L2 Table full OS6450

[MartK]

Hello,
We have problem with a mac-address that doesn't show up on port 1/2 in a OS6450-U24. The switch is running on 6.7.2.99.R07.
The log shows:

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WED OCT 28 07:35:11 2020         BRIDGE    info L2 Table full mac=xx:xx:xx:xx:xx:xx vlan=1002
WED OCT 28 07:35:44 2020         BRIDGE    info ^repeated 35 times
WED OCT 28 07:35:45 2020         BRIDGE    info L2 Table full mac=yy:yy:yy:yy:yy:yy vlan=1005
WED OCT 28 07:35:45 2020         BRIDGE    info L2 Table full mac=xx:xx:xx:xx:xx:xx vlan=1002
WED OCT 28 07:41:46 2020         BRIDGE    info ^repeated 341 times
WED OCT 28 07:41:50 2020            SSH    info Session 28 New SSH Connection from z.z.z.z port 6565
WED OCT 28 07:41:51 2020         BRIDGE    info L2 Table full mac=xx:xx:xx:xx:xx:xx vlan=1002
WED OCT 28 07:44:46 2020         BRIDGE    info ^repeated 162 times
WED OCT 28 07:44:47 2020         BRIDGE    info L2 Table full mac=yy:yy:yy:yy:yy:yy vlan=1005
WED OCT 28 07:44:48 2020         BRIDGE    info L2 Table full mac=xx:xx:xx:xx:xx:xx vlan=1002

I've changed the real mac-addresses to xx:xx:xx:xx:xx:xx and yy:yy:yy:yy:yy:yy. VLAN 1002 is set on 1/2 (customer) and 1/25 (uplink).

show mac-address-table count gives me:

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Mac Address Table Count:
  Permanent Address Count            = 0,
  DeleteOnReset Address Count        = 0,
  DeleteOnTimeout Address Count      = 0,
  Dynamic Learned Address Count      = 3135,
  Static Multicast Address Count     = 0,
  Total MAC Address In Use           = 3135

The datasheet says:

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Layer-2 switching
¬ Up to 16,000 MACs
¬ Up to 4000 VLANs
¬ Up to 2000 ACLs
¬ Latency: < 4 μs
¬ Max Frame: 9216 bytes (jumbo)

The number of mac-addresses on 1/2 is around 100. On VLAN 1002(1/2 + 1/25) there are around 1000 mac-addresses.

Port-security for 1/2:

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port-security 1/2 admin-status enable
port-security 1/2 maximum 200
port-security 1/2 VIOLATION DISCARD

There is no port-security for 1/25.

Is there a global setting for number of mac-addresses in the mac-address table?

[silvio]

all seems to be okay - max. 16000 - only 3000 used. But this error message????
Are you able to reboot the switch, or to delete all the mac-table - or at the spec. ports (no mac-address-table learned)?
Is the device with this mac direct connected to this switch or via another device/switch?
BR Silvio

[MartK]

I removed all mac-addresses on 1/2 (no mac-address-table learned 1/2) but the missing mac-address did not show up.
The log still said "L2 table full".
After that I removed all mac-addresses in the switch (no mac-address-table learned).
The missing mac-address now showed up on 1/2.

I still got "L2 table full" but with another mac-address. I didn't get the message that often but I still got it.

We have a log-server and this is the only switch out of 200 that have shown this error message during the last year.

I rebooted the switch two hour ago and that seems to have done the trick. No error message yet.
Mac count is over 3000.

When I rebooted the switch the uptime was only 192 days. I will report back if the error message comes back.
Might need to replace the switch then.

[silvio]

thanks for the answer. Hope it will not happen again.
regards
Silvio