> Source: [sk182825](https://support.checkpoint.com/results/sk/sk182825)

# sk182825 - The interface link state is down on Security Gateway in SecureXL User Mode (UPPAK) working with Jumbo Frames

| Property | Value |
|----------|-------|
| Solution ID | sk182825 |
| Date Created | 2024-11-12 |
| Last Modified | 2024-11-18 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R81.20 |
| OS | Gaia |
| Platform | 9000 |

## Symptoms

- * The interface link state is down on Quantum Force 9000 appliances in SecureXL User Mode (UPPAK) when working with Jumbo Frames.

* The */var/log/usim_x86.elg* file has many entries for:

  `
  [uspace];[tid_1];[UPPAK];cpfifo_port_allocate_mbufs: DPDK CPFIFO Out of mbuf
  `  
  `
  [uspace];[tid_1];[UPPAK];m_get: allocation failure`

* The command: `# ipsctl -a | egrep 'rte.*mbuf'`


  Returns a very low number of mbufs.

## Cause

When working with Jumbo Frames in SecureXL User Mode (UPPAK) on Quantum Force 9000 series appliances, incorrect memory allocation calculations may cause intermittent link failures.

## Solution

This problem was fixed. The fix is included in:

* [Check Point Quantum R82](https://support.checkpoint.com/results/sk/sk181127)
* [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 90

If you choose not to upgrade, Check Point can supply a **Hotfix**.
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).

---

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