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Topic: Port mirroring

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	Configure:Port Mirroring
		Mirror inbound and outbound traffic on a single interface, typically used to monitor uplink traffic from a workgroup switch.
		The following commands configure port mirroring on a departmental switch where the probe is connected to port 4/1 and that the uplink is on port 4/2.
		The following commands configure port mirroring for a backbone switch where the probe is connected to port 1/1 and where ports 1/2, 2/1 and 2/2 are to be monitored.
	www.inmon.com /help/sp/5.0/configure/portmirroring.htm (280 words)

	NationMaster - Encyclopedia: Port mirroring
		Port mirroring is used on a network switch to send a copy of all network packets seen on one switch port to a network monitoring connection on another switch port.
		Port mirroring on a Cisco Systems switch is generally referred to as Switched Port Analyzer (SPAN); some other vendors have other names for it, such as Roving Analysis Port (RAP) on 3Com switches.
		Spanning tree prevents duplicate packets from being received on looped ports by filtering packets from all but one of the looped ports (an example is when two switches are connected by two cables, thus creating a loop, one of these connections will be disabled by the Spanning tree function).
	www.nationmaster.com /encyclopedia/Port-mirroring (501 words)

	NationMaster - Encyclopedia: Ethernet Switch
		If the destination port is the same as the originating port, the frame is filtered out and not forwarded.
		Port mirroring -- the switch sends a copy of network packets to a monitoring network connection.
		SMON -- "Switch Monitoring" is described by RFC 2613 and is a protocol for controlling facilities such as port mirroring.
	www.nationmaster.com /encyclopedia/Ethernet-Switch (711 words)

	CallRex VoIP Recording & the Nortel BCM
		Packet sniffing is achieved by enabling port mirroring on the data switch.
		Port mirroring is supported by most data switches and when enabled will send a copy of every packet destined for one port to another port.
		Nortel BCM is plugged into port 24 (the Observe port) on the data switch.
	www.telrex.com /partners_nortel_bcmnd.htm (101 words)

	Talisker Switch Port Mirroring
		This was overcome by configuring a switch to replicate the data from all ports or VLAN's onto a single port.
		you are mirroring a port then it must be on the same blade as the port being mirrored to.
		“port monitor”, by itself, will configure the port to monitor all ports on the switch that belong to the vlan that port is assigned to.
	www.securitywizardry.com /switch.htm (1104 words)

	Setting Up Port Mirroring
		Configuring an RMON mirror port allows you to mirror traffic from a port or set of ports to a specific mirror port, where you can attach a sniffer or RMON probe.
		Tagged packets that are sent into a source port with a VLAN ID to which the source port is not bound, are not transmitted out the mirror port.
		Two port mirroring features are available for the Avaya Multiservice switches: Fabric mode 1 port mirroring and Fabric mode 2 port mirroring.
	support.avaya.com /elmodocs2/p882/v6.1/zydeco6_1/p580_p882ms/NetwkPerform-Ch235.html (314 words)

	What is port mirroring? - a definition from Whatis.com - see also: roving analysis port
		- Port mirroring, also known as a roving analysis port, is a method of monitoring network traffic that forwards a copy of each incoming and outgoing packet from one port of a network switch to another port where the packet can be studied.
		An administrator configures port mirroring by assigning a port from which to copy all packets and another port where those packets will be sent.
		The monitor port may be a port on the same SwitchModule with an attached RMON probe, a port on a different SwitchModule in the same hub, or the SwitchModule processor.
	searchnetworking.techtarget.com /sDefinition/0,,sid7_gci511650,00.html (369 words)

	Technical Support Nebula 4000 Workgroup Switch
		A: Fast Port is a special implementation of the STA to increase Spanning Tree performance when the port is directly connected to either a server or client.
		Local traffic: packets destined for hosts located on the same port the packet was received on are not forwarded through the switch, they are filtered and stay on the same port.
		The third possibility is that you may have inadvertently disabled the port used to communicate with the Nebula.
	www.pt.com /support/supp_Nebula4000.html (2782 words)

	Traffic Filtering and Monitoring (Site not responding. Last check: 2007-10-21)
		If you configure multiple mirror ports on the same module, the inbound traffic for all the monitored ports on the module is sent to all the mirror ports on the same module.
		For example, if you configure ports 1/1 and 1/13 as mirror ports, then enable monitoring of inbound traffic on ports 1/2 and 1/14, the traffic from both ports is mirrored to both the mirror ports, 1/1 and 1/13.
		Port 4/1 is the mirror interface, to which the software copies ("mirrors") the traffic on port 4/3.
	www.foundrynet.com /services/documentation/sci_user/L2.html (4722 words)

	Promiscuous Monitoring in Ethernet and Wi-Fi Networks - Port Mirroring Configuration
		To configure port mirroring in your switch, please refer to the documentation that comes with it.
		After selecting "Mirror" on the left pane of the Web management console, you select the Sniffer Mode option (Tx, Rx, or Both), Sniffer Port, i.e.
		the port to which packets will be replicated, and select Source Ports from which packets should be mirrored.
	www.tamos.com /htmlhelp/monitoring/portmirroringconfiguration.htm (140 words)

	Switch and port monitoring
		However, most modern switches (management switches) support "port mirroring", which is a feature that allows you to configure the switch to redirect the traffic that occurs on some or all ports to a designated monitoring port on the switch.
		Mirror the way out port to the management port (mirror port), in this way the entire data transmitted into/out of LAN can be monitored.
		Mirror all way out ports to the management port (mirror port), in this way not only the entire data transmitted into/out of LAN but also the communication among hosts in LAN can be monitored.
	www.javvin.com /packetdoc/SwitchandPortMirroring.html (372 words)

	Observer Switch Management
		Port capture (otherwise known as "static" monitoring) allows you to set a Probe to capture all the data and traffic from one port and redirect it to the Probe management port.
		Looping is the ability to have a Probe "loop" through all ports on the switch and collect statistics on the switch as a whole.
		Because Observer knows how long each port was sampled and how long it took to move to the next port, it can put all of the data together using statistical sampling calculations and provide a complete view of traffic on your entire switch.
	www.networkinstruments.com /products/observer_switch.html (1137 words)

	Network taps vs. port mirroring (Site not responding. Last check: 2007-10-21)
		Traffic from one or more network ports is switched through the backplane to its normal destination port and copied to the mirror port.
		Some switches, however, are only able to mirror traffic flowing into the ports, while others are able to mirror both in and out traffic of a mirrored port.
		Port mirroring is economical and easy to use, with no new equipment required, allows viewing of traffic on all links of a VLAN on a switch, as well as viewing data from multiple links, mirrored to one analyzer.
	www.comnews.com /stories/articles/c0603taps.htm (644 words)

	XEmacs: The next generation of Emacs
		The port is still experimental and available only as a 3rd-party patch as of today, but a binary package is planned, and discussion is underway as to how to best support Andrew's work and prepare it for merge to mainline.
		Jarvis was responsible for the ports of XEmacs 19.14 to MacOS 8, and of XEmacs 21.5.9 to Mac OS X (the "Carbon" branch).
		port of XEmacs 19.14 is available for their platform of choice.
	www.xemacs.org (1265 words)

	Intel® Express 100Base-TX Switching Hub - What is Port Mirroring?
		Port Mirroring is a network debugging feature which allows the network manager to determine the location of a problem on his network simply and efficiently.
		Port Mirroring is configured by assigning a port from which to copy all frames, and a port to which to send those frames.
		Finally, when the process is started, all frames bound for or sourced from the selected source port will be sent (in addition to their regular destinations) to the selected destination port.
	www.intel.com /support/express/switches/100basetx/sb/cs-010901.htm (232 words)

	Measuring network hardware utilization
		When a packet of data passes through a port on a switch, that packet is sent to only the port to which the destination device is connected.
		The basic idea behind port mirroring is you can mirror the traffic that's flowing through ports of your choosing to a special monitoring port.
		Port mirroring is a generic term; the various switch manufacturers each have their own names for the technology.
	whatis.techtarget.com /tip/0,289483,sid7_gci1224303,00.html (1204 words)

	Documentation
		To enable a GBIC module instead of the built-in 10/100/1000BASE-T port for a Gigabit Ethernet uplink, navigate to the desired port number and press the spacebar to enable the GBIC module.
		Port Priority allows the user to specify which ports have greater precedence in situations where traffic may be buffered in the switch due to congestion.
		When port mirroring is enabled, all the transmission or receiving traffic of the mirrored port is forwarded to the mirroring port.
	support.dell.com /support/edocs/network/1j052/en/ug/3024c44.htm (3321 words)

	Technical Support Nebula 8000 Fault Tolerant Switch
		A: If the uplink ports are not in similar positions (such as ports 1 & 17 or 2 & 18) the switch bridges the top and bottom switches together.
		A better solution is to set each uplink port with the ‘Fast Port’ feature on, so packet forwarding will occur immediately in the event of a switch failure.
		If the uplink ports are in similar positions (such as ports 1 & 17 or 2 & 18) the result from a fail-over appears as a single spanning tree port from the Nebula 8000 perspective and no negative impact will be seen.
	www.pt.com /support/supp_Nebula8000.html (3166 words)

	Talisker Switch Port Mirroring
		Port Mirroring usually indicates the ability to copy the traffic from a single port to a mirror port but disallows any type of bidirectional traffic on the port.
		you are mirroring a port then it must be on the same blade as the port being mirrored to.
		“port monitor”, by itself, will configure the port to monitor all ports on the switch that belong to the vlan that port is assigned to.
	securitywizardry.com /switch.htm (1104 words)

	Port mirroring on a cisco 2950
		Cisco - Port mirroring on a cisco 2950
		What kind of port mirroring is available on a Cisco 2950 ?
		Additionaly is it possible to transfert port mirroring between 2
	www.velocityreviews.com /forums/t33240-port-mirroring-on-a-cisco-2950.html (162 words)

	S 2.282 Monitoring of routers and switches - IT Grundschutz Manual 2004
		To analyse the data traffic it is possible to configure one port of the router or switch as a mirror port.
		This entails replicating all the data traffic of a given port to the mirror port.
		The mechanism offers two analysis methods: mirroring of the entire data traffic for a defined port or mirroring of the data traffic for one MAC address.
	www.bsi.de /english/gshb/manual/s/s02282.htm (1125 words)

	Understanding Port Mirroring ~ IT Professionals
		Port Mirroring works by forwarding a copy of all inbound and outbound packets from one port of a switch to another port (designated by an administrator).
		To use Port Mirroring an administrator must specify from which port to copy inbound and outbound packets and to which port the packets will be sent to.
		When configuring port mirroring you specify at least one source port, this being the port number from which traffic is copied and one destination port, this being the port to which traffic is copied.
	www.lockergnome.com /nexus/it/2007/03/19/understanding-port-mirroring (620 words)

	Intel® Device View for Web - Express 10/100 Fast Ethernet Switch and 100BASE-T Switching Hub Management
		Port mirroring allows you to set up a port to mimic the settings and data transmission of another port.
		For example, if you want the specified MAC address on port 3 to be able to talk to devices on port 4, click the box at the intersection of row 3 (source) and column 4 (destination).
		The Source axis represents the port that packets arrive on, and the Destination axis represents where those packets are allowed to travel.
	support.intel.com /support/deviceview/sb/CS-013363.htm (2165 words)

	Port Mirroring auf Cisco Catalyst 2900 XL und 3500 XL einrichten :: network lab
		Port Mirroring auf Cisco Catalyst 2900 XL und 3500 XL Um einen Sniffer wie Ethereal oder ein IDS wie Snort oder Prelude an einem Switch zu betreiben, benötigt der Adminstrator einen Spiegelport.
		Wird das Port Mirroring auf Basis von Ports eingerichtet wird, spricht Cisco von PSPAN (Port-Based SPAN).
		Port Mirroring auf Cisco Catalyst 2940, 2950, 2955, 2970 und 3550 [lokal]
	www.nwlab.net /tutorials/cisco/port-mirroring-2900-3500.html (374 words)

	Installing TracePlus/Ethernet for optimal network monitoring (Site not responding. Last check: 2007-10-21)
		In a switched network environment, a packet analyzer is limited to capturing broadcast packets, multicast packets and packets sent or received by the network adapter of the PC where the packet analyzer is installed.
		Port mirroring forwards copies of packets on each of the selected port(s) to another selected port.
		In order for this to work properly, you will need to enable Port Mirroring on the ports that are connected to the workstations and servers.
	www.sstinc.com /network_traffic.html (905 words)

	Intel® Express 100Base-TX Switching Hub - What is Port Mirroring?
		Port Mirroring is a network debugging feature which allows the network manager to determine the location of a problem on his network simply and efficiently.
		Port Mirroring is configured by assigning a port from which to copy all frames, and a port to which to send those frames.
		Finally, when the process is started, all frames bound for or sourced from the selected source port will be sent (in addition to their regular destinations) to the selected destination port.
	www.intel.co.jp /support/express/switches/100basetx/sb/cs-010901.htm (232 words)

	Installation Layouts
		Mirror the port of way out to the management port (port mirroring), in this way the entire data transmitted into/out of LAN can be monitored.
		Mirror all the ports of way out to the management port (port mirroring), in this way not only the entire data transmitted into/out of LAN, but also the communication among hosts in LAN can be monitored.
		Commonly management switches have the function of port mirroring; however, the port mirroring configuration of one brand¡¯s switch may differ from others, please refer to the documentation that comes with your switch for information on availability of this feature and configuration instructions.
	www.networkdictionary.com /networking/InstallationLayouts.php (346 words)

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