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Posts: 14
Registered: ‎05-16-2017

ERX Router Intermittent Fault with unresponsive network ports

[ Edited ]

Over the past year I've posted a couple of questions regarding my ER-X that Intermittently stops responding! and more recently Intermittent fault driving me Blinking LED mad but the information that I provided or should I say the lack of information made responses guesses at best, however one user suggested to use the serial port within the router to capture more information the events before or after the crashing of the router.

 

To give you a quick summary of the problem is the router becomes unresponsive on any network ports, while before I was unable to read the log information as the CLI was unaccessible, thankfully do the serial connection, I can now see a little more information that I hope the community can shed a little more light:

 

Moment of crash

Jan  2 02:20:54 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:20:57 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:21:09 ubnt pppd[1588]: Serial link appears to be disconnected.
Jan  2 02:21:11 ubnt ntpd[1797]: ntpd exiting on signal 15
Jan  2 02:21:13 ubnt ntpd[29046]: ntpd 4.2.6p2@1.2194-o Tue Nov 20 17:26:26 UTC 2018 (1)
Jan  2 02:21:13 ubnt ntpd[29047]: proto: precision = 42.650 usec
Jan  2 02:21:15 ubnt pppd[1588]: Connection terminated: no multilink.
Jan  2 02:21:15 ubnt pppd[1588]: Modem hangup
Jan  2 02:21:15 ubnt ntpd_intres[29053]: host name not found: 0.ubnt.pool.ntp.org
Jan  2 02:21:15 ubnt ntpd_intres[29053]: host name not found: 1.ubnt.pool.ntp.org
Jan  2 02:21:15 ubnt ntpd_intres[29053]: host name not found: 2.ubnt.pool.ntp.org
Jan  2 02:21:15 ubnt ntpd_intres[29053]: host name not found: 3.ubnt.pool.ntp.org
Jan  2 02:21:24 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:21:24 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:21:26 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:21:29 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:21:37 ubnt login[28487]: pam_unix(login:auth): check pass; user unknown
Jan  2 02:21:37 ubnt login[28487]: pam_unix(login:auth): authentication failure; logname=LOGIN uid=0 euid=0 tty=/dev/ttyS1 ruser= rhost=
Jan  2 02:21:40 ubnt login[28487]: FAILED LOGIN (1) on '/dev/ttyS1' FOR 'UNKNOWN', Authentication failure
Jan  2 02:21:45 ubnt igmpproxy[2094]: setsockopt IP_MULTICAST_IF 86.156.239.59; Errno(126): Cannot assign requested address
Jan  2 02:21:58 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:22:01 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:22:17 ubnt ntpd_intres[29053]: host name not found: 0.ubnt.pool.ntp.org
Jan  2 02:22:17 ubnt ntpd_intres[29053]: host name not found: 1.ubnt.pool.ntp.org
Jan  2 02:22:17 ubnt ntpd_intres[29053]: host name not found: 2.ubnt.pool.ntp.org
Jan  2 02:22:17 ubnt ntpd_intres[29053]: host name not found: 3.ubnt.pool.ntp.org
Jan  2 02:22:20 ubnt pppd[1588]: Timeout waiting for PADO packets
Jan  2 02:22:24 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:22:24 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:22:25 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:22:28 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:22:57 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:23:00 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:23:24 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:23:25 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:23:29 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:23:32 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:23:35 ubnt pppd[1588]: Timeout waiting for PADO packets
Jan  2 02:23:56 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:23:59 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:24:20 ubnt ntpd_intres[29053]: host name not found: 0.ubnt.pool.ntp.org
Jan  2 02:24:20 ubnt ntpd_intres[29053]: host name not found: 1.ubnt.pool.ntp.org
Jan  2 02:24:20 ubnt ntpd_intres[29053]: host name not found: 2.ubnt.pool.ntp.org
Jan  2 02:24:20 ubnt ntpd_intres[29053]: host name not found: 3.ubnt.pool.ntp.org
Jan  2 02:24:25 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:24:25 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:24:28 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:24:31 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:24:50 ubnt pppd[1588]: Timeout waiting for PADO packets
Jan  2 02:25:00 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:25:03 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:25:25 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:25:25 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:25:27 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:25:30 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:25:59 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:26:02 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:26:05 ubnt pppd[1588]: Timeout waiting for PADO packets
Jan  2 02:26:25 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:26:25 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:26:26 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:26:29 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:26:58 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:27:01 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:27:20 ubnt pppd[1588]: Timeout waiting for PADO packets
Jan  2 02:27:25 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:27:25 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
ss
Jan  2 02:27:28 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:27:57 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:28:00 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:28:22 ubnt ntpd_intres[29053]: host name not found: 0.ubnt.pool.ntp.org
Jan  2 02:28:22 ubnt ntpd_intres[29053]: host name not found: 1.ubnt.pool.ntp.org
Jan  2 02:28:22 ubnt ntpd_intres[29053]: host name not found: 2.ubnt.pool.ntp.org
Jan  2 02:28:22 ubnt ntpd_intres[29053]: host name not found: 3.ubnt.pool.ntp.org
Jan  2 02:28:24 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:28:25 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:28:26 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:28:27 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:28:36 ubnt pppd[1588]: Timeout waiting for PADO packets
Jan  2 02:28:56 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:28:59 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:29:26 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:29:26 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:29:28 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:29:31 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:29:51 ubnt pppd[1588]: Timeout waiting for PADO packets
Jan  2 02:30:00 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:30:03 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:30:26 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:30:26 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:30:27 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:30:30 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:30:59 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:31:02 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:31:06 ubnt pppd[1588]: Timeout waiting for PADO packets
Jan  2 02:31:26 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:31:26 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:31:26 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:31:29 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:31:58 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:32:01 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:32:21 ubnt pppd[1588]: Timeout waiting for PADO packets
Jan  2 02:32:26 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:32:26 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:32:30 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:32:33 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:33:02 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:33:05 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:33:27 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:33:27 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:33:29 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:33:32 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:33:36 ubnt pppd[1588]: Timeout waiting for PADO packets
Jan  2 02:34:01 ubnt kernel: ESW: Link Status Changed - Port3 Link Down
Jan  2 02:34:04 ubnt kernel: ESW: Link Status Changed - Port3 Link UP
Jan  2 02:34:27 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:34:27 ubnt ddclient[1975]: WARNING:  found neither ipv4 nor ipv6 address
Jan  2 02:34:28 ubnt kernel: ESW: Link Status Changed - Port3 Link Down

 

 

PORT 3 is linked to the main computer, I don't think this is related to the issue because of all the ports fail and the only way to communicate with the router is serial.

 

I think the problem starts with:

Jan  2 02:21:11 ubnt ntpd[1797]: ntpd exiting on signal 15
Jan  2 02:21:13 ubnt ntpd[29046]: ntpd 4.2.6p2@1.2194-o Tue Nov 20 17:26:26 UTC 2018 (1)
Jan  2 02:21:13 ubnt ntpd[29047]: proto: precision = 42.650 usec
Jan  2 02:21:15 ubnt pppd[1588]: Connection terminated: no multilink.
Jan  2 02:21:15 ubnt pppd[1588]: Modem hangup


So, if the modem hangups, why is it not redialing? also, why does the internal network cease to work? during a VDSL drop?

 

Member
Posts: 118
Registered: ‎10-16-2015
Kudos: 18

Re: ERX Router Intermittent Fault with unresponsive network ports

+1

Did you ever get a result on this?