Currently have two 6513's with two supervisor engines each(720's). Trying to create redundancy between the two. Have ios on core2 and catos on core 1, mods in 7 and 8 on each core switch.
Would like to create etherchannel between the two using the fiber port 1 and ethernet port 2's. Running cable to each engine on alternate switch. Anyone ever do this or know good way to acheive this?