Tony

Tony

47p

73 comments posted · 0 followers · following 1

10 years ago @ RouterJockey - Using Discontiguous Wi... · 0 replies · +1 points

Thank you for that. This stuff is far easier when you're working on paper vs trying to do it in a text editor + html formatting :)

I've updated the post to fix my XOR / AND maths.

12 years ago @ RouterJockey - MDS Fibre Channel Swit... · 0 replies · +1 points

Looks like around June of 2009... http://www.cisco.com/en/US/products/ps5989/prod_r...

12 years ago @ RouterJockey - Using Discontiguous Wi... · 1 reply · +1 points

Not sure what I was thinking when I said 1 xor 0 = 1 xor 1 = 1... but that is not correct. Just proves that we're all human, right?

BUT, when you're setting up a discontiguous mask for 3 or more IP addresses, you need to forget XOR, and simply use your own logic. Is the bit significant or not... in the case of comparing 1, 0, 1.. the bit is NOT significant, thus it will be set to 1...

Maybe it would be best if I rewrote this article to better explain the logic.

12 years ago @ RouterJockey - SNMP can save your life · 0 replies · +1 points

No problem Keith, this was from a Linux server, but it could've just as easily been from a Mac, or a Windows desktop running Cygwin.

12 years ago @ RouterJockey - NEC and ProgrammableFl... · 0 replies · +3 points

My apologies, meeting so many great people that week has led to a bit of name jumble... Thank you so much for having us out, we certainly enjoyed learning more from everyone at NFD2.

12 years ago @ RouterJockey - SNMP can save your life · 0 replies · +1 points

Unfortunately I wasn't able to find a way to do that... I ended up having to add some static routes in my network to get to the P2P address on the device I was attempting to fix.

12 years ago @ RouterJockey - Using Discontiguous Wi... · 3 replies · +1 points

The problem is that when you're dealing with multiple values, you can't treat it as a true XOR.. as a true XOR is between 2 values and the order of operations would affect the output. (101=1 110=0, if that makes sense)

In this case, you're looking at a significant, or don't care bit. Thus, if you have 101, your bit has to bet set to 1, because you don't care about this value. It changes between the 3 IPs you're checking against.

Does that make sense?

12 years ago @ RouterJockey - Nexus 7000 vPC Features · 1 reply · +1 points

Not that I noticed...

12 years ago @ RouterJockey - Best Practices and Sec... · 1 reply · +1 points

You're absolutely correct, not sure how that made it in there, but I've updated the post now.

12 years ago @ RouterJockey - Nexus 7000 vPC Features · 0 replies · +1 points

Exactly why I posted this article.... :)