Cisco uRPF failures

Brandon Ewing nicotine at
Sat Sep 13 13:26:18 CDT 2008

On Thu, Sep 11, 2008 at 08:11:28PM +0300, Saku Ytti wrote:
> Sound like these shops are using 3550 as router, which is common for
> smaller shops, especially in EU. And indeed, 3550 would not do uRPF. 
> (3560E does).

Are you sure?  According to the IOS guide for 3560E/3750E, "ip verify" is
still an unsupported interface command.  I don't have a 3560E handy to test
on, but I know that a non-E 3560 refuses it with a notice regarding how
verification is not supported by hardware.


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