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Port Speed on SRX4600

 
Summary

Learn about port speed on SRX4600 devices, support for multiple port speed details, guidelines and how to configure the port speed.

Port Speed Overview

For information on channelized and non-channelized interface naming formats and how to configure an SRX4600 at port level and PIC level, see port speed

Port Speed on SRX4600 Overview

Table 1 discusses the details of port speed on SRX4600.

Table 1: Port Speed Details and Description

Details

Description

Interfaces

  • QSFP28 ports: Four 40/100-Gigabit Ethernet QSFP28 (quad small form-factor pluggable) ports

  • SFP+ ports: Eight 1/10-Gigabit Ethernet SFP+ ports

Supported on

For information about platforms support, see hardware compatibility tool (HCT).

Chassis cluster ports (PIC 0, FPC 0)

  • Four chassis cluster ports are referred to as PIC 0 ports of FPC 0. Two are:

    • Control CTL ports. You can configure the two control ports to operate at 1-Gbps speed. Refer to speed (Chassis Cluster) for more details.

    • Fabric FAB ports.

  • Default port speed: 10 Gbps.

QSFP28 or QSFP+ Ports (PIC 0, FPC 1) with port numbers 0 through 3.

  • Configure different ports speeds at the port level or at the PIC level. Configure one or all four 10-Gigabit Ethernet or 100-Gigabit Ethernet ports operating at 10-Gigabit Ethernet mode to operate in 1-Gigabit Ethernet mode.

  • Default port speed: 40 Gbps.

  • Channelize the 40 Gigabit Ethernet ports into four 10-Gigabit Ethernet interfaces by plugging in QSFPP-4X10-Gigabit Ethernet optics by using the speed command, and suitable breakout cables.

  • Four 40 or 100-Gigabit Ethernet QSFP28 ports (PIC 0 ports of FPC 1) support QSFP28 or QSFP+ transceivers.

SFP+ ports (PIC 1, FPC 1) with port numbers 0 through 7.

  • To configure 1-Gbps speed, use the speed (Gigabit Ethernet interface) command.

  • Default port speed: 10 Gbps with QSFP+ optics.

  • Eight 1X10-Gigabit Ethernet SFP+ ports are referred to as PIC 1 ports of FPC 1 and support SFP+ transceivers.

1-Gbps support

  • The 1-Gbps operation mode is only supported in non-autonegotiation mode. If autonegotiation mode is enabled by default at the remote end, then you must disable it.

  • Copper SFP is not supported on SRX4600 devices.

  • The interface that is already operating at 10-Gigabit Ethernet mode can be configured to operate at 1-Gigabit Ethernet mode.

40-Gbps support

  • SRX4600 supports 40-Gigabit Ethernet breakouts only in PIC mode. For example, in the PIC mode:

    • To configure all 40-Gigabit Ethernet ports of PIC 0, execute the set chassis fpc 1 pic 0 pic-mode 10G statement.

    • To set only the first two 40-Gigabit Ethernet ports, execute the set chassis fpc 1 pic 0 pic-mode 10G number-of-ports 2 statement. This configuration sets only the first two ports of 40-Gigabit Ethernet port and disables the last two ports disabled. Hence, the last two ports cannot be used as 40-Gigabit Ethernet ports after this configuration. Reboot the device or chassis cluster for the changed configuration to take effect.

Table 2 describes interface naming convention for 40-Gigabit Ethernet interface channelized as 10-Gigabit Ethernet interface:

Table 2: Interface Naming convention for SRX4600

Interface Type and Example

Example

4x10-Gigabit Ethernet

When 40-Gigabit Ethernet port et-1/0/0 is converted to 4x10-Gigabit Ethernet ports, the naming convention of 10-Gigabit Ethernet port is:

xe-1/0/0:0

xe-1/0/0:1

xe-1/0/0:2

xe-1/0/0:3

You can view the PIC port speeds by executing show chassis pic command. For more information, see SRX4600 Services Gateway Overview and Supported Active Physical Ports on SRX4600 to Prevent Oversubscription.

Supported Active Physical Ports on SRX4600 to Prevent Oversubscription

For information on what is oversubscription, see What is Oversubscription?. For more information on supported port modes, see SRX4600 Gateway Rate-Selectability Overview.

To prevent the oversubscription, configure the number of active ports operating at the configured speed by using the number-of-ports statement. Interfaces are created only for the active ports.

The maximum speed capacity of SRX4600 devices is 400 Gbps and cannot be oversubscribed. In SRX4600 devices, the network ports are available in two groups, referred to as PICs. With restrictions around the number and type of ports to be configured without oversubscription.

If you try to commit an invalid configuration, the configuration gets committed, but the port is not activated. This is because Junos OS allows you to configure a port before a line card is inserted. You will get an error message in the output of the show chassis alarms command and also in the log messages. For example, 4x100GE along with 8X10GE is an invalid configuration.

Configuring Active Ports on SRX4600

In this scenario, the port numbers are configured (with number-of-ports statement) but the port speed is not configured.

Table 3 summarizes the active ports with number-of-ports configured and rate selectability at PIC-level configuration for an SRX4600.

Table 3: Port Speed at PIC level with number-of-ports on SRX4600

PIC

Number of Ports

Active Ports at PIC Level

10-Gigabit Ethernet

40-Gigabit Ethernet

100-Gigabit Ethernet

PIC 0

0

-

-

-

1

0

0

0

2

0, 1

0, 1

0, 1

3

0, 1, 2

0, 1, 2

0, 1, 2

4

0, 1, 2, 3

0, 1, 2, 3

0, 1, 2, 3

PIC 1

0

-

-

-

1

0

-

-

2

0, 1

-

-

3

0, 1, 2

-

-

4

0, 1, 2, 3

-

-

5

0, 1, 2, 3, 4

-

-

6

0, 1, 2, 3, 4, 5

-

-

7

0, 1, 2, 3, 4, 5 ,6

-

-

8

0, 1, 2, 3, 4, 5, 6, 7

-

-

Table 4 summarizes the maximum number of Gigabit Ethernet ports at PIC and port levels:

Table 4: Maximum number of Gigabit Ethernet ports at PIC and Port Level

Maximum Ports

Maximum Number of Ports at PIC Mode (on PIC0 and PIC1)

Maximum Ports Configurable at Port Mode (on PIC0 and PIC1)

10 Gigabit Ethernet Ports

24

16 ports from PIC 0 and 8 Ports from PIC 1.

20

Refers to 12 ports from PIC 0 and 8 ports from PIC 1.

40 Gigabit Ethernet Ports

4

Only 4 ports from PIC 0. PIC 1 supports only 10 Gbps Speed.

4

100 Gigabit Ethernet Ports

4

Only 4 ports from PIC 0. PIC 1 supports only 10 Gbps speed.

4