[AusNOG] Fwd: Mikrotik > Telstra DA MRV Issue

[Eliezer Croitoru]

Did you managed to resolve the issue?

I can try to help you with the MikroTik Device.

 

Eliezer

 

----

 <http://ngtech.co.il/lmgtfy/> Eliezer Croitoru
Linux System Administrator
Mobile: +972-5-28704261
Email: eliezer at ngtech.co.il



 

From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Cameron Murray
Sent: Thursday, August 10, 2017 02:21
To: ausnog at lists.ausnog.net
Subject: [AusNOG] Fwd: Mikrotik > Telstra DA MRV Issue

 

Guys,

 

Been fighting a weird issue for the past week with a AAPT resold Telstra Wholesale DA service.

 

The service was completed last week and successfully tests by both carriers however with the customers Mikrotik device the service does not function correctly with only RX data within a tagged vlan 1024 (This is an untagged service and the AGG vlan is not 1024).

 

When we perform a data capture from within the Mikrotik we can see ARP and ECHO responses being performed from the CPE to the AGG Router that are being sent out untagged.

 

The show stopper here is if we plug a laptop directly into the MRV the service works correctly.

 

We have changed Mikrotik Routers and also tried different series devices, interface speeds and different MAC address ranges. We've provisioned hundreds of these and this is the first that I'm stumped on.

 

This is a difficult issue to explain and even harder when both AAPT and Telstra saying no fault found.

 

Reference Images:

 

https://www.dropbox.com/s/nzwi7kad24cpims/ARP%20Request%20CPE-VLAN1024.PNG?dl=0

 

https://www.dropbox.com/s/kv1xs1ykh11iym8/Packet%20Capture%20Wan%20Int.PNG?dl=0

 

https://www.dropbox.com/s/3cri7r5jdkh94qf/wireshark-vlan-1024.PNG?dl=0

 

 

My Hope is someone here has seen this issue before and give me a sanity check

 

TIA

 

Cameron

 

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