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.
For questions about PPPoE (Point-to-Point Protocol over Ethernet), which provides a method to connect two PPP nodes by encapsulating PPP frames inside Ethernet frames.
primarily about words / abbreviations specific to networking or network engineering. Do not use this tag as a catch-all for other questions.
For questions about traffic dumps from the packet analyzer tcpdump. This tag should only be used in relation to troubleshooting an issue with a network device. If the host that runs tcpdump has been c…
For questions about stacking of network devices. For instance, you are stacking a new set of switches or firewalls, where you need help with configurations or are troubleshooting a problem.
A tag for questions involving Brocade Communications Systems hardware or software.
a tunnelling protocol, used to carry network layer protocols through encapsulation inside others.
For questions involving the command line interface (CLI) on network devices. For instance, you need help with commands on a switch or having trouble finding the right command for your configuration.
For questions about load balancing network devices. For instance, you are setting up a port-channel with load-balancing or you want to load balance between two firewalls.
Cisco's proprietary layer 2 link aggregation (LAG). It is mostly compatible with the open IEEE 802.3ad/802.1AX standard (LACP).
a technique for securing switchports by restricting inrgess traffic by limiting the MAC addresses that are allowed to send traffic into the port.
For questions about network hardware. For instance, switches, routers, firewalls, bridges, IP phones, Wireless lan controllers, Access points etc.
For questions about or involving the Juniper MX series routers. For instance, the Juniper MX10, MX80, MX204 etc.
For questions about the Asymmetric Digital Subscriber Line (ADSL) connection type. You should only use this tag in a professional enterprise purpose involving an ADSL connection.
For questions about the 802.1X protocol for port-based network access control.
For questions about network congestion, where a network node or link is carrying more data than it can handle. For instance, you are troubleshooting or trying to find a bottleneck in your network topo…
For questions about network topology, where a network topology is the arrangement of a network, including its nodes and connecting lines.
For questions about switchports on network devices. For instance, you want to configure a trunk on a router interface or you are wondering how you setup an interface on a switch for a server.
a worldwide provider of network security appliances and a market leader in Network Security (FW/NGFW/UTM).
Questions relating to the usage of Virtual Routing and Forwarding and VPN Routing and Forwarding.
For questions about telephony in relation to networking. For instance, you are setting up, designing or is having trouble with your IP telephony solution. Physical network installations in regards to …
For questions about network Authentication, Authorization, and Accounting. These are methods which comprise a security framework for access control on the network, services, and/or devices.
For questions about port mirroring on a network device, where a network switch sends a copy of network packets seen on one switch port (or an entire VLAN) to a network monitoring connection on another…
For questions regarding industry methods or techniques that have shown superior results and are accepted as a de facto standard, or have been formally established.
For questions about IGMP (Internet Group Management Protocol), a protocol used for communications between IPv4 hosts and multicast routers to establish and maintain host multicast group membership.
A protocol for communication between controllers and network elements in a software-defined network.
For questions about the Cisco developed Virtual Port Channel (vPC) technology. For instance, you want to stack two Nexus 7000 switches or you are troubleshooting a problem with a Nexus 2000 fabric ext…
For questions about network performance, where factors like Bandwidth, Throughput, Latency, Jitter and Error rate are all often considered important.
For questions about access control lists (ACLs). For instance, you want to limit network traffic to increase network performance or provide traffic flow control on your network device. ACLs also provi…
For questions about Wireless LAN Controllers (WLCs), whatever the manufacturer.
For questions about Virtual Router Redundancy Protocol (VRRP), a standards based First Hop Redundancy Protocol (FHRP) defined in RFC 2338.
For all questions involving testing of network devices or in relation to testing in computer networks.