Symptom

Software MAC table (show mac address-table) points to the correct port. Hardware Mac table shows inconsistency between forwarding engines(FE) on the M3 line card. Some forwarding engines point to incorrect index which maps to the port that is admin down N7K# sh mac address-table address xmac.addr.host vlan 1178 Note: MAC table entries displayed are getting read from software. Use the 'hardware-age' keyword to get information related to 'Age' Legend: * - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC age - seconds since last seen,+ - primary entry using vPC Peer-Link, E - EVPN entry (T) - True, (F) - False , ~~~ - use 'hardware-age' keyword to retrieve age info VLAN/BD MAC Address Type age Secure NTFY Ports/SWID.SSID.LID ---------+-----------------+--------+---------+------+----+------------------ * 1178 xmac.addr.host dynamic ~~~ F F Po4 N7K# sh hardware mac address-table 2 address xmac.addr.host vlan 1178 FE | Valid| PI| BD | MAC | Index| Stat| SW | Modi| Age| Tmr| GM| Sec| TR| NT| RM| RMA| Cap| Fld|Always| PV | RD| NN| UC|PI_E8| SWID| SSWID| LID | | | | | | ic | | fied|Byte| Sel| | ure| AP| FY| | |TURE| | Learn| | | | | | | | ---+------+---+------+---------------+-------+-----+-----+-----+----+----+---+----+---+---+---+----+----+----+------|----|---|---|---|-----|-----|------|------- 0 1 0 177 xmac.addr.host 0x00b85 0 0x089 1 237 1 0 0 0 0 0 0 0 0 0 0x00 1 0 1 0 0x000 0x000 0x00b85 1 1 1 177 xmac.addr.host 0x00e03 0 0x089 1 109 1 0 0 0 0 0 0 0 0 0 0x00 0 0 1 0 0x000 0x000 0x00e03 2 1 0 177 xmac.addr.host 0x00b85 0 0x089 1 237 1 0 0 0 0 0 0 0 0 0 0x00 1 0 1 0 0x000 0x000 0x00b85 po4 index is 0xe03 e5/21 index is 0x00b85. All FEs should point to po4.

Conditions

Issue seen for M3 line cards. Exact Trigger condition unknown

Workaround

Clear the inconsistent mac address clear mac address-table dynamic address

Further Problem Description