ATT GigE issue on 11/19 in Kansas City

Wed Nov 30 15:51:00 UTC 2011

Stefan wrote the following on 11/30/2011 8:53 AM:
> On Wed, Nov 30, 2011 at 8:21 AM, Brad Fleming<bdflemin at gmail.com>  wrote:
>> On Nov 29, 2011, at 8:17 PM,<comptech at kc.rr.com>  wrote:
>>
>>> We lost several of our GigE links to AT&T for 6 hours on 11/19, anyone else see this and get a root cause from AT&T? All I can get is that they believe a change caused the issue.
>>>
>> We lost several (but not all) of our Optiman circuits on 11/19 at about 10:20am. We were told the root issue was that all VLANs in one of their switches had been accidentally deleted / removed. We were never able to get any additional detail (like "how") but services were restored about 16:45.
> +1 to the above - we received the following RFO, from the their NOC:
>
> "All impacted VLANS were rebuilt to restore service. It is believed
> there were some configuration changes that caused the VLAN troubles. A
> case has been opened with Cisco to further investigate the root
> cause."
>

Sounds like a VTP mishap.