What is Tx and Rx port?
TX and RX are abbreviations for Transmit and Receive, respectively. Note that these metrics are referenced to the server being monitored; Transmit FROM this server, and Receive TO this server. Units are in Bytes (not bits)
Why would you mirror a port?
Port mirroring is used on a network switch to send a copy of network packets seen on one switch port (or an entire VLAN) to a network monitoring connection on another switch port. It helps administrators keep a close eye on network performance and alerts them when problems occur.
How many source ports can traffic mirroring support?
In a single local or remote traffic mirroring session, you can monitor source port traffic, such as received (Rx) for ingress traffic, transmitted (Tx) for egress traffic, or bidirectional (for both ingress and egress traffic). Your router can support any number of source ports (up to a maximum number of 800).
Is there a restricted form of traffic mirroring?
A restricted form of remote traffic mirroring can be implemented by sending traffic to a single destination port that pushes a VLAN tag, instead of switching through a bridge domain. Remote traffic mirroring:
How does port mirroring work in a hub?
It then creates an exact copy of that data and applies it to the destination port. In the case of hubs, this action creates duplication. For example, if a hub receives a packet on one of its ten ports, it will send that same packet out on all of its other nine ports. So, one packet becomes nine copies.
Is it port mirroring or promiscuous mode?
Purists will argue that putting your network card in promiscuous mode is not “port mirroring,” because your network card is not duplicating packets. They say the card is just dropping the requirement for its MAC address in order to recognize arriving packets and forward them to applications on your computer.