I have a few switches which when I run the show arp command I just see a few entries but other switches I see all the ports. Is there something I need to configure to get this to work? They are 4506 switches running cat 4000-i9s-mz.122-25.EWA4
I have attached the configs for the two switches and their show arp outputs.
Sure, search cisco.com. Here are some good links that should help.
Here's a book on Catalyst switching that is excellent.
Nope, but you could create an SVI on the switch and use HSRP or GLBP to peer with the other switch providing the default gateway. That will not only populate your arp table it will provide gateway redundancy!