Trunking between EXOS and S3

[michayos]

We recently deployed a stack of five 5420F series switches and configured a trunk back to our MDF which is an old Enterasys S3.  All VLANs over the trunk are tagged on both ends with no untagged traffic configured over the trunk.  The same VLANs are configured on both ends of the trunk so the allowed traffic matches up on both ends of the trunk.

For whatever reason, only traffic from the default VLAN 1 flows over the trunk.  Any traffic for any of the other VLAN's are failing.

I have trunks between some old "B5K" series Enterasys switches working with newer X450 series switches but only when one of the VLAN's are untagged.

Has anyone seen an issue with the older Enterasys switches requiring one VLAN to be untagged on trunks to newer EXOS based switches?  Does anyone know if this is required for trunks between the Enterasys S-series switches and EXOS based switches?

From a technical side, I have a LAG setup to manage the trunk on the S3 and sharing enabled to manage the trunk in EXOS on the 5420F stack.

Thanks  in advance for any help privided!

[michayos]

We are not using spanning tree

[michayos]

spanning tree is not in use

[Stefan_K_]

You have single port LAG disabled. Are both links (ge.2.10+12) up? If only one port is up, then the whole LAG will go down.

I would always enable single port lag on EOS.

LACP is enabled on 5420? Maybe "show lacp counters" (on 5420) might give some hints about whats going on. 

[michayos]

Sorry for the confusion, I only included commands specific to the lag & related ports.

"set lacp singleportlag enable" is in the config on the S3

sh sharing
Load Sharing Monitor
Config Current Agg Min Ld Share Ld Share Agg Link Link Up
Master Master Control Active Algorithm Flags Group Mbr State Transitions
================================================================================
1:50 LACP 1 L2 A 1:49 - R 0
L2 1:50 - R 0
L2 2:49 - R 0
L2 2:50 - R 0
L2 3:49 - R 0
L2 3:50 - R 0
L2 4:49 - R 0
L2 4:50 - R 0
L2 5:49 - R 0
L2 5:50 - R 0
================================================================================

show lacp counters
LACP PDUs dropped on non-LACP ports : 355735
LACP Bulk checkpointed msgs sent : 1
LACP Bulk checkpointed msgs recv : 0
LACP PDUs checkpointed sent : 355721
LACP PDUs checkpointed recv : 0

Lag Member Rx Rx Drop Rx Drop Rx Drop Tx Tx
Group Port Ok PDU Err Not Up Same MAC Sent Ok Xmit Err
--------------------------------------------------------------------------------
1:50 1:49 0 0 0 0 0 0
1:50 0 0 0 0 0 0
2:49 0 0 0 0 0 0
2:50 0 0 0 0 0 0
3:49 0 0 0 0 0 0
3:50 0 0 0 0 0 0
4:49 0 0 0 0 0 0
4:50 0 0 0 0 0 0
5:49 0 0 0 0 0 0
5:50 0 0 0 0 0 0

[Stefan_K_]

It display "Single Port LAGs: disabled", that's why I asked.

The Ports on 5420 are not even up - or is this just the current status? What also confuses me is that you receive LACP BPDUs on ports where not LACP is enabled. Are you sure everything is cabled correctly?

Besides that the LACP config looks good.