Fix 'show mac' output when FDB entry for default vlan is None instead of 1

[busterswt]

• Fixes an issue where VLAN ID of None results in "int() argument must be a string, a bytes-like object or a number, not 'NoneType'" error.

Signed-off-by: James Denton [email protected]

What I did

Fixed "show mac" command execution failure when the system has an FDB entry linked to default Vlan 1 that cannot be looked up (returns None).

How I did it

If VLAN ID is None, assume it is 1 and allow the entry to be listed.

How to verify it

Pass traffic through an unconfigured interface and perform a 'show mac' or 'fdbshow' command.

Previous command output (if the output of a command-line utility has changed)

admin@sonic:~$ show mac
int() argument must be a string, a bytes-like object or a number, not 'NoneType'

New command output (if the output of a command-line utility has changed)

admin@sonic:~$ show mac
No. Vlan MacAddress Port Type

---

1       1  98:03:9B:BE:E9:68  Ethernet60    Dynamic
2       1  6C:3B:E5:BD:14:D0  Ethernet21    Dynamic
3       1  00:0C:29:E6:70:A2  Ethernet2     Dynamic
4       1  3C:FD:FE:9E:8A:C9  PortChannel2  Dynamic
5       1  6C:6C:D3:CC:04:41  Ethernet60    Dynamic
6       6  FA:16:3E:27:E2:C7  Ethernet2     Dynamic
7       6  6C:6C:D3:CC:04:33  Ethernet60    Dynamic
8      20  00:16:3E:22:62:4F  Ethernet2     Dynamic
9      20  00:16:3E:BF:84:84  Ethernet2     Dynamic

10 20 00:16:3E:50:A3:35 Ethernet2 Dynamic
11 20 00:16:3E:1A:74:BD Ethernet2 Dynamic
12 20 00:16:3E:37:EE:EC Ethernet2 Dynamic
13 20 00:16:3E:5A:71:A2 Ethernet2 Dynamic

[busterswt]

VLAN 'None' (default/1) is now excluded:

admin@sonic:~$ fdbshow
No. Vlan MacAddress Port Type

---

1       6  FA:16:3E:27:E2:C7  Ethernet2   Dynamic
2       6  6C:6C:D3:CC:04:33  Ethernet60  Dynamic
3      20  00:16:3E:EE:64:C2  Ethernet2   Dynamic
4      20  00:16:3E:8E:31:F6  Ethernet2   Dynamic
5      20  00:16:3E:6D:BE:65  Ethernet2   Dynamic
6      20  00:16:3E:1A:74:BD  Ethernet2   Dynamic

...
48 23 9C:B6:54:96:07:5C Ethernet0 Dynamic
49 23 6C:3B:E5:BD:14:D4 Ethernet49 Dynamic
50 23 F0:92:1C:0D:9E:C4 Ethernet48 Dynamic
51 102 FA:16:3E:BF:FA:FD Ethernet20 Dynamic
52 102 E4:1F:7B:9A:FC:4B Ethernet60 Dynamic
53 102 6C:6C:D3:CC:04:33 Ethernet60 Dynamic