Defining Virtual Channel Groups

Note: SRX3400, SRX3600, SRX5600, and SRX5800 devices do not support virtual channels.

Use virtual channels to avoid oversubscription of links by limiting traffic from a higher aggregated bandwidth to a lower one—for example, to limit traffic from a main office to branch offices. You channelize this traffic by applying queuing, packet scheduling, and accounting rules to logical interfaces.

To configure virtual channel groups using the J-Web configuration editor:

  1. Select Configure>Class of Service>Virtual Channel Groups.

    The configure class of service page appears.

  2. Fill in the options as shown in Table 100.
  3. Click one of the following buttons:
    • Click OK to check your configuration, save it as a candidate configuration, and return to the main configuration page, then click Commit Options>Commit.
    • Click Cancel to cancel your entries and return to the main page.

Table 101: Virtual Channel Group Quick Configuration Page Summary

Field

Function

Your Action

Virtual Channel Groups Summary

Virtual Channel Group Name

Displays names of defined virtual channel groups.

Allows you to edit a virtual channel group.

None

Virtual Channel Name

Displays names of defined virtual channels.

Allows you to edit a virtual channel.

None

Default

Marks the default virtual channel of a group.

One of the virtual channels in a group must be configured as the default channel. Any traffic not explicitly directed to a particular channel is transmitted by this channel.

None

Scheduler Map

Displays the scheduler map assigned to a particular virtual channel.

None

Shaping Rate

Displays the shaping rate configured for a virtual channel.

None

Add

Opens a page that allows you to add a virtual channel group.

To add a virtual channel group, click Add.

Delete

Removes a specific virtual channel group.

To remove a specific virtual channel group, select it from the summary page, and click Delete.

Add a Virtual Channel Group/Edit a Virtual Channel Group

Virtual Channel Group Name

Specifies a name for a virtual channel group.

To name a group, type the name—for example, wan-vc-group.

Add

Creates a virtual channel group.

Opens a page that allows you to add a virtual channel to the specified group.

To create a virtual channel group, click Add.

Add a Virtual Channel/Edit Virtual Channel

Virtual Channel Name

Specifies the name of a virtual channel to be assigned to a virtual channel group.

To name a virtual channel, either select a predefined name from the list or type a new name—for example, branch1–vc.

Scheduler Map

Specifies a predefined scheduler map to assign to a virtual channel.

Scheduler maps associate schedulers with forwarding classes. For information about how to define scheduler maps, see Table 99.

To specify a scheduler map, select it from the Scheduler Map list.

Shaping Rate

Specifies the shaping rate for a virtual channel.

The shaper limits the maximum bandwidth transmitted by a virtual channel.

Configuring a shaping rate is optional. If no shaping rate is configured, a virtual channel without a shaper can use the full logical interface bandwidth.

To specify a shaping rate, select one of the following options:

  • To specify no shaping rate, select Unconfigured.
  • To configure a shaping rate as an absolute number of bits per second, select Absolute Rate and type a value between 3200 and 32,000,000,000.
  • To configure a shaping rate as a percentage, select Percent and type a value between 0 and 100.