[c-nsp] question on s/rtbh 6500 with sup720-3cxl

Mark Tinka mark.tinka at seacom.mu
Mon Feb 9 01:09:02 EST 2015


On 9/Feb/15 07:51, Rod James Bio wrote:
> Hi,
>
> In case I fail to get the whole scenario. Why is a provider sending
> packets destined to 10/8 to you? Are you announcing that prefix? That
> should not happen.

This happens more often than you can imagine, from big-name transit
providers too.

We see it quite a bit on some of our sessions.
>
> Regarding your question. I think that the interface is still receiving
> those packets but are being drop before it exits your router.

We just have an ACL dropping RFC 1918.

Happens in hardware (as would Null0/discard).

Mark.


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