Expert Advice: Channelizing Ports for Network Switches by Using Network Director

By Elevate posted 12-12-2016 21:20



Various models of Juniper Networks switches support port channelization of 40-Gigabit Ethernet QSFP+ ports. This means that these 40-Gigabit Ethernet QSFP+ ports can be subdivided into four 10-Gigabit Ethernet channels. Each of these converted 10-Gigabit Ethernet ports is represented by the port number followed by a colon and channel number.



Consider a QFX3500 standalone switch with port 1 on PIC 1, which acts as a 40-Gigabit Ethernet QSFP+ port. You want to channelize this port (currently named et-0/1/1). This port can be converted into four 10-Gigabit Ethernet ports named xe-0/1/1:0, xe-0/1/1:1, xe-0/1/1:2, and xe-0/1/1:3 respectively. 


You can then use QSFP+ transceivers to connect the 10-Gigabit Ethernet ports to other servers, storage devices, and switches.



Port Channelization in Network Director


Network Director supports port channelization for standalone devices, Virtual Chassis (VC), Virtual Chassis Fabric (VCF), and so on.


These devices support port channelization for QSFP+ ports. Besides QSFP+ ports, some ports are QSFP28 capable (this varies from device to device) where these QSFP28 ports support 100-Gigabit Ethernet QSFP28 transceivers.


In devices such as QFX5200-32C, the 100-Gigabit Ethernet ports can also be channelized using breakout cables to either two independent 50-Gigabit Ethernet ports or four independent 25-Gigabit Ethernet ports. Network Director automates support for various port speeds, which include 10g, 25g, 40g, 50g, and 100g (as per device specifications).


Steps to Channelize Ports by Using Network Director

Network Director helps you channelize a port or ports of a single device or multiple devices with options for various port speeds as per device specifications. Here, this is labeled "Convert Ports."


To set up and channelize ports of devices by using Network Director:

  1. From the Data center ELS and the Data center Non-ELS, select the type of devices whose ports you want to channelize.

You can select a single device or multiple devices (or line cards or members of VC or VCF for port channelization. Based on the devices selected, the ports for the devices are listed, along with the current port speed configured in the device. The ports are grouped by PIC/PORT.

 Port Conversion 1.png


  1. Modify the port speed (using the drop-down menu) at the device level or global level to channelize the port.

    If you select global level, the selection is applicable to all devices with the selected port and that support this speed. 

Port Conversion 2.png


  1. (Optional) Review the summary of the changes made in a single device or multiple devices by selecting the device or devices as shown below. All ports with the converted speeds are listed against the corresponding devices.

 Port Conversion 3.png

 4. Deploy the changes to the devices.

You can view the job details corresponding to these changes from “Manage Jobs” and audit  logs from “View Audit Logs.”



Network Director supports channelizing a single port or multiple ports of a device (or multiple devices) conjointly.