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The 3845 comes with 2 integrated GE. If you look at the back of the router you will see top left the two GigabitEthernet Ports. These are the 2GE. Right next to those is a small slot for the SFP. But no module will be in it, nor will it come with any...
At a high level here is an explanation.SFP = small form-factor pluggable It is a module that you can plug into the router for connectivity to another device. Modules include fiber multimode and singlemode.NME = Network Module Enhanced This is a modul...
Have you tried this?access-list acl-outside permit udp {network outside, can be specific to DHCP server} {network inside} eq 67access-list acl-inside permit udp {network inside} {network outside, can be specific to DHCP server} eq 68Sorry, sent same ...