MLAG two tier design, lacp config for win 2013 servers

[HarrySo]

We are now testing following MLAG two Tier Design

2 BD8810 connected together with two 10Gbit LACP LAG

2 X670 connected to the BD's with 2x10Gb LACP LAG, each X670 is connected with one of Link to BD1 and the other to BD2

BD1 ---ISC-- BD2 --> VRRP Interface for Servers, Vlan is configured on the ISL Link.

670-1 ----ISC---670-2 --> Mlag for LACP Server Connection

On the X670 are the MLAG ports for the Servers configured.

We have configured on X440 as Server Dummy to check the functionality of MLAG. This works fine with no Interrupts.

Now we are testing the same constallation with MS 2012 R2 Servers, and we've got a lot of ICMP losses, the connection to the Server interrupts in the case e.g. opening a mstsc Session or just moving the mouse.

All LACP LAGs are configured L3_L4, the Aggregation to the Server comes up, MLAG Status is up, but as soon as traffic to the Server apears, the loose Connection to the Servers.

No Events in the Logs, MLAG or LACP is always fine

Any ideas?

[HarrySo]

Yes, on the two x670 Switches are the mlag formig Ports configured with LACP L3_L4

i will try lacp L3, hope it gets better

[_up__bb_]

You have enabled LACP on the port of the server on the x670

example

enable sharing 4 grouping 4 algorithm address-based L3 lacp

On MS try only L3 and not L3_L4 seems working well

[HarrySo]

Yes, on the Server was configured LACP

[_up__bb_]

on the server what kind of LAG have you configured ? LACP ?