Understanding SRX Series Chassis Cluster Slot Numbering and Physical Port and Logical Interface Naming

After the devices are connected as a cluster, the slot numbering on one device changes and thus the interface numbering will change. The slot number for each slot in both nodes is determined using the following formula:

cluster slot number = (node ID * maximum slots per node) + local slot number

In chassis cluster mode, the interfaces on the secondary node are renumbered internally.

Chassis Cluster Slot Numbering and Physical Port and Logical Interface Naming for SRX300, SRX320, SRX340, SRX345, SRX550M, and SRX1500 Devices

For SRX340 and SRX345 devices, the fxp0 interface is a dedicated port. For SRX300 and SRX320 devices, after you enable chassis clustering and reboot the system, the built-in interface named ge-0/0/0 is repurposed as the management interface and is automatically renamed fxp0.

For SRX300, SRX320, SRX340, and SRX345 devices, after you enable chassis clustering and reboot the system, the build-in interface named ge-0/0/1is repurposed as the control interface and is automatically renamed fxp1.

For SRX550M devices, control interfaces are dedicated Gigabit Ethernet ports.

SRX1500 devices have 16 GE interfaces and 4 XE ports.

Table 1 shows the slot numbering, as well as the physical port and logical interface numbering, for both of the SRX Series devices that become node 0 and node 1 of the chassis cluster after the cluster is formed.

After you enable chassis clustering, the two chassis joined together cease to exist as individuals and now represent a single system. As a single system, the cluster now has twice as many slots. (See Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, and Figure 6.)

Figure 1: Slot Numbering in SRX300 Chassis Cluster

Figure 2: Slot Numbering in SRX320 Chassis Cluster

Figure 3: Slot Numbering in SRX340 Chassis Cluster

Figure 4: Slot Numbering in SRX345 Chassis Cluster

Figure 5: Slot Numbering in SRX550M Chassis Cluster

Figure 6: Slot Numbering in SRX1500 Chassis Cluster

Chassis Cluster Slot Numbering and Physical Port and Logical Interface Naming for SRX4600 Devices

The SRX4600 devices use dedicated HA control and fabric ports.

Table 2 and Table 3 show the slot numbering, as well as the physical port and logical interface numbering, for both of the SRX Series devices that become node 0 and node 1 of the chassis cluster after the cluster is formed.

Figure 7 shows the slot numbering for both of the SRX Series devices that become node 0 and node 1 of the chassis cluster after the cluster is formed.

Figure 7: Slot Numbering in SRX4600 Chassis Cluster

Chassis Cluster Slot Numbering and Physical Port and Logical Interface Naming for SRX4100 and SRX4200 Devices

The SRX4100 and SRX4200 devices use two 1-Gigabit Ethernet/10-Gigabit Ethernet ports, labeled as CTL and FAB as control port and fabric port respectively.

Supported fabric interface types for SRX4100 and SRX4200 devices are 10-Gigabit Ethernet (xe) (10-Gigabit Ethernet Interface SFP+ slots).

Table 5 shows the slot numbering, as well as the physical port and logical interface numbering, for both of the SRX Series devices that become node 0 and node 1 of the chassis cluster after the cluster is formed

Figure 8 and Figure 9 shows the slot numbering for both of the SRX Series devices that become node 0 and node 1 of the chassis cluster after the cluster is formed.

Figure 8: Slot Numbering in SRX4100 Chassis Cluster

Figure 9: Slot Numbering in SRX4200 Chassis Cluster

The node 1 renumbers its interfaces by adding the total number of system FPCs to the original FPC number of the interface. For example, see Table 6 for interface renumbering on the SRX Series devices (SRX4100 and SRX4200).

Chassis Cluster Slot Numbering and Physical Port and Logical Interface Naming for SRX5800, SRX5600, and SRX5400 Devices

For chassis clustering, all SRX Series devices have a built-in management interface named fxp0. For most SRX Series devices, the fxp0 interface is a dedicated port.

For the SRX5000 line, control interfaces are configured on SPCs.

Table 7 shows the slot numbering, as well as the physical port and logical interface numbering, for both of the SRX Series devices that become node 0 and node 1 of the chassis cluster after the cluster is formed.

After you enable chassis clustering, the two chassis joined together cease to exist as individuals and now represent a single system. As a single system, the cluster now has twice as many slots. (See Figure 10.)

Figure 10: Slot Numbering in SRX5800 Chassis Cluster

Chassis Cluster Slot Numbering and Physical Port and Logical Interface Naming for SRX3600, SRX3400, and SRX1400

Table 8 shows the slot numbering, as well as the physical port and logical interface numbering, for both of the SRX Series devices that become node 0 and node 1 of the chassis cluster after the cluster is formed.

Information about chassis cluster slot numbering is also provided in Figure 11, Figure 12 and Figure 13.

Figure 11: Chassis Cluster Slot Numbering for SRX3600 Devices

Figure 12: Chassis Cluster Slot Numbering for SRX3400 Devices

Figure 13: Chassis Cluster Slot Numbering for SRX1400 Devices

Chassis Cluster Slot Numbering and Physical Port and Logical Interface Naming for SRX650, SRX550, SRX240, SRX210, SRX110, and SRX100

Information about chassis cluster slot numbering is also provided in Figure 14, Figure 15, Figure 16, Figure 17, Figure 18, and Figure 19.

Figure 14: Chassis Cluster Slot Numbering for SRX650 Devices

Figure 15: Chassis Cluster Slot Numbering for SRX550 Devices

Figure 16: Chassis Cluster Slot Numbering for SRX240 Devices

Figure 17: Chassis Cluster Slot Numbering for SRX220 Devices

Figure 18: Chassis Cluster Slot Numbering for SRX210 Devices

Figure 19: Chassis Cluster Slot Numbering for SRX100 Devices

For SRX100, SRX210, and SRX220 devices, after you enable chassis clustering and reboot the system, the built-in interface named fe-0/0/6 is repurposed as the management interface and is automatically renamed fxp0.

For SRX240, SRX550, and SRX650, devices, control interfaces are dedicated Gigabit Ethernet ports. For SRX100, SRX210, and SRX220 devices, after you enable chassis clustering and reboot the system, the built-in interface named fe-0/0/7 is repurposed as the control interface and is automatically renamed fxp1.

In chassis cluster mode, the interfaces on the secondary node are renumbered internally. For example, the management interface port on the front panel of each SRX210 device is still labeled fe-0/0/6, but internally, the node 1 port is referred to as fe-2/0/6.

FPC Slot Numbering in SRX Series Device Cards

SRX5600 and SRX5800 devices have Flex I/O Cards (Flex IOCs) that have two slots to accept the following port modules:

• SRX-IOC-4XGE-XFP 4-Port XFP

• SRX-IOC-16GE-TX 16-Port RJ-45

• SRX-IOC-16GE-SFP 16-Port SFP

You can use these port modules to add from 4 to 16 Ethernet ports to your SRX Series device. Port numbering for these modules is

where slot is the number of the slot in the device in which the Flex IOC is installed; port module is 0 for the upper slot in the Flex IOC or 1 for the lower slot when the card is vertical, as in an SRX5800 device; and port is the number of the port on the port module. When the card is horizontal, as in an SRX5400 or SRX5600 device, port module is 0 for the left-hand slot or 1 for the right-hand slot.

SRX5400 devices support only SRX5K-MPC cards. The SRX5K-MPC cards also have two slots to accept the following port modules:

• SRX-MIC-10XG-SFPP 10-port-SFP+ (xe)

• SRX-MIC-20GE-SFP 20-port SFP (ge)

• SRX-MIC-1X100G-CFP 1-port CFP (et)

• SRX-MIC-2X40G-QSFP 2-port QSFP (et)

See the hardware guide for your specific SRX Series model (SRX Series Services Gateways).