topic Re: Trunk connection between VSP7400 (v.8.2.0.0) and ERS 4926 (v.7.8.1.0.5 in ExtremeSwitching (VSP/Fabric Engine)

Trunk connection between VSP7400 (v.8.2.0.0) and ERS 4926 (v.7.8.1.0.5

kevin_phi — Mon, 23 Nov 2020 19:27:54 GMT

Dear all,

I have an issue regarding a trunk link between a VSP 7400 and ERS 4926.

Ping doesn’t work..

vlan config on VSP
--------------------
vlan members remove 1 1/1-1/48
vlan create 201 name "VLAN_Gare" type port-mstprstp 0
vlan members 201 1/48 portmember
interface vlan 201
ip address 192.168.201.1 255.255.255.0

port trunk config on VSP
------------------------
interface gig 1/48
default-vlan-id 201
no shut

ip config on ERS
-----------------
ip default-gateway 192.168.201.1
ip address switch 192.168.201.4

vlan config on ERS
------------------------
vlan create 201 type port cist
vlan members 1 NONE
vlan members 201 25-26
vlan mgmt 201
vlan ports 25-26 tagging tagall

Does I forgot something in the config ?
The ERS appears in the ip lldp neighbors but not in the ip arp table.
I have another ERS connected to the ERS and ping/communication works properly.

Re: Trunk connection between VSP7400 (v.8.2.0.0) and ERS 4926 (v.7.8.1.0.5

SamPirok — Tue, 24 Nov 2020 01:28:43 GMT

Hi Kevin, is the port on the VSP towards the ERS configured to tag frames (‘encapsulation dot1q’)? The ERS will likely drop untagged frames, which could be causing your issue here.

Re: Trunk connection between VSP7400 (v.8.2.0.0) and ERS 4926 (v.7.8.1.0.5

kevin_phi — Tue, 24 Nov 2020 17:28:02 GMT

Hi Sam,

It exactly this, I changed it and working fine now.

I forgot to activate the encapsulation dot1q on the VSP trunk port

Thx for your feeeback.

Kevin