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Traffic Forwarding in Global Router instead of VRF on initial boot

Traffic Forwarding in Global Router instead of VRF on initial boot

ryan260
New Contributor

Last night I upgraded 17 x VSP-7254 switches to 8.10.5 and 3 x Universal 5520 Fabric Engine switches to 9.0.4.0.

I noticed some odd behavior within my Firewall logs. The 3 x Fabric Engine switches begin routing VLANs that are tied to VRFs (L3VSNs) using the Global Router on initial boot. Then a few minutes later, after the VRF process initializes they use their respective VRF routing table. Is this expected behavior or a bug? It's almost as if the switch boots up, all VLAN interfaces (SVIs) are placed in the GlobalRouter until the VRF process starts and then they are moved but forwarding begins somewhere in between those 2 events. Here are some logs that made me thing this is what happening, can anyone confirm?

(UTC Time initially before NTP Syncs)
1 2025-01-10T00:18:16.467Z 5520-24X-FabricEngine CP1 - 0x00034594 - 00000000 GlobalRouter SW INFO System boot
1 2025-01-10T00:18:16.467Z 5520-24X-FabricEngine CP1 - 0x00034595 - 00000000 GlobalRouter SW INFO 5520-24X-FabricEngine Extreme Networks Fabric Engine Release 9.0.4.0
1 2025-01-10T00:18:16.483Z 5520-24X-FabricEngine CP1 - 0x00010774 - 00000000 GlobalRouter HW INFO Detected 5520-24X-FabricEngine chassis
1 2025-01-10T00:18:16.498Z 5520-24X-FabricEngine CP1 - 0x00010830 - 00000000 GlobalRouter HW INFO Detected 5520-24X-FabricEngine module (Serial#: XXXXXXXXXXXXXXXXX) in slot 1
1 2025-01-10T00:18:17.838Z 5520-24X-FabricEngine CP1 - 0x0019c58e - 007b0001 DYNAMIC CLEAR GlobalRouter VRF INFO VRF is up
1 2025-01-10T00:18:17.841Z 5520-24X-FabricEngine CP1 - 0x0019c58e - 007b0001 DYNAMIC CLEAR MgmtRouter VRF INFO VRF is up

Then other VRFs come up afterward and plenty of other stuff in between
1 2025-01-09T19:18:32.654-05:00 PS008-VOSS5520 CP1 - 0x0019c58e - 007b0001 DYNAMIC CLEAR vrf-001 VRF INFO VRF is up
1 2025-01-09T19:18:32.659-05:00 PS008-VOSS5520 CP1 - 0x0019c58e - 007b0001 DYNAMIC CLEAR vrf-002 VRF INFO VRF is up
1 2025-01-09T19:18:32.664-05:00 PS008-VOSS5520 CP1 - 0x0019c58e - 007b0001 DYNAMIC CLEAR vrf-003 VRF INFO VRF is up
1 2025-01-09T19:18:32.669-05:00 PS008-VOSS5520 CP1 - 0x0019c58e - 007b0001 DYNAMIC CLEAR vrf-004 VRF INFO VRF is up
1 2025-01-09T19:18:32.675-05:00 PS008-VOSS5520 CP1 - 0x0019c58e - 007b0001 DYNAMIC CLEAR vrf-005 VRF INFO VRF is up
1 2025-01-09T19:18:32.680-05:00 PS008-VOSS5520 CP1 - 0x0019c58e - 007b0001 DYNAMIC CLEAR vrf-006 VRF INFO VRF is up

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