 ms
4
tpdb-3031.hinet.net (220.128.1.102) 7.827 ms
220-128-1-50.hinet-ip.hinet.net
(220.128.1.50) 7.210 ms
tpdt-3032.hinet.net (220.128.27.94) 7.386 ms
5
r4102-s2.tp.hinet.net (220.128.7.69) 7.123 ms
r4102-s2.tp.hinet.net (220.128.14.93)
7.296 ms
r4102-s2.tp.hinet.net (220.128.13.93) 7.252 ms
6
r4002-s2.tp.hinet.net (220.128.6.85) 7.538 ms
r4002-s2.tp.hinet.net (220.128.6.81)
6.710 ms 6.656 ms
7
pa-r32.us.hinet.net (202.39.91.29) 133.962 ms 132.083 ms 132.075 ms
8 32.141.85.13 (32.141.85.13) 133.458 ms 133.358 ms 133.297 ms
9 12.123.242.38 (12.123.242.38) 138.066 ms 137.303 ms 139.959 ms
10 12.122.149.225 (12.122.149.225) 143.022 ms 137.567 ms 137.573 ms
11 12.122.158.25 (12.122.158.25) 138.446 ms 137.435 ms 138.346 ms
12 * * *
13 99.134.39.24 (99.134.39.24) 136.686 ms 136.506 ms *
14 99.134.39.11 (99.134.39.11) 136.191 ms 136.211 ms 136.066 ms
15 99.161.44.77 (99.161.44.77) 137.461 ms 137.438 ms 138.025 ms
16
108-90-204-76.lightspeed.mtryca.sbcglobal.net (108.90.204.76) 157.627 ms 157.580 ms
157.980 ms
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
25 * * *
26 * * *
27 * * *
28 * * *
29 * * *
30 * * *
Remember if a server that should be visible externally, but isn't. Then outbound
requests/replies will also fail.
--
Did 황준호 die?