> Source: [sk170995](https://support.checkpoint.com/results/sk/sk170995)

# sk170995 - Cannot set bridge member interface rx-ring buffer size via clish on VSX Gateway

| Property | Value |
|----------|-------|
| Solution ID | sk170995 |
| Date Created | 2020-12-20 |
| Last Modified | 2021-11-30 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * Changing physical interface ringsize on a Virtual Switch or Virtual System in bridge mode does not take affect

  `
  > set interface eth1-01 rx-ringsize `**2048**   
  `
  > show interface eth1-01 rx-ringsize`  

  `
  Receive buffer ring size:`**256**   
  `
  Maximum receive buffer ring size:4096`  
  `
  `  
  `
  # ethtool -g eth2-08`  
  `
  Ring parameters for eth2-08:`  
  `
  Pre-set maximums:`  
  `
  RX: 4096`  
  `
  RX Mini: 0`  
  `
  RX Jumbo: 0`  
  `
  TX: 4096`  
  `
  Current hardware settings:`  
  `
  RX: `**256**   
  `
  RX Mini: 0`  
  `
  RX Jumbo: 0`  
  `
  TX: 1024
  `
* Interface ringsize on a Virtual Switch or Virtual System in bridge mode does not take affect after reboot or upgrading to R80.40

  `
  # clish -c "show configuration" | grep eth1-01`  
  `
  set interface eth1-01 rx-ringsize `**512**   
  `
  `  
  `
  # ethtool -g eth1-011`  
  `
  Ring parameters for eth1-01:`  
  `
  Pre-set maximums:`  
  `
  RX: 4096`  
  `
  RX Mini: 0`  
  `
  RX Jumbo: 0`  
  `
  TX: 4096`  
  `
  Current hardware settings:`  
  `
  RX: `**256**   
  `
  RX Mini: 0`  
  `
  RX Jumbo: 0`  
  `
  TX: 1024`  
  `
  `  
  `
  > show interface eth1-01 rx-ringsize`  

  `
  Receive buffer ring size:`**256**   
  `
  Maximum receive buffer ring size:4096`  
  `
  `

## Solution

[Contact Check Point Support](https://www.checkpoint.com/support-services/contact-support/) to get a Hotfix for this issue.   
A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.   
For faster resolution and verification please collect [CPinfo](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk92739) files from the Security Management and Security Gateways involved in the case.

**Hotfix installation instructions:**   
Refer to [sk168597 - How to install a Hotfix](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk168597).  

After the hotfix is installed and a reboot occurs the interfaces will have there ringsize set based on the configuration. If you are not sure what the value is currently configured run `clish -c "show configuration" | grep "rx-ringsize"` in expert mode. No output means the value is at its default 256.

As a workaround: To set the interface ringsize prior to installing the fix the following command can be ran. This change will not survive reboot.  
`vsenv <VS that has interface>`  
`ethtool -G <interface> rx <ringsize>`  

Example:  
vsenv 1  
ethtool -G eth1-01 rx 2048

---

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