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max-queues

Syntax

max-queues queues-per-line-card;

Hierarchy Level

[edit chassis fpc slot-number]

Release Information

Statement introduced in Junos OS Release 13.2.

Description

Configure the maximum number of queues allowed per MPC1 Q, MPC2 Q, and MPC2 EQ line card in an MX240, MX480, MX960, MX2010, or MX2020 router or per 2-port or 4-port 10-Gigabit Ethernet fixed MIC with XFP in an MX5, MX10, MX40, or MX80 modular chassis router.

Reducing the number of queues allowed in a hierarchical scheduling environment in turn reduces the degree of jitter in the queues.

Options

queues-per-line-card

Maximum number of queues allowed for the line card. Only the following keywords are valid: 8k, 16k, 32k, 64k, 128k, or 256k.

  • Built-in 10-Gigabit Ethernet MICs and MPC1 Q line cards support up to 128 K queues. You can use this statement to configure the single Packet Forwarding Engine to support a lower maximum number of queues.
  • MPC2 Q and MPC2 EQ line cards support up to 256 K queues. You can use this statement to configure the two Packet Forwarding Engines to support a lower maximum number of queues.

If you configure a keyword for a value that exceeds the number of queues supported by the line card hardware, the system uses the maximum number of queues supported by the line card.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.

Published: 2013-07-31