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]

Hi Bill and Prashant!

here the Driver Dates from the Server NIC



Name : NIC1

InterfaceDescription : Broadcom BCM57800 NetXtreme II 10 GigE (NDIS VBD

Client) #46

InterfaceIndex : 13

MacAddress : B0-83-FE-E5-D6-23

MediaType : 802.3

PhysicalMediaType : 802.3

InterfaceOperationalStatus : Up

AdminStatus : Up

LinkSpeed(Gbps) : 10

MediaConnectionState : Connected

ConnectorPresent : True

VlanID : 0



DriverInformation : Driver Date 2013-06-11 Version 7.4.23.2 NDIS 6.30

[Prashanth_KG]

Hi Harry,

As a part of the troubleshooting, please try to disable one of the NIC on the server and then check if the issue still persist. If the issue is gone, please re-enable the NIC and then configure mac-tracking on the Extreme switches to observe any MAC movement.

Please refer the article below for the steps to configure mac-tracking.

https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-configure-MAC-tracking-in-EXOS/?q=m...

After configuring the mac-tracking, check the logs and look for any mac-movement.
As Bill pointed out, the switch configuration looks fine and if you use an X440, the traffic flow is good.

[HarrySo]

Hi Bill

Now the Switches are running the recommended FW 15.6.3.1, i've tested it also with 15.7.1.4 patch 1-1.

With 16.1.1. i wasn't satisfied, cause we couldnt authorize with our radius Login, but this is another Special Problem....

Switch primary Fri Jul 3 12:54:38 Unknown 2015 15.6.3.1 summitX-15.6.3.1.xos v1563b1
Switch primary Fri Jul 3 12:55:54 Unknown 2015 15.6.3.1 summitX-15.6.3.1-ssh.xmod v1563b1
Switch secondary Mon May 4 10:08:40 UTC 2015 15.7.1.4 summitX-15.7.1.4-patch1-1.xos v1571b4-patch1-1
Switch secondary Mon May 4 10:09:17 UTC 2015 15.7.1.4 summitX-15.7.1.4-ssh.xmod v1571b4

The Server guys told me, that they are already using the latest Drivers for their brocade NICs

[Al-Najjar__Khal]

Hi Try to use the two x670s as stacking over 10G then this stack system to Mlag to BDs So nod Tier Mlag config

[_up__bb_]

Please share your config on both x670 and MS windows.