A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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a major provider of networking equipment. Cisco devices often run IOS or NX-OS. This is a generic tag to be used when no more specific tags are available. See the partial list of tags in the…
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A tag for questions about network switches, the term commonly refers to a multi-port network bridge that processes and routes data at the data link layer (layer 2) of the OSI model.
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For questions about wireless networking, including any licensed or unlicensed RF medium used to provide point-to-point or point-to-multipoint network links.
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A tag for questions pertaining to network routers, devices that forward data packets between computer networks, commonly at the network layer (layer 3) of the OSI model.
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A tag for discussion of "routing", the process of selecting which network path to send traffic to.
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A tag for questions related to Cisco's Catalyst line of switches.
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For questions relating to Ethernet networking, as defined by the IEEE 802.3 standards.
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used to logically divide a single physical switch into multiple broadcast domains.
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the predominant OSI layer 3 protocol on the current Internet.
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Cisco's Adaptive Security Appliance (ASA) which combines functionality from the PIX, VPN 3000 series and Intrusion Prevention Systems (IPS) product lines
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Border Gateway Protocol, used on the internet both inside of and in between networks.
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A general purpose tag to mark discussions of general security topics including firewalls, ACLs, AAA and numerous others related to keeping the network safe from unauthorized access.
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A virtual private network (VPN) extends a private network across a public network.
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Quality Of Service, all aspects of providing differential service to packets based on TOS, DSCP, or other information
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a link-state routing protocol for Internet Protocol (IP) networks.
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the operating system employed by most Cisco devices. It is also used to refer to the command line shell that is used to configure Cisco devices.
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A tag for questions involving Juniper Networks hardware or software.
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for all aspects of IPv6, basic concepts, migration strategies, translation mechanisms, etc.
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For questions about wireless networking, specifically networks covered under the IEEE 802.11 standards. Also commonly referred to as WLANs.
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Dynamic Host Control Protocol - automatic assignment of addresses to network devices. Questions about configuring it, blocking rogue DHCP servers, etc.
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Major release 12 of Cisco's IOS software
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Major release 15 of Cisco's IOS software
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Simple Network Management Protocol (SNMP) is used for managing devices on IP networks. It is most often used to query statistics for network equipment.
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a transport protocol used to encapsulate data across a network for reliable communication.
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for questions about Multi Protocol Label Switching (MPLS), the layer 2.5 protocol used as a transport layer for Traffic Engineering, some Layer 2 & 3 VPN's, and VPLS
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a protocol that prevents layer 2 loops by shutting down redundant links. It builds a tree from a central switch, called the "root switch". This can be done for the networ…
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Fiber optic data transmission, cabling, connectors, interfaces. Questions should have this tag if they directly involve fiber optic transmission of data, fiber optic cabling and/or connectors, or inte…
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