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

    Note: See the hardware documentation for your particular model (SRX Series Services Gateways) for details about SRX Series devices. See Interfaces Feature Guide for Security Devices for a full discussion of interface naming conventions.

    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.

    In chassis cluster mode, all FPC related configuration is performed under edit chassis node node-id fpc hierarchy. In non-cluster mode, the FPC related configuration is performed under edit chassis fpc hierarchy.

    This topic describes the slot numbering and physical port and logical interface naming conventions for SRX Series devices in a chassis cluster and includes following sections:

    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.

    Table 1: Chassis Cluster Slot Numbering and Physical Port and Logical Interface Naming

    Model

    Chassis

    Maximum Slots Per Node

    Slot Numbering in a Cluster

    Management Physical Port/Logical Interface

    Control Physical Port/Logical Interface

    Fabric Physical Port/Logical Interface

    1500

    Node 0

    1

    0

    fxp0

    Dedicated Control port

    Any Ethernet port

    em0

    fab0

    Node 1

    7

    fxp0

    Dedicated Control port

    Any Ethernet port

    em0

    fab1

    550

    Node 0

    9 (PIM slots)

    0—8

    ge-0/0/0

    ge-0/0/1

    Any Ethernet port

    fxp0

    fxp1

    fab0

    Node 1

    9—17

    ge-9/0/0

    ge-9/0/1

    Any Ethernet port

    fxp0

    fxp1

    fab1

    340 and 345

    Node 0

    5 (PIM slots)

    0—4

    fxp0

    ge-0/0/1

    Any Ethernet port

    fxp0

    fxp1

    fab0

    Node 1

    5—9

    fxp0

    ge-5/0/1

    Any Ethernet port

    fxp0

    fxp1

    fab1

    320

    Node 0

    3 (PIM slots)

    0—2

    ge-0/0/0

    ge-0/0/1

    Any Ethernet port

    fxp0

    fxp1

    fab0

    Node 1

    3—5

    ge-3/0/0

    ge-3/0/1

    Any Ethernet port

    fxp0

    fxp1

    fab1

    300

    Node 0

    1(PIM slot)

    0

    ge-0/0/0

    ge-0/0/1

    Any Ethernet port

    fxp0

    fxp1

    fab0

    Node 1

    1

    ge-1/0/0

    ge-1/0/1

    Any Ethernet port

    fxp0

    fxp1

    fab1

    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

    Slot Numbering
in SRX300 Chassis Cluster

    Figure 2: Slot Numbering in SRX320 Chassis Cluster

    Slot Numbering
in SRX320 Chassis Cluster

    Figure 3: Slot Numbering in SRX340 Chassis Cluster

    Slot Numbering
in SRX340 Chassis Cluster

    Figure 4: Slot Numbering in SRX345 Chassis Cluster

    Slot Numbering
in SRX345 Chassis Cluster

    Figure 5: Slot Numbering in SRX550M Chassis Cluster

    Slot Numbering
in SRX550M Chassis Cluster

    Figure 6: Slot Numbering in SRX1500 Chassis Cluster

    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. The HA dedicated interface on SRX4600 supports 10-Gigabit Ethernet Interface.

    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.

    Table 2: Chassis Cluster Slot Numbering, and Physical Port and Logical Interface Naming for SRX4600 Devices

    Model

    Chassis Cluster

    Maximum Slots Per Node

    Slot Numbering in a Cluster

    Management Physical Port/Logical Interface

    Control Physical Port/Logical Interface

    Fabric Physical Port/Logical Interface

    SRX4600

    Node 0

    1

    0-7

    fxp0

    Dedicated control port, em0

    Dedicated fabric port, fab0

    Node 1

    8-15

    Dedicated fabric port, (for dual fabric-link), fab1

    40-Gigabit Ethernet port (xe)

    Table 3: Chassis Cluster Interface Renumbering for SRX4600

    Device

    Renumbering Constant

    Node 0 Interface Name

    Node 1 Interface Name

    SRX4600

    8

    xe-0/0/0

    xe-7/0/0

    Table 4: Chassis Cluster Fabric Interface Details for SRX4600

    Interfaces

    Used as Fabric Port?

    Supports Z-Mode Traffic?

    Supports MACsec?

    Dedicated fabric ports

    Yes

    Yes

    Yes

    8X10-Gigabit Ethernet Interface SFPP ports

    No

    No

    No

    4X40-Gigabit Ethernet Interface QSFP28 ports

    Yes

    Yes

    No

    4x10-Gigabit Ethernet Interface SFPP ports

    No

    No

    No

    2X100-Gigabit Ethernet Interface QSFP28 slots

    No

    No

    No

    Note: Mix and match of fabric ports are not supported. That is, you cannot use one 10-Gigabit Ethernet interface and one 40-Gigabit Ethernet interface for fabric links configuration. Dedicated fabric link supports only 10-Gigabit Ethernet Interface.

    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

    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

    Table 5: Chassis Cluster Slot Numbering, and Physical Port and Logical Interface Naming for SRX4100 and SRX4200 Devices

    Model

    Chassis Cluster

    Maximum Slots Per Node

    Slot Numbering in a Cluster

    Management Physical Port/Logical Interface

    Control Physical Port/Logical Interface

    Fabric Physical Port/Logical Interface

    SRX4100

    Node 0

    1

    0

    fxp0

    Dedicated control port, em0

    Dedicated fabric port, any Ethernet port (for dual fabric-link), fab0

    Node 1

    7

    Dedicated fabric port, and any Ethernet port (for dual fabric-link), fab1

    SRX4200

    Node 0

    1

    0

    fxp0

    Dedicated control port,em0

    Dedicated fabric port, and any Ethernet port (for dual fabric-link), fab0

    Node 1

    7

    Dedicated fabric port, and any Ethernet port (for dual fabric-link), fab1

    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

    Slot
Numbering in SRX4100 Chassis Cluster

    Figure 9: Slot Numbering in SRX4200 Chassis Cluster

    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).

    Table 6: Chassis Cluster Interface Renumbering for SRX4100 and SRX4200

    Device

    Renumbering Constant

    Node 0 Interface Name

    Node 1 Interface Name

    SRX4100

    7

    xe-0/0/0

    xe-7/0/0

    SRX4200

    7

    xe-0/0/1

    xe-7/0/1

    Note: On SRX4100 and SRX4200 devices, when the system comes up as chassis cluster, the xe-0/0/8 and xe-7/0/8 interfaces are automatically set as fabric interfaces links as shown in Table 3. You can set up another pair of fabric interfaces using any pair of 10-Gigabit interfaces to serve as the fabric between nodes. Note that, the automatically created fabric interfaces cannot be deleted. However, you can delete the second pair of fabric interfaces (manually configured interfaces).

    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.

    Table 7: Chassis Cluster Slot Numbering, and Physical Port and Logical Interface Naming for SRX5000-Line Devices

    Model

    Chassis Cluster

    Maximum Slots Per Node

    Slot Numbering in a Cluster

    Management Physical Port/Logical Interface

    Control Physical Port/Logical Interface

    Fabric Physical Port/Logical Interface

    5800

    Node 0

    12 (FPC slots)

    0—11

    Dedicated Gigabit Ethernet port

    Control port on an SPC

    Any Ethernet port

    fxp0

    em0

    fab0

    Node 1

    12—23

    Dedicated Gigabit Ethernet port

    Control port on an SPC

    Any Ethernet port

    fxp0

    em0

    fab1

    5600

    Node 0

    6 (FPC slots)

    0—5

    Dedicated Gigabit Ethernet port

    Control port on an SPC

    Any Ethernet port

    fxp0

    em0

    fab0

    Node 1

    6—11

    Dedicated Gigabit Ethernet port

    Control port on an SPC

    Any Ethernet port

    fxp0

    em0

    fab1

    5400

    Node 0

    3 (FPC slots)

    0—2

    Dedicated Gigabit Ethernet port

    Control port on an SPC

    Any Ethernet port

    fxp0

    em0

    fab0

    Node 1

    3—5

    Dedicated Gigabit Ethernet port

    Control port on an SPC

    Any Ethernet port

    fxp0

    em0

    fab1

    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

    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.

    Table 8: Chassis Cluster Slot Numbering, and Physical Port and Logical Interface Naming for SRX1400, SRX3400, and SRX3600

    Model

    Chassis

    Maximum Slots Per Node

    Slot Numbering in a Cluster

    Management Physical Port/Logical Interface

    Control Physical Port/Logical Interface

    Fabric Physical Port/Logical Interface

    SRX3600

    Node 0

    13 (CFM slots)

    0 — 12

    Dedicated Gigabit Ethernet port

    Dedicated Gigabit Ethernet port

    Any Ethernet port

    fxp0

    em0

    fab0

    Node 1

    13 — 25

    Dedicated Gigabit Ethernet port

    Dedicated Gigabit Ethernet port

    Any Ethernet port

    fxp0

    em0

    fab1

    SRX3400

    Node 0

    8 (CFM slots)

    0 — 7

    Dedicated Gigabit Ethernet port

    Dedicated Gigabit Ethernet port

    Any Ethernet port

    fxp0

    em0

    fab0

    Node 1

    8 — 15

    Dedicated Gigabit Ethernet port

    Dedicated Gigabit Ethernet port

    Any Ethernet port

    fxp0

    em0

    fab1

    SRX1400

    Node 0

    4 (FPC slots)

    0 — 3

    Dedicated Gigabit Ethernet port

    Dedicated Gigabit Ethernet port

    Any Ethernet port

    fxp0

    em0

    fab0

    Node 1

    4 — 7

    Dedicated Gigabit Ethernet port

    Dedicated Gigabit Ethernet port

    Any Ethernet port

    fxp0

    em0

    fab1

    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

    Chassis
Cluster Slot Numbering for SRX3600 Devices

    Figure 12: Chassis Cluster Slot Numbering for SRX3400 Devices

    Chassis
Cluster Slot Numbering for SRX3400 Devices

    Figure 13: Chassis Cluster Slot Numbering for SRX1400 Devices

    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

    Chassis
Cluster Slot Numbering for SRX650 Devices

    Figure 15: Chassis Cluster Slot Numbering for SRX550 Devices

    Chassis
Cluster Slot Numbering for SRX550 Devices

    Figure 16: Chassis Cluster Slot Numbering for SRX240 Devices

    Chassis
Cluster Slot Numbering for SRX240 Devices

    Figure 17: Chassis Cluster Slot Numbering for SRX220 Devices

    Chassis
Cluster Slot Numbering for SRX220 Devices

    Figure 18: Chassis Cluster Slot Numbering for SRX210 Devices

    Chassis
Cluster Slot Numbering for SRX210 Devices

    Figure 19: Chassis Cluster Slot Numbering for SRX100 Devices

    Chassis
Cluster Slot Numbering for SRX100 Devices

    Caution: Layer 2 switching must not be enabled on an SRX Series device when chassis clustering is enabled. If you have enabled Layer 2 switching, make sure you disable it before enabling chassis clustering.

    The factory default configuration for SRX100, SRX210, and SRX220 devices automatically enables Layer 2 Ethernet switching. Because Layer 2 Ethernet switching is not supported in chassis cluster mode, if you use the factory default configuration for these devices, you must delete the Ethernet switching configuration before you enable chassis clustering. See Disabling Switching on SRX100, SRX210, and SRX220 Devices Before Enabling Chassis Clustering.

    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

    slot/port module/port

    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).

    Modified: 2018-04-03