topic Switch Extreme X670G2 can't learn mac because of full table in ExtremeSwitching (EXOS/Switch Engine)

Switch Extreme X670G2 can't learn mac because of full table

earroyo — Sun, 01 Dec 2019 02:50:34 GMT

Hi , We have a Switch Extreme X670G2 that cant learn mac because of full table, it appears the next log:
29-Nov-2019 04:58:54 Failed to add vlan translation entry on port 1:12 oldvlanid: 2271 newvlanId: 2271
29-Nov-2019 04:58:54 Failed to add egress vlan translation entry on port 1:12 due to "Table full".

But the table is not full because it could learn more macs with other vlans, also the vlan doesnt have any translate configuration

MIREXTRAGR.14 # show switch

SysName: MIREXTRAGR
SysLocation:
SysContact: support@extremenetworks.com, +1 888 257 3000
System MAC: 00:04:96:A1:CE:68
System Type: X670G2-48x-4q

SysHealth check: Enabled (Normal)
Recovery Mode: All
System Watchdog: Enabled

Current Time: Sat Nov 30 13:50:07 2019
Timezone: [Auto DST Disabled] GMT Offset: -300 minutes, name is not set.
Boot Time: Sat Aug 31 22:21:27 2019
Boot Count: 6
Next Reboot: None scheduled
System UpTime: 90 days 15 hours 28 minutes 39 seconds

Current State: OPERATIONAL
Image Selected: primary
Image Booted: primary
Primary ver: 22.3.1.4
patch1-4
Secondary ver: 22.3.1.4

Config Selected: primary.cfg
Config Booted: primary.cfg
Config Automatic: NONE

primary.cfg Created by ExtremeXOS version 22.3.1.4
4794914 bytes saved on Sat Nov 30 13:41:21 2019

LAA MAC: Locally Administered MAC Address Disabled
MIREXTRAGR.15 #

Re: Switch Extreme X670G2 can't learn mac because of full table

FredrikB — Wed, 04 Dec 2019 16:26:03 GMT

Hi!

You may be experiencing a situation where the MAC address table (FDB) is full in some aspects. In most switches (not just Extreme), the FDB is populated using a “hash tree”. This means that for some MAC and VLAN combinations the tree can become congested even if the number of addresses is not at the max limit.

What does “show fdb stats” say?

/Fredrik

Re: Switch Extreme X670G2 can't learn mac because of full table

earroyo — Sat, 07 Dec 2019 01:44:56 GMT

Hi Fredik, Sorry for answer with delay, this is the output of the command

SBJ-EXT_AGREG.2 # show fdb stats

Total: 10871 Static: 0 Perm: 0 Dyn: 10871 Dropped: 2
FDB Aging time: 300