Every time i have to put write command then only switch works as per the configuration. how to solve this?

[sundar ganesh]

Hi,

I have configured two separate switches (sg 300-24P) with trunk and vlan.

Switch 1: 

Port 1: trunk, trunk allowed vlan 2

Port 2: Access, Access vlan2

Switch 2: 

Port 1: trunk, trunk allowed vlan 2

Port 2: Access, Access vlan2

Whenever reboot the computer or simply unplug and re-plug the utp cable the switch is not working as per the configuration. If i put "write" or "copy run start" command then it works as per the configuration. Again if i unplug and re-plug to the port, the switch doesn't work as per the config. If  i put  again  "write" command then it works fine.

I have tried alot to solve, but no luck so far.

Pls help...

[Georg Pauwen · Accepted solution]

Hello,

check if you might be hitting the bug below. There is no workaround other than do what you are already doing...

SG300-28PP: MAC addresses stop being populated until wr command is issued
CSCvi36745
Description
Symptom:
example of issue:

W130SSG300-28PP#show mac address-table
Flags: I - Internal usage VLAN
Aging time is 300 sec

Vlan Mac Address Port Type
------------ --------------------- ---------- ----------
1 00:00:00:00:00:09 gi28 dynamic
1 00:23:24:8f:2c:26 gi28 dynamic
1 00:23:24:e7:25:2a gi28 dynamic
1 00:23:24:e7:29:20 gi28 dynamic
1 00:db:70:3f:23:e1 gi28 dynamic
1 1c:1d:86:c4:e8:55 gi3 dynamic
1 2c:59:e5:d8:9b:9f gi28 dynamic
1 30:f7:0d:5c:9e:fe gi28 dynamic
1 30:f7:0d:7c:5f:6e gi28 dynamic
1 30:f7:0d:7c:5f:79 gi28 dynamic
1 30:f7:0d:92:33:b4 gi28 dynamic
1 34:64:a9:6b:b3:96 gi28 dynamic
1 38:63:bb:01:bc:c9 gi28 dynamic
1 6c:4b:90:27:4e:03 gi28 dynamic
1 7c:69:f6:39:20:23 gi28 dynamic
1 7c:69:f6:39:20:50 gi28 dynamic
1 c4:b9:cd:33:6b:aa 0 self
1 e0:4f:43:21:95:fb gi28 dynamic
1 e0:4f:43:21:a0:fd gi3 dynamic
1 f0:29:29:77:1c:96 gi28 dynamic
1 f0:29:29:77:1c:c0 gi28 dynamic
2 04:e5:36:43:68:ae gi28 dynamic
2 58:55:ca:bb:f9:ae gi28 dynamic
2 b0:72:bf:da:43:9d gi28 dynamic
2 f0:29:29:77:1c:96 gi28 dynamic
100 00:00:0c:6c:b2:2c gi28 dynamic
100 00:d0:5f:01:33:00 gi28 dynamic
100 0c:27:24:30:37:7e gi28 dynamic
100 1c:1d:86:c4:e8:55 gi3 dynamic
100 f0:29:29:77:1c:96 gi28 dynamic

W130SSG300-28PP#
W130SSG300-28PP#
W130SSG300-28PP#wr mem
Overwrite file [startup-config].... (Y/N)[N] ?Y
24-Mar-2016 01:06:45 %COPY-I-FILECPY: Files Copy - source URL
running-config destination URL flash://startup-config
24-Mar-2016 01:06:48 %COPY-N-TRAP: The copy operation was completed
successfully
Copy succeeded
W130SSG300-28PP#
W130SSG300-28PP#show mac address-table
Flags: I - Internal usage VLAN
Aging time is 300 sec

Vlan Mac Address Port Type
------------ --------------------- ---------- ----------
1 00:00:00:00:00:09 gi28 dynamic
1 00:23:24:8f:2c:26 gi28 dynamic
1 00:23:24:e7:25:2a gi28 dynamic
1 00:23:24:e7:29:20 gi28 dynamic
1 00:db:70:3f:23:e1 gi28 dynamic
1 1c:1d:86:c4:e8:55 gi3 dynamic
1 2c:59:e5:d8:9b:9f gi28 dynamic
1 30:f7:0d:5c:9e:fe gi28 dynamic
1 30:f7:0d:7c:5f:6e gi28 dynamic
1 30:f7:0d:7c:5f:79 gi28 dynamic
1 30:f7:0d:92:33:b4 gi28 dynamic
1 34:64:a9:6b:b3:96 gi28 dynamic
1 38:63:bb:01:bc:c9 gi28 dynamic
1 60:c7:98:8f:03:83 gi5 dynamic********************
1 60:c7:98:8f:03:84 gi19 dynamic********************
1 6c:4b:90:27:4e:03 gi28 dynamic
1 7c:69:f6:39:20:23 gi28 dynamic
1 7c:69:f6:39:20:50 gi28 dynamic
1 c4:b9:cd:33:6b:aa 0 self
1 e0:4f:43:21:95:fb gi28 dynamic
1 e0:4f:43:21:a0:fd gi3 dynamic
1 f0:29:29:77:1c:96 gi28 dynamic
1 f0:29:29:77:1c:c0 gi28 dynamic
2 04:e5:36:43:68:ae gi28 dynamic
2 58:55:ca:bb:f9:ae gi28 dynamic
2 b0:72:bf:da:43:9d gi28 dynamic
2 f0:29:29:77:1c:96 gi28 dynamic
100 00:00:0c:6c:b2:2c gi28 dynamic
100 00:d0:5f:01:33:00 gi28 dynamic
100 0c:27:24:30:37:7e gi28 dynamic
100 1c:1d:86:c4:e8:55 gi3 dynamic
100 f0:29:29:77:1c:96 gi28 dynamic

W130SSG300-28PP#

W130SSG300-28PP#show mac address-table
Flags: I - Internal usage VLAN
Aging time is 300 sec

Vlan Mac Address Port Type
------------ --------------------- ---------- ----------
1 00:00:00:00:00:09 gi28 dynamic
1 00:23:24:8f:2c:26 gi28 dynamic
1 00:23:24:e7:25:2a gi28 dynamic
1 00:23:24:e7:29:20 gi28 dynamic
1 00:db:70:3f:23:e1 gi28 dynamic
1 1c:1d:86:c4:e8:55 gi3 dynamic
1 2c:59:e5:d8:9b:9f gi28 dynamic
1 30:f7:0d:5c:9e:fe gi28 dynamic
1 30:f7:0d:7c:5f:6e gi28 dynamic
1 30:f7:0d:7c:5f:79 gi28 dynamic
1 30:f7:0d:92:33:b4 gi28 dynamic
1 34:64:a9:6b:b3:96 gi28 dynamic
1 38:63:bb:01:bc:c9 gi28 dynamic
1 6c:4b:90:27:4e:03 gi28 dynamic
1 7c:69:f6:39:20:23 gi28 dynamic
1 7c:69:f6:39:20:50 gi28 dynamic
1 c4:b9:cd:33:6b:aa 0 self
1 e0:4f:43:21:95:fb gi28 dynamic
1 e0:4f:43:21:a0:fd gi3 dynamic
1 f0:29:29:77:1c:96 gi28 dynamic
1 f0:29:29:77:1c:c0 gi28 dynamic
2 04:e5:36:43:68:ae gi28 dynamic
2 58:55:ca:bb:f9:ae gi28 dynamic
2 b0:72:bf:da:43:9d gi28 dynamic
2 f0:29:29:77:1c:96 gi28 dynamic
100 00:00:0c:6c:b2:2c gi28 dynamic
100 00:d0:5f:01:33:00 gi28 dynamic
100 0c:27:24:30:37:7e gi28 dynamic
100 1c:1d:86:c4:e8:55 gi3 dynamic
100 f0:29:29:77:1c:96 gi28 dynamic

W130SSG300-28PP#
W130SSG300-28PP#
W130SSG300-28PP#wr mem
Overwrite file [startup-config].... (Y/N)[N] ?Y
24-Mar-2016 01:06:45 %COPY-I-FILECPY: Files Copy - source URL
running-config destination URL flash://startup-config
24-Mar-2016 01:06:48 %COPY-N-TRAP: The copy operation was completed
successfully Copy succeeded W130SSG300-28PP# W130SSG300-28PP#show mac
address-table
Flags: I - Internal usage VLAN
Aging time is 300 sec

Vlan Mac Address Port Type
------------ --------------------- ---------- ----------
1 00:00:00:00:00:09 gi28 dynamic
1 00:23:24:8f:2c:26 gi28 dynamic
1 00:23:24:e7:25:2a gi28 dynamic
1 00:23:24:e7:29:20 gi28 dynamic
1 00:db:70:3f:23:e1 gi28 dynamic
1 1c:1d:86:c4:e8:55 gi3 dynamic
1 2c:59:e5:d8:9b:9f gi28 dynamic
1 30:f7:0d:5c:9e:fe gi28 dynamic
1 30:f7:0d:7c:5f:6e gi28 dynamic
1 30:f7:0d:7c:5f:79 gi28 dynamic
1 30:f7:0d:92:33:b4 gi28 dynamic
1 34:64:a9:6b:b3:96 gi28 dynamic
1 38:63:bb:01:bc:c9 gi28 dynamic
1 60:c7:98:8f:03:83 gi5 dynamic********************
1 60:c7:98:8f:03:84 gi19 dynamic********************
1 6c:4b:90:27:4e:03 gi28 dynamic
1 7c:69:f6:39:20:23 gi28 dynamic
1 7c:69:f6:39:20:50 gi28 dynamic
1 c4:b9:cd:33:6b:aa 0 self
1 e0:4f:43:21:95:fb gi28 dynamic
1 e0:4f:43:21:a0:fd gi3 dynamic
1 f0:29:29:77:1c:96 gi28 dynamic
1 f0:29:29:77:1c:c0 gi28 dynamic
2 04:e5:36:43:68:ae gi28 dynamic
2 58:55:ca:bb:f9:ae gi28 dynamic
2 b0:72:bf:da:43:9d gi28 dynamic
2 f0:29:29:77:1c:96 gi28 dynamic
100 00:00:0c:6c:b2:2c gi28 dynamic
100 00:d0:5f:01:33:00 gi28 dynamic
100 0c:27:24:30:37:7e gi28 dynamic
100 1c:1d:86:c4:e8:55 gi3 dynamic
100 f0:29:29:77:1c:96 gi28 dynamic

W130SSG300-28PP#

Conditions:
MAC address for some network devices stop from being learned until wr is re-issued

Workaround:
execute wr command or running config startup config

[sundar ganesh]

Hi

Am sorry, am not getting. Are suggesting me to put wr command for everytime?