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Are you using the correct SFP+ for 10G?
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I'm using GLC-SX-MMD= SFPs. &nbsp;I only need 1G interfaces.<br />
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I found this <a href="http://www.cisco.com/c/en/us/td/docs/interfaces_modules/transceiver_modules/compatibility/matrix/GE_Tx_Matrix.html#_Toc457217048" rel="ugc">http://www.cisco.com/c/en/us/td/docs/interfaces_modules/transceiver_modules/compatibility/matrix/GE_Tx_Matrix.html#_Toc457217048</a><br />
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I see my transceiver listed so it should work, but there's still the question why I don't see the Gigabit interface vs TenGig when I plug in the 1G SFPS.
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I'm using GLC-SX-MMD= SFPs.  I only need 1G interfaces.

I found this http://www.cisco.com/c/en/us/td/docs/interfaces_modules/transceiver_modules/compatibility/matrix/GE_Tx_Matrix.html#_Toc457217048 [http://www.cisco.com/c/en/us/td/docs/interfaces_modules/transceiver_modules/compatibility/matrix/GE_Tx_Matrix.html#_Toc457217048]

I see my transceiver listed so it should work, but there's still the question why I don't see the Gigabit interface vs TenGig when I plug in the 1G SFPS.

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Yes on the cli. Do you mean checking it by 'sh int status'?
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Yes on the cli. Do you mean checking it by 'sh int status'?

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<div class="content wysiwyg-content">
<a href="http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3850-series-switches/data_sheet_c78-720918.html" rel="ugc">3850 data sheet </a><br />
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Datasheet says it supports both 1/10, but when configuring it, the only interface shown is the TenGigabit. &nbsp;Is there anything that needs to be done to switch from 1 to 10, or is this automatically detected?
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3850 data sheet  (http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3850-series-switches/data_sheet_c78-720918.html)

Datasheet says it supports both 1/10, but when configuring it, the only interface shown is the TenGigabit.  Is there anything that needs to be done to switch from 1 to 10, or is this automatically detected?

3850XS-12 - 1/10 G ports

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Switches / Hubs

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).

Cisco

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.