When i try to configure my RB2011UiAS-RM router, i get disconnected from the router as soon as i configure a settings in the
/interface ethernet
menu.
The same happens when i try to configure the same configuration item over the Web interface.
After being disconnected from my SSH session, i can no longer SSH back into the router, and i cannot use the Web interface anymore.
Also, i can no longer ping the router. I configure my linux box to keep transmitting ECMP ECHO_REQ, and i see them arriving at the router’s LCD. But i cannot see any packets transmitted back (no Tx).
I can verify by using wireshark on my box that the router is replying to AR requests, just nothing else (no ICMP, HTTP, SSH).
When i configure the same settings over the Serial console, i dont get any problems, which means that this issue is network related, not hardware related.
(22:38:06)wizard@ubox:~$
(22:38:07)wizard@ubox:~$ping -v -i 30 -c 1 -w 3600 192.168.0.9
PING 192.168.0.9 (192.168.0.9) 56(84) bytes of data.
64 bytes from 192.168.0.9: icmp_req=1 ttl=64 time=0.763 ms
--- 192.168.0.9 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.112/0.112/0.112/0.000 ms
(22:38:22)wizard@ubox:~$
(22:38:27)wizard@ubox:~$ssh admin@192.168.0.9
The authenticity of host '192.168.0.9 (192.168.0.9)' can't be established.
DSA key fingerprint is 70:7a:c4:7c:01:74:f8:cc:25:3d:33:63:20:09:ea:6e.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.0.9' (DSA) to the list of known hosts.
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MMM MMMM MMM III KKK KKK RRRRRR OOOOOO TTT III KKK KKK
MMM MM MMM III KKKKK RRR RRR OOO OOO TTT III KKKKK
MMM MMM III KKK KKK RRRRRR OOO OOO TTT III KKK KKK
MMM MMM III KKK KKK RRR RRR OOOOOO TTT III KKK KKK
MikroTik RouterOS 6.7 (c) 1999-2013 http://www.mikrotik.com/
[?] Gives the list of available commands
command [?] Gives help on the command and list of arguments
[Tab] Completes the command/word. If the input is ambigous,
a second [Tab] gives possible options
/ Move up to base level
.. Move up one level
/command Use command at the base level
[admin@MikroTik] > /interface ethernet
[admin@MikroTik] /interface ethernet> print
Flags: X - disabled, R - running, S - slave
# NAME MTU MAC-ADDRESS ARP MASTER-PORT SWITCH
0 ether1-mainNet 1500 00:0C:42:C5:68:0F enabled none switch1
1 R ether2 1500 00:0C:42:C5:68:10 enabled none switch1
2 ether3 1500 00:0C:42:C5:68:11 enabled none switch1
3 ether4 1500 00:0C:42:C5:68:12 enabled none switch1
4 ether5 1500 00:0C:42:C5:68:13 enabled none switch1
5 ether6 1500 00:0C:42:C5:68:14 enabled none switch2
6 ether7 1500 00:0C:42:C5:68:15 enabled none switch2
7 XS ether8 1500 00:0C:42:C5:68:16 enabled ether6 switch2
8 XS ether9 1500 00:0C:42:C5:68:17 enabled ether6 switch2
9 ether10 1500 00:0C:42:C5:68:18 enabled none switch2
10 sfp1-gateway 1500 00:0C:42:C5:68:0E enabled none switch1
[admin@MikroTik] /interface ethernet> /interface bridge
[admin@MikroTik] /interface bridge> print
Flags: X - disabled, R - running
[admin@MikroTik] /interface bridge> port
[admin@MikroTik] /interface bridge port> print
Flags: X - disabled, I - inactive, D - dynamic
# INTERFACE BRIDGE PRIORITY PATH-COST HORIZON
[admin@MikroTik] /interface bridge port> /interface ethernet
[admin@MikroTik] /interface ethernet> set 7 master-port=none
[admin@MikroTik] /interface ethernet>
[admin@MikroTik] /interface ethernet> set 8 master-port=none
[admin@MikroTik] /interface ethernet> print
Flags: X - disabled, R - running, S - slave
# NAME MTU MAC-ADDRESS ARP MASTER-PORT SWITCH
0 ether1-mainNet 1500 00:0C:42:C5:68:0F enabled none switch1
1 R ether2 1500 00:0C:42:C5:68:10 enabled none switch1
2 ether3 1500 00:0C:42:C5:68:11 enabled none switch1
3 ether4 1500 00:0C:42:C5:68:12 enabled none switch1
4 ether5 1500 00:0C:42:C5:68:13 enabled none switch1
5 ether6 1500 00:0C:42:C5:68:14 enabled none switch2
6 ether7 1500 00:0C:42:C5:68:15 enabled none switch2
7 X ether8 1500 00:0C:42:C5:68:16 enabled none switch2
8 X ether9 1500 00:0C:42:C5:68:17 enabled none switch2
9 ether10 1500 00:0C:42:C5:68:18 enabled none switch2
10 sfp1-gateway 1500 00:0C:42:C5:68:0E enabled none switch1
[admin@MikroTik] /interface ethernet> set 7 disabled=
no yes
[admin@MikroTik] /interface ethernet> set 7 disabled=no
[admin@MikroTik] /interface ethernet> set 8 disabled=no
[admin@MikroTik] /interface ethernet> Connection to 192.168.0.9 closed.
(22:45:42)wizard@ubox:~$
(22:45:44)wizard@ubox:~$ping -v -i 30 -c 1 -w 3600 192.168.0.9
PING 192.168.0.9 (192.168.0.9) 56(84) bytes of data.
^C
--- 192.168.0.9 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms
(22:45:54)wizard@ubox:~$ping 192.168.0.9
PING 192.168.0.9 (192.168.0.9) 56(84) bytes of data.
^C
--- 192.168.0.9 ping statistics ---
5 packets transmitted, 0 received, 100% packet loss, time 4032ms
(22:46:04)wizard@ubox:~$
Is this expected behavior?
Am i doing somethin wrong?
How do i proceed with troubleshooting?