> Source: [sk114625](https://support.checkpoint.com/results/sk/sk114625)

# sk114625 - Multi-Queue does not work on 3200 / 5000 / 6000 / 15000 / 23000 appliances when it is enabled for on-board interfaces

| Property | Value |
|----------|-------|
| Solution ID | sk114625 |
| Date Created | 2016-11-21 |
| Last Modified | 2020-06-28 |
| Technical Level | Advanced |
| Products | Security Gateway, Spark Firewall (Locally Managed), Hardware |
| Versions | R82.10, R82, R81.20, R82.00.X, R81.10.X, Not Version-Specific |
| OS | Gaia |
| Platform | 15000, 3000, 5000 |

## Symptoms

- * Multi-Queue does not work on 3200 / 5000 / 15000 / 23000 appliances in the following scenario:

  1. MQ is enabled for on-board interfaces (e.g., `Mgmt`, `Sync`)
  2. the number of active RX queues was set to either 3 or 4 (with `cpmq set rx_num igb <number>` command)
  3. appliance was rebooted
* Output of "`cpmq get -a`" command shows that the on-board interfaces, on which the Multi-Queue was enabled, stay with status "`Pending on`".

* Output of "`dmesg`" command shows:  

  `igb: 0000:0b:00.0: igb_validate_option: Invalid RSS - RSS multiqueue receive count value specified (4) using default of 1`

* On-board interfaces remain with 2 queues although configured with 4.

## Cause

The number of traffic queues is limited by the number of CPU cores and the type of network interface card driver.  
The on-board interfaces on these appliances use the **igb** driver, which supports up to 4 RX queues.  
However, the I211 controller on these on-board interfaces supports only up to 2 RX queues.  

The number of enabled queues will be the the higher supported by **both** elements, hardware and driver.  

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## Solution

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