I have an S4810 (48 sfp+, 4 qsfp+) and an S2410 (24 cx4, 4 xfp). The S2410 is an existing switch and has run out of ports. I would like to add more equipment, and could do this by migrating all current equipment to the S4810 - but to change every server adapter from cx4 to sfp+ and purchase optics + schedule downtime for 24 servers seems unnecessary. To that effect I got the S4810 and would like to add it to the S2410 to form a single logical switch across the two (and move some high traffic servers onto the 40G ports).
I am not doing any complicated vlan stuff between the two, both are using default vlan (1) for all ports.
I have connected a single XFP port on the S2410 to a single SFP+ port on the S4810 with SR optics, and the link is showing as active on both sides.
I cannot, however, ping between hosts on both switches. Hosts on the same switch can ping each other without an issue, but between the switches they cannot ping.
On my gigE switches (powerconnect 2824 for example) I can simply plug a single cable between both switches and that effectively spans them. This doesn't seem to work for the S series switches and I am not sure why.
I have seen lots of reference to LAG w/LACP and am wondering if this is required to achieve what I want to do. I would also like to increase the bandwidth between the switches by using two 10G ports on each, so this looks to be the ideal solution, but I have never set this up on Dell/Force10 equipment. Any instruction on how to achieve this from both switches would be very appreciated, there are subtle differences in the FTOS commands between the two switches so any advice on how it can be achieved from both ends would really be great.
Any insight into why the two switches are not forwarding to each other at present would also be good to know, just for the sake of learning.
Thanks for reading.