Sh CDP neighbors do not show me the switch ont heother side of LAN extensio

[CCDECCDE9]

Hi

I have 100Mbps fibre ETEHRNET lINK between two sites A and B.Site A has Cat4006 and Site B has Cat3750.This link is being provided by the service provider.When I run sh cdp neigbors I do not see 3750 from 4006 and vice versa.Any reason for this ?ALTHOUGH cdp IS ENABLED and I can see the switches that are local to the site.the Link is connected to Fast etehrnet port on 4006 and gig port on 3750.The routing is static and using SVI Ipa ddress for next hop

Thanks

Thanks in Advance

[paolo bevilacqua · Accepted solution]

The SP can have switches in between with CDP disabled. Remember, you're leasing a L2 circuit, not a fiber span or wavelength.