Ports and Interfaces

Network Ports on the

The support a maximum throughput of 1.6 Tbps through the WAN ports located in the front panel. A total of 26 WAN ports exist, divided into four groups. Each group is capable of a maximum of 400-Gbps throughput (see Figure 1). Depending on the optics and the ports used, the router can support speeds of 400 Gbps, 100 Gbps, 50 Gbps, 40 Gbps, 25 Gbps, 10 Gbps, and 1 Gbps.

Figure 1: WAN Port Group Arrangement Diagram of a Juniper Networks MX Series MX301 router showing port layout and port groups labeled as Port Group 1 to Port Group 4. Ports are color-coded by supported speeds: yellow for 1-400GbE, green for 1-400GbE, purple for 1-100GbE, orange for 1-50GbE, and blue for 1-100GbE. All port groups support up to 400GbE.

Diagram of a Juniper Networks MX Series MX301 router showing port layout and port groups labeled as Port Group 1 to Port Group 4. Ports are color-coded by supported speeds: yellow for 1-400GbE, green for 1-400GbE, purple for 1-100GbE, orange for 1-50GbE, and blue for 1-100GbE. All port groups support up to 400GbE.

Table 1 summarizes the port speed capability of .

Table 1: Network Ports
Form Factor	Port Component	Port Count	Port Number	Speeds Supported
QSFP	QSFP56-DD	2	0, 22	400GbE 4x100GbE 8x50GbE 3x100GbE 2x100GbE 100GbE 1x25GbE 1x10GbE 1GbE
	QSFP56-DD	2	12, 13	400GbE 4x100GbE 8x50GbE 3x100GbE 2x100GbE 100GbE 4x25GbE 4x10GbE 40GbE 4x1GbE
	QSFP28	4	1, 3, 23, 25	100GbE 4x25GbE 40GbE 4x10GbE 1x25GbE 1x10GbE 4x1GbE 1GbE
	QSFP28	2	2, 24	100GbE 1x25GbE 1x10GbE 1GbE
SFP	SFP, SFP+, SFP28, SFP56	16	4–11, 14–21	50GbE 25GbE 10GbE 1GbE

See the Port Checker Tool for information on port combinations, port speeds, and channelizations supported on the .

See the Hardware Compatibility Tool for a list of all supported optics for the .

Interface Naming on the

The ports on the have interfaces associated with them in . These interfaces follow the naming convention described below:

type-fpc/pic/port:channel

type—Media type of the interface. For some interfaces, the media type depends on the transceiver plugged into the physical port.
- ge—1 Gigabit Ethernet (GbE) interface
- xe—10 GbE interface
- et—25/40/50/100/200/400 GbE interfaces
fpc—Flexible PIC Concentrator. On the , FPC number is 0.
pic—Physical Interface Card. On the , PIC number is 0.
port—You can check the port number from the front panel of the .
channel—Applicable only for channelized interfaces.

Interfaces on the

Each network port on the has a unique interface on associated with it.

You can use the show chassis hardware and show interfaces terse commands to view the hardware, installed transceivers, and corresponding interfaces.

The example below shows the actual hardware or transceivers plugged into a device and how creates the corresponding interfaces. The output has been truncated to only show the relevant sections.

Output of show chassis hardware command on MX301:

Output of show chassis hardware command on MX301-M:

Output of show interfaces terse command on :

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Network Ports on the

Interface Naming on the

Interfaces on the