> Source: [sk182105](https://support.checkpoint.com/results/sk/sk182105)

# sk182105 - MTU verification warning during upgrade

| Property | Value |
|----------|-------|
| Solution ID | sk182105 |
| Date Created | 2024-03-18 |
| Last Modified | 2024-04-01 |
| Technical Level | Advanced |
| Products | Scalable Platforms |
| Versions | R81.20, R81.10 (EOS), R81 (EOS) |
| OS | Gaia |

## Symptoms

- * Warning when running the upgrade verifier script:  

  `[Expert@Hostname]# ./pre_upgrade_verifier.sh`  
  `Starting the Pre-Upgrade Verifier on the Security Group.`  
  `Enter the IP address of the Management Server that manages this Security Group:x.x.x.x`  
  `Cluster State: Passed`  
  `Connectivity to the Management Server: Passed`  
  `LACP: Passed`  
  `Disk Space: Passed`  
  `MTU: Failed`  
  `ixgbe was detected, MTU is higher then 9710 for the following interfaces:`  
  ` BPEth0, MTU: 9710`  
  ` BPEth1, MTU: 9710`  
  `Please refer to sk179686`  
  `The Security Group failed the Pre-Upgrade Verifier tests.`  
  `Do NOT continue with the upgrade until you fix all the detected issues.`  

* MTU is already set to 9710:  

  `[Expert@Hostname]# ifconfig`  
  `BPEth0 Link encap:Ethernet HWaddr 00:1C:7F:x:x:x`  
  ` UP BROADCAST RUNNING MASTER MULTICAST MTU:9710 Metric:1`  
  ` RX packets:3475142887346 errors:0 dropped:0 overruns:0 frame:0`  
  ` TX packets:3726049860469 errors:0 dropped:0 overruns:0 carrier:0`  
  ` collisions:0 txqueuelen:1000`  
  ` RX bytes:2106372245556094 (1.8 PiB) TX bytes:1257136497673607 (1.1 PiB)`  

  `BPEth1 Link encap:Ethernet HWaddr 00:1C:7F:x:x:x`  
  ` UP BROADCAST RUNNING MASTER MULTICAST MTU:9710 Metric:1`  
  ` RX packets:4018466382096 errors:0 dropped:0 overruns:0 frame:0`  
  ` TX packets:3760306327882 errors:0 dropped:0 overruns:0 carrier:0`  
  ` collisions:0 txqueuelen:1000`  
  ` RX bytes:2522054422684907 (2.2 PiB) TX bytes:3371428050556586 (2.9 PiB)`  

  <br />

  `config/active file:`  
  `interface:BPEth0 t`  
  `interface:BPEth0:mtu 9710`  
  `interface:BPEth0:state on`  

  `interface:BPEth1 t`  
  `interface:BPEth1:mtu 9710`  
  `interface:BPEth1:state on`

## Cause

This is a false positive in the pre_upgrade verifier script.

## Solution

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