I have a RB2011AHx2 ( 6.15/3.10 ) and whenever the MTU is changed on any interface belonging to Switch1 all ports drop link.
Scenario:
-ether10 is the only port in service and is on switch1
-I change the MTU on that port, it drops and I have to wait for safe mode to recover.
-I change the MTU on any other port on switch1 and the port drops..
Connected in via ether10 and try to change l2MTU on no-link port ether8
[admin@] <SAFE> interface ethernet print
Flags: X - disabled, R - running, S - slave
# NAME MTU MAC-ADDRESS ARP MASTER-PORT SWITCH
0 ether1 1500 D4:CA:6D:7B:6D:15 enabled none switch2
1 ether2 1500 D4:CA:6D:7B:6D:16 enabled none switch2
2 ether3 1500 D4:CA:6D:7B:6D:17 enabled none switch2
3 ether4 1500 D4:CA:6D:7B:6D:18 enabled none switch2
4 ether5 1500 D4:CA:6D:7B:6D:19 enabled none switch2
5 ether6 1500 D4:CA:6D:7B:6D:1A enabled none switch1
6 ether7 1500 D4:CA:6D:7B:6D:1B enabled none switch1
7 ether8 1500 D4:CA:6D:7B:6D:1C enabled none switch1
8 S ether9 1500 D4:CA:6D:7B:6D:1D enabled none switch1
9 R ether10 1500 D4:CA:6D:7B:6D:1E enabled none switch1
10 ether11 1500 D4:CA:6D:7B:6D:1F enabled
11 ether12 1500 D4:CA:6D:7B:6D:20 enabled
12 ether13 1500 D4:CA:6D:7B:6D:21 enabled
[admin@] <SAFE> /interface ethernet
[admin@] /interface ethernet<SAFE> set 7 l2mtu=2100
[admin@] /interface ethernet<SAFE>
[admin@] /interface ethernet<SAFE>
[admin@] /interface ethernet<SAFE>
Connection closed by foreign host.AFE>
The Log doesn’t show anything other than
: Device updated by admin
: ether10 link down
This however does not occur when changing the MTU on Switch2 interfaces, it does not kick me out ( although it might drop all the ports on that switch too, I just have nothing connected yet to test ( this is in a remote location ))
Help? suggestions?