AS4788 Telecom Malaysia major route leak?

joel jaeggli joelja at bogus.com
Sat Jun 13 18:07:18 UTC 2015


On 6/13/15 3:39 AM, Mark Tinka wrote:
> 
> 
> On 12/Jun/15 22:25, Jürgen Jaritsch wrote:
>> This is the official feedback:
>>
>>
>>
>> Level 3's network, alongside some other ISP's, experienced service disruptions affecting customers in Europe, Asia and multiple other markets. IP, Voice and Content Delivery Network (CDN) services were affected for Level 3. The root cause of the issue was isolated to a third party Internet Service Provider in Asia that leaked internet routes resulting in traffic being sent to a destination that could not route them, which affected IP, Voice and CDN services in multiple markets. The issue has been resolved, but the provider continues working to determine the specific root cause of the incident. At this time, customer services are restored with the exception of any that pose any possible risk to the Level 3 network. Maintaining a reliable, high-performing network for our customers is our top priority. Level 3 will continue to work with the provider to prevent a recurrence.
> 
> While I agree that TM needs to look into its operational procedures, I
> think Level(3) needs to shoulder more of the blame, and not simply pass
> the buck to TM.

if you localpref your customer up, you should probably not be willing to
accept the whole internet from them.

> TM has several more upstreams other than Level(3). Assuming their issue
> affected all their border routers, we did not see an issue via their
> other upstreams other than Level(3) - although this is conjecture on my
> part.

they also have ~ 180 ASNs in their downstream cone who presumably get a
full table have the export policy that did the business  in this case
applied all the time.

> Level(3) should have filtered at the time they were turning up TM.
> Simple as that.
> 
> We all know we should never trust customers. So...
> 
> Mark.
> 


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