Getting Started 
23
 M4300 Series and M4300-96X Fully Managed Switches User Manual
The following table describes the naming convention for all interfaces available on the switch.
Slot and Port Numbering for Switch Model M4300-96X
For switch model M4300-96X, the slots in the upper row of the chassis are numbered 1 
through 6 from left to right. These slots can support PoE. The slots in the lower row of the 
chassis are numbered 7 through 12 from left to right. These slots do not support PoE.
The port numbering depends on the port card.
Table 3.  Naming conventions for interfaces
Interface Description Example
Physical interfaces for all 
M4300 switch models except 
for model M4300-96X
The physical ports are Gigabit Ethernet or 
multispeed 10G Ethernet interfaces. The 
interface number consists of the switch unit 
number from 1 to 8, the slot number (which 
is always 0), and the port number
, which is 
a sequential number starting from 1.
1/0/1, 1/0/2, 1/0/3, and so on
2/0/1, 2/0/2, 2/0/3, and so on
3/0/1, 3/0/2, 3/0/3, and so on
Physical interfaces for model 
M4300-96X
The physical ports are Gigabit Ethernet, 
multispeed 10G Ethernet, or 40G Ethernet 
interfaces. 
The interface number consists of 
the switch unit number from 1 to 8, the port 
card number from 1 to 12, and the port 
number from 1 to 8.
Note: The numbering for the APM402XL 
40G port card differs (see 
Slot and Port 
Numbering on the 
APM402XL Port Card on 
page 24).
See Slot and Port Numbering for 
Switch Model M4300-96X 
on 
page  23.
Link aggregation group (LAG) LAG interfaces are logical interfaces that 
are used only for bridging functions. 
LAG 1, LAG 2, LAG 3, and so on
CPU management interface This is the internal switch interface 
responsible for the switch base MAC 
address. 
This interface is not configurable 
and is always listed in the MAC 
Address 
Table.
0/15/1
Routing VLAN interfaces This is an interface used for routing 
functionality
.
VLAN 1, VLAN 2, VLAN 3, and 
so on