Dell Technologies Networking OS10: OOB Management is Unreachable Using Default VRF
Summary: Out of Band (OOB) management is unreachable using default Virtual Routing and Forwarding (VRF), Virtual Link Trunking (VLT)
Symptoms
Using the 10.4.0.x switch management interface IP is not reachable using default VRF.
Cause
Resolution
Table of Contents
Summary
User may face network reachability issue if OOB Management is not specified in separate VRF when connected on the same infra as production VLANs. For instance, if OOB is used as VLT Backup link and connected to a dedicated VLAN, it may show as status "down."
Products Affected
This is not a hardware platforms-specific issue.
OS: 10.4.0.x
Root Cause Analysis
Management interface must be set in a dedicated management VRF.
Example of Non-working configuration:
| Interface mgmt1/1/1 | Configuring Out of Band Interface |
|---|---|
| No shutdown | Enabling interface |
| IP address 10.1.1.1/27 | Setting IPv4 address |
| IPv6 address autoconfig | Enabling IPv6 automatic addressing |
| VLT-domain 43 | Creating a VLT domain |
| Backup destination 10.1.1.2 | Setting VLT backup heartbeat to remote OOB IP |
| Discovery-interface ethernet1/1/25-1/1/26 | Set VLTi link |
Software Fix
None: Working as designed
Workaround Solution
There is a documented configuration procedure in the Release Notes - Section Management VRF.
| IP VRF Management |
Enter in Management VRF Configuration Mode |
|---|---|
| Interface management |
Add OOB interface to Management VRF |
| Interface mgmt1/1/1 |
Configuring out of band interface |
| No shutdown |
Enabling interface |
| IP address 10.1.1.1/27 |
Setting IPv4 address |
| IPv6 address autoconfig |
Enabling IPv6 automatic addressing |
| VLT-domain 43 |
Creating a VLT domain |
| Backup destination 10.1.1.2 vrf management |
Setting VLT backup heartbeat destination to remote OOB IP using Management VRF |
| Discovery-interface ethernet1/1/25-1/1/26 |
Set VLTi link |