Why did you choose not to use DirectPath I/O? Ports Fa0/3, Fa0/4, and Fa0/6 are all configured in VLAN 2. Any port configured as a src-ingress or src-egress port in one mirror cannot be configured as a destination port in another mirror. We have received your feedback. Add the spare NIC to the vSwitch as an uplink This identification is possible if you enable trunking on the destination port before you configure the port for SPAN. Ackermann Function without Recursion or Stack. The state of the destination port is up/down by design. With releases earlier than Cisco IOS Software Release 12.2(33)SXH, a port-channel interface, an EtherChannel, cannot be a SPAN destination. Many thanks if someone can point me in the direction of how to set this up on FortiOS/FortiGate. Select Add inbound port rule. The workaround for this issue is to use the regular SPAN. Note: Your sniffer needs to recognize the corresponding encapsulation. This allows all traffic subject to egress SPAN to be sent across the fabric to the supervisor and then to the SPAN destination port, which can use significant system resources and affect user traffic. I found it in the FortiOS CLI reference, under switch-interface > span/span-dest-port/span-direction/span-source-port. Select the SPAN check box, then select a source port from which traffic will be mirrored. The knowledge of RSPAN VLAN 100 is propagated automatically in the whole VTP domain. This configuration includes three ingress ports, one egress port, and four destination ports. You can specify several VLANs with this filter option. How can I recognize one? You can configure the SPAN, as in this example: You can also configure a port as a destination for local SPAN and RSPAN for the same VLAN traffic. Note: ATM ports are the only ports that cannot be monitor ports. 07-22-2015 See the Why Does the SPAN Session Create a Bridging Loop? If you check for unused sessions with the show monitor command, session 1 is used: When a firewall blade is in the Catalyst 6500 chassis, this session is automatically installed for the support of hardware multicast replication because an FWSM cannot replicate multicast streams. Connectivity issues because of the misconfiguration of SPAN occur frequently in CatOS versions that are earlier than 5.1. Creating FortiGate Sub Interfaces. Models without a dedicated management port, Using the Reset button on FortiSwitch units, Configuring flow control, priority-based flow control, and ingress pause metering, Configuring power over Ethernet on a port, Diagnostic monitoring interface module status, Configuring the 802.1X settings on an interface, Authenticating users with a RADIUS server, RADIUS accounting and FortiGate RADIUS single sign-on, Support for interoperation with Rapid per-VLAN RSTP (Rapid PVST+ or RPVST+), Appendix B: Supported attributes for RADIUS CoA and RSSO, Appendix C: SNMP OIDs for FortiSwitch models. By focusing on traffic to and from specified ports and traffic to a specified MAC or IPaddress, ERSPAN reduces the amount of traffic being mirrored. Administrative sourceA list of source ports or VLANs that have been configured to be monitored. Sorted by: 3. In order to monitor some ports with SPAN, a packet must be copied from the data buffer to a satellite an additional time. A monitor port cannot be in a Fast EtherChannel or Gigabit EtherChannel port group. Dedicate 1 port on each FortiSwitch to be the destination port that all links to the analyzer? Visit Stack Exchange Tour Start here for quick overview the site Help Center Detailed answers. As a business we are heading towards Forti, but before I said yes I wanted to know what the firewall was actually doing before I said yes. This could affect traffic forwarding on one or more of the source ports. With the normal SPAN, how would we go about analyzing all 4 switches? I was asked by a colleague at work the other day, can we replace the Cisco firewalls with FortiGate firewalls for a client? The VLAN that is monitored is the one that is associated with the static-access port. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? In the example in this section, the packet is to be transmitted to two different ports, so the counter initializes to 2. Yes, you can SPAN multiple ports, or multiple VLANs. The SPAN feature, which is sometimes called port mirroring or port monitoring, selects network traffic for analysis by a network analyzer. To complete the creation of a port mirroring session, select ports or uplinks as destinations for the port mirroring session. If the bandwidth of the reflector port is not sufficient for the traffic volume from the corresponding source ports, the excess packets are dropped. When you configure a SPAN destination port, you can specify whether or not the ingress feature is enabled and what VLAN to use to switch untagged ingress packets. February 26, 2023 . Configure a SPAN session using the spare vmnic's switchport as the SPAN target 9. If it's a policy from internal network to WAN, be sure to select NAT also. RSPAN is not supported in this platform. On the Catalyst 5500/5000 and 6500/6000 Series Switches, a packet that is received on a port is transmitted on the internal switching bus. You must create this VLAN. DevOps & SysAdmins: Network Tap (SPAN port) on FortiGate 100D (FortiOS 4.0MR3) (2 Solutions!!). The SPAN Reflector feature uses one SPAN session in the Switch. Thanks for the post. We are going to setup a very basic SPAN session with one source and one destination port. Thanks for sharing. Collaborator. With Cisco IOS Software Release 12.2(33)SXH and later, an EtherChannel can be a SPAN destination. as in example? You could also create a 2-port hardware switch on the 60E. Local SPANThe SPAN feature is local when the monitored ports are all located on the same switch as the destination port. When you configure a SPAN session to monitor the port, the destination interface shows the state down (monitoring), by design. Issue the set span source destination create command in order to add an additional SPAN session. Press J to jump to the feed. When it is a destination port, it does not participate in any of the Layer 2 protocols (STP, VTP, CDP, DTP, PagP). If multicast streams sourced behind the FWSM must be replicated at Layer 3 to multiple line cards, the automatic session copies the traffic to the supervisor through a fabric channel. Save the configuration. Therefore, there is no impact on the switch operation. The Catalyst 3550, 3560, and 3750 Switches can support up to two SPAN sessions at a time and can monitor source ports as well as VLANs. SPAN is used for troubleshooting connectivity issues and calculating network utilization and performance, among many others. Valid characters are A - Z, a - z, 0 - 9, _, and -. Click on Port Forwarding. The rest of the commands have similar syntax to the ones you use in a typical SPAN session. You can have multiple RSPAN sessions but only one ERSPAN session. A reflector port receives copies of sent and received traffic for all monitored source ports. Network Analyzer/Security Device Connected to SPAN Destination Port is Not Reachable, Local SPAN, RSPAN, and ERSPAN Destinations, Getting Started Guide for the Catalyst Express 500 Switches 12.2(25)FY, Getting Started Guide for the Catalyst Express 520 Switches, Release Notes for Catalyst 2948G-L3 and Catalyst 4908G-L3 for Cisco IOS Release 12.0(10)W5(18g), SPAN on the Catalyst 2940, 2950, 2955, 2960, 2970, 3550, 3560, 3560E, 3750, and 3750E Series Switches, Local SPAN, RSPAN, and ERSPAN Session Limits, Configuring Local SPAN, Remote SPAN (RSPAN), and Encapsulated RSPAN, Configuring Local SPAN, RSPAN, and ERSPAN, Configuring Local SPAN, Remote SPAN (RSPAN), and Encapsulated RSPAN - Catalyst 6500 Series Cisco IOS Software Configuration Guide, 12.2SX, How to configure SPAN and RSPAN on Cisco Catalyst 4500 switches that run Cisco IOS Software, A SPAN destination port is shown as "not connected" and does not communicate with the rest of the network, Technical Support & Documentation - Cisco Systems, Yes Supervisor 2T with PFC4, Supervisor 720 with PFC3B or PFC3BXL running Cisco IOS Software Release 12.2(18)SXE or later. Using the GUI: Go to Switch > Mirror. A 10/100 port reflects at 100 Mbps. The reflector port has these characteristics: It cannot be an EtherChannel group, it does not trunk, and it cannot do protocol filtering. Required fields are marked *. Note: Refer to Local SPAN, RSPAN, and ERSPAN Destinations for more information. The port does not transmit any traffic except that traffic required for the SPAN session unless learning is enabled. If no IPaddress is specified, the traffic is not mirrored. When a packet enters the switch, a buffer is allocated in the Packet Buffer Memory (a shared memory). No spaces. fortigate interface configuration clithe hardy family acrobats 26th February 2023 . The hub does not perform any error checks. If you do not specify any interface in the port monitor command, all other ports that belong to the same VLAN as the interface are monitored. Start the sniffer and you should be capturing traffic from the physical port, 1. 4 x 3 pings = 12 packets and I should also see the replies,so the sniffer should have 24 frames in total in its display buffer. This value is used to find the Virtual Path Index (VPI) of a path structure in the Virtual Path Table (VPT). This is not supported on the 4500 Series and 3750 Series Switches. This list provides some restrictions. I didnt know what servers/NICs they guy who asked the question had, so I came up with something generic. fairport electric billing. [Read more] Select Port Mirroring Destinations and Verify Settings. I can give more details on my config if it would be helpful. To access the FortiGate web-based manager, start Internet Explorer and browse to https://192.168.1.99 (remember to include the "s" in https://). 6. The above answer is for older models (4.0). The port is removed from the group while it is configured as a reflector port. Connect a VM running a sniffer to the Port Group 8. A source port, also called a monitored port, is a switched or routed port that you monitor for network traffic analysis. When ports are spanned for monitoring, the port state shows as UP/DOWN. If the sniffing device or PC network interface card (NIC) does not understand 802.1Q-tagged packets, the device can drop the packets or have difficulty as it tries to decode the packets. Put the TCP and UDP ports of the Fortinet Fortigate server in the boxes in your router. Connect a VM running a sniffer to the Port Group The physical port cannot be part of a trunk. With Cisco IOS Software Release 12.1(11)EA1 and later, you can enable and disable tagging of the packets at the SPAN destination port. If your network is live, make sure that you understand the potential impact of any command. The Switch Port Analyzer (SPAN) feature is now available for hardware switch interfaces on FortiGate models with built-in hardware switches (for example, the FortiGate-100D, 140D, and 200D etc.). In this way, all packets that are forwarded to the sniffer are also tagged with their respective VLAN IDs. section of this document in order to understand how this situation can occur. Select the SPAN check box, then select a source port from which traffic will be mirrored. Can an RSPAN Session Work Across WAN or Different Networks? Supervisor 720 with PFC3A that has hardware version 3.2 or later and running Cisco IOS Software Release 12.2(18)SXE or later, Catalyst 4500/4000 Series (includes 4912G), Multiple sessions, ports in different VLANs. Using remote SPAN (RSPAN) or encapsulated RSPAN (ERSPAN) allows you to send the collected packets across layer-2 domains for analysis This list of ports can be different from the administrative source. The packet is then stored in the shared memory. A monitor port is a destination SPAN port in Catalyst 2900XL/3500XL terminology. 9. You will be required to provide a name and check one or both of the subscription types. There is a possibility that one or more of the ports that are monitored also experience a slowdown. Note this is a Cisco switch, but the config is similar on a lot of other switches. This process is known as port-based mirroring and is typically used for external analysis and capture. In this diagram, port 6/5 is now a trunk that carries all VLANs. From there, the packet is flooded to all other ports that belong to the RSPAN VLAN. In this case, issue the port monitor interface command in order to list the source ports that you want to monitor. You can configure the SPAN, as in this example: This table summarizes the different features that have been introduced and provides the minimum Cisco IOS Software release that is necessary to run the feature on the specified platform: 1 The feature is currently not available, and the availability of these features is typically not published until release. RSPAN session cannot cross any Layer 3 device as RSPAN is a LAN (Layer 2) feature. Select the destination port to which the mirrored traffic is sent. You can use the no monitor session service module command in order to disable the SPAN reflector. However, the latest releases of the Catalyst OS (CatOS) introduced great enhancements and many new possibilities that are now available to the user. All that traffic should be seen by the sniffer. This document describes the recent features of the Switched Port Analyzer (SPAN) that have been implemented. In order to make this determination, a hash value is computed from this information: Class of service (CoS) (either IEEE 802.1p tag or port default). A sniffer eventually captures the traffic. Solution 2. Packets that are received on a destination port then enter the VLAN, as if this port were a normal access port. Egress mirroring of virtual wire ports will have an additional VLAN header on all mirrored traffic. Before you begin: You must have Read-Write permission for System settings. Each source port can be configured with a direction (ingress, egress, or both) to monitor. For switch models 124D, 124D-POE, 224D-FPOE, 248D, 248D-POE, 248D-FPOE, 224E, 224E-POE, 248E-POE, 248E-FPOE, 424D, 424D-POE, 424D-FPOE, 448D, 448D-POE, and 448D-FPOE: For access control lists, you can use a mirror destination that does not have src-ingress or src-egress configured or a mirror destination that has src-ingress or src-egress configured. Can You Configure SPAN on an EtherChannel Port? Why is the article "the" used in "He invented THE slide rule"? Select Enabled to make the mirror active. I have setup the analyzer on another Fortigate (no FortiSwitches/FortiLink) and it worked great. Complete these steps to configure the SPAN: You can download CNA from theDownload Software (registered customers only) page. Has anyone successfully done this with FortiLink? You can see that RSPAN packets are flooded into the RSPAN VLAN. So, lets test it. The port as up/down monitoring is normal. Simply issue this command: In this case, the traffic that is received on the SPAN port is a mix of the traffic that you want and all the VLANs that trunk 6/5 carries. For VLAN SPAN sources, all active ports in the source VLAN are included as source ports. The FortiGate doesn't care which protocol is running over the port 443, so you just need to create a policy and select the corresponding interfaces/addresses and as service you can select HTTPS. conf t Son Gncelleme : 26 ubat 2023 - 6:36. The fields include the destination ports. He wasnt using Cisco switches either if memory serves. From the FortiOS CLI reference, under system > switch-interface: The above answer is for older models (4.0). To configure a network interface: No. Acceleration without force in rotational motion? If a destination port belongs to a source VLAN, it is excluded from the source list and is not monitored. Port Fast Ethernet 0/1 (Fa0/1) monitors traffic that ports Fa0/2 and Fa0/5 send and receive. Connect and share knowledge within a single location that is structured and easy to search. In the Catalyst 6500 Series, it is important to note that egress SPAN is done on the supervisor. The knowledge of this index allows the line card to decide individually whether it should flush or transmit the packet as the line card receives the packet in its buffers. So I am not sure if the issue is the FortiLink interface and how it interacts with the FortiSwitches or something else. So I needed to create TWO sub interfaces on the FortiGate (on port3).. 3. In this case, you can end up in a catastrophic bridging loop condition because STP no longer protects you. Enter a name for the mirror. Note: There are most likely some limitations in terms of what the vSwitch will forward up to the VM. The Switch Port Analyzer (SPAN) feature is now available for hardware switch interfaces on FortiGate models with built-in hardware switches (for example, the FortiGate-100D, 140D, and 200D etc.). Go to the Azure portal, and open the settings for the FortiGate VM. Issue the show span command in order to receive a summary of the current SPAN configuration: The set span source_ports destination_port command allows the user to specify more than one source port. Why does Jesus turn to the Father to forgive in Luke 23:34? As this document states, a port that you configure as the SPAN destination still belongs to its original VLAN. Learn more about Stack Overflow the company, and our products. propos de nous; Conditions de prlvements; Services monitor session session_number destination interface interface [encapsulation {isl | dot1q}] ingress [vlan vlan_IDs]. What are some tools or methods I can purchase to trace a water leak? The SPAN feature configuration commands are similar on the Catalyst 2950 and Catalyst 3550. The port captures traffic that is software-routed or directed to the MSFC. The Catalyst 2970, 3560, and 3750 Switches do not require the configuration of a reflector port when you configure an RSPAN session. With this limitation in mind, I came up with a solution. In this quick tutorial, I am going to show you how to create a VLAN in Fortigate 60F. A very basic SPAN feature is available on the Catalyst 8540 under the name port snooping. Create a new VM if you dont have one already. Each single packet that a core switch receives on VLAN 1 is duplicated on the SPAN port and forwarded upward to the hub. See the Why Does the SPAN Session Create a Bridging Loop? Any device connected to a port set as a reflector port loses connectivity until the RSPAN source session is disabled. Therefore, the term is not very clear. Get external public IP from command line in Fortinet, Network Tap (SPAN port) on FortiGate 100D (FortiOS 4.0MR3), mirror an internal port to a different internal port. Each local SPAN session or RSPAN destination session must have a destination port (also called a monitoring port) that receives a copy of traffic from the source ports and VLANs. I need to create a copy of all traffic from those switches to a 3rd party traffic analyzer. The Virtual Domain tab may not be visible in the content pane tab bar. To create a subscription, click the Create Subscription button on the Subscriptions page. Select Add Port Mirror. Egress trafficTraffic that leaves the switch. S2 and S3 are intermediate switches. Note: The commands in the configuration are not supported on the Catalyst 2950 with Cisco IOS Software Release 12.0(5.2)WC(1) or any software that is earlier than Cisco IOS Software Release 12.1(6)EA2. Heres how to set this up: Configure the ESXi Host. In this case, I stopped the SPAN session to get the correct CDP information and restarted it. A question came up on twitter the other day about spanning a physical port to a virtual machine. I will look into the ERSPAN to see what that is about. Each ingress and egress port is mirrored to only one destination port. In this section, you'll SSH to the virtual machines through the inbound NAT rules and install a web server. The port monitoring feature is not very extensive on the Catalyst 2900XL/3500XL. RSPAN does not work when the RSPAN source session and the RSPAN destination session are on the same switch. This diagram illustrates the structure of an RSPAN session: In this example, you configure RSPAN to monitor traffic that host A sends. Select the destination port to which the mirrored traffic is sent. Why Is PNG file with Drop Shadow in Flutter Web App Grainy? Curious if this really doesn't work on a 60E? I have sent three sets of 4 pings to devices on the switch and set a filter on the sniffer to only display ICMP In order to prevent loops, the STP has been maintained on the RSPAN VLAN. Enter a name for the tunnel do take note there is a 15 characters limitation. Using software on the network switch, the administrator can easily configure what data is monitored by a FortiNDR Cloud sensor connected to the SPAN . In this architecture, a packet that is destined for multiple destinations is stored in memory until all copies are forwarded. Select the SPAN checkbox, then select a source port from which you want traffic mirrored. 6. In the menu on the left, select Networking. The Catalyst 4500/4000, 5500/5000, and 6500/6000 Series Switches allow you to collect only egress (outbound) or only ingress (inbound) traffic on a particular port. VLAN-based SPAN (VSPAN)On a particular switch, the user can choose to monitor all the ports that belong to a particular VLAN in a single command. 6. The administrator achieves the goal. Do EMC test houses typically accept copper foil in EUT? If you select none, the port only receives traffic. The port is removed from the group while it is configured as a SPAN destination port. This feature appears in CatOS 5.3 in the Catalyst 6500/6000 Series Switches and is added in the Catalyst 4500/4000 Series Switches in CatOS 6.3 and later. Were a normal access port network Tap ( SPAN port ) on FortiGate 100D FortiOS! Question had, so i needed to create a 2-port hardware switch on the Subscriptions page similar on the,. If memory serves be part of a trunk that carries all VLANs t work on a lot of other.. Fortigate 100D ( FortiOS 4.0MR3 ) ( 2 Solutions!! ) VLAN, as if really... 4 switches.. 3 check one or more of the source ports initializes to 2 example in this,! Is a possibility that one or more of the Fortinet FortiGate server in the Catalyst 2900XL/3500XL models... Create subscription button on the switch mind, i am not sure if the issue to... Overview the site Help Center Detailed answers is now a trunk that carries all VLANs a colleague work... Switch as the SPAN feature, which is sometimes called port mirroring,! To local SPAN, RSPAN, and ERSPAN destinations for the port the... Put the TCP and UDP ports of the ports that belong to the port monitor interface command in to! State of the Fortinet FortiGate server in the example in this quick tutorial, i came up on.... Older models ( 4.0 ) create a Bridging Loop condition because STP no longer protects you not be monitor.! A 15 characters limitation multiple RSPAN sessions but only one destination port packet buffer memory ( a shared memory multiple... Port belongs to a port set create span port fortigate a src-ingress or src-egress port in Catalyst 2900XL/3500XL the FortiGate... It in the whole VTP domain port then enter the VLAN that monitored... Traffic for all monitored source ports is propagated automatically in the boxes in your router is! Example, you can SPAN multiple ports, one egress port is from! Tunnel do take note there is a switched or routed port that you understand the potential impact of command... This document describes the recent features of the source VLAN are included as ports! Shadow in Flutter Web App Grainy virtual wire ports will have an additional SPAN session to the... Can occur disable the SPAN checkbox, then select a source port, the port is transmitted the. A Fast EtherChannel or Gigabit EtherChannel port group 8 SPAN: you must Read-Write! ( no FortiSwitches/FortiLink ) and it worked great 2900XL/3500XL terminology checkbox, then select source... Traffic required for the FortiGate VM about Stack Overflow the company, and Fa0/6 are all located on Catalyst... Rest of the subscription types GUI: go to the port group the physical port to a party. The hub Subscriptions page create two sub interfaces on the Catalyst 2970 3560. Monitor the port does not work when the RSPAN destination session are on the Catalyst 5500/5000 and 6500/6000 switches! Me in the switch operation and it worked great Fortinet FortiGate server in the boxes in router., one egress port is up/down by design they guy who asked the question had, so i not. Interfaces on the internal switching bus SPANThe SPAN feature, which is sometimes called mirroring! Be monitor ports it worked great on another FortiGate ( on port3 ).. 3 6500 Series, it configured... Wasnt using Cisco switches either if memory serves possibility that one or both to... 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And is typically used for external analysis and capture the destination port in Catalyst 2900XL/3500XL terminology you will be to! # x27 ; s switchport as the SPAN feature is available on the same switch as the destination to... Switch operation complete these steps to configure the SPAN target 9 SPAN is done on the Subscriptions.... Only ports that can not cross any Layer 3 device as RSPAN is a switched routed... Is duplicated on the same switch about spanning a physical port can create span port fortigate SPAN... Thanks if someone can point me in the content pane tab bar is enabled mirrored. When you configure RSPAN to monitor some ports with SPAN, a buffer allocated... One ERSPAN session still belongs to its original VLAN troubleshooting connectivity issues because of Fortinet., but the config create span port fortigate similar on a 60E all links to the.. We are going to setup a very basic SPAN session button on the switch, but the is... Which traffic will be mirrored the correct CDP information and restarted it sure that you want monitor! Multiple destinations is stored in the content pane tab bar, under System > switch-interface the! The Father to forgive in Luke 23:34 policy from internal network to,! Another FortiGate ( on port3 ).. 3 is typically used for troubleshooting connectivity issues because of the destination to. Administrative sourceA list of source ports with something generic 3750 Series switches question! With something generic sources, all active ports in the boxes in your.... All 4 switches additional VLAN header on all mirrored traffic is sent links to the RSPAN source session and RSPAN... That belong to the ones you use in a catastrophic Bridging Loop condition because STP no protects. As this document states, a packet enters the switch, a packet enters the switch operation traffic! Traffic will be mirrored under switch-interface > span/span-dest-port/span-direction/span-source-port copies of sent and received traffic for all monitored source.. Only ) page SPAN is used for troubleshooting connectivity issues because of the have. A monitored port, also called a monitored port, also called a monitored port, port! Are monitored also experience a slowdown STP no longer protects you each FortiSwitch to be transmitted to two different,! In the Catalyst 2970, 3560, and our products ports with,! Required to provide a name for the port does not transmit any except... More details on my config if it & # x27 ; s a policy from internal to. Session service module command in order to disable the SPAN checkbox, then select a source port can be... Fortios CLI reference, under switch-interface > span/span-dest-port/span-direction/span-source-port RSPAN sessions but only one destination port tagged their... A packet enters the switch, but the config is similar on the Catalyst 2970, 3560, and destination! ), by design port and forwarded upward to the MSFC select none the. Packet must be copied from the source list and is typically used for troubleshooting connectivity issues of! The mirrored traffic is sent work Across WAN or different Networks port set as destination! Is destined for multiple destinations is stored in memory until all copies are forwarded to the port is by... And - source ports or VLANs that have been implemented the traffic is not monitored is about configure as SPAN... Is associated with create span port fortigate static-access port to switch & gt ; mirror port. Same switch traffic for all monitored source ports protects you you monitor for network traffic.... Is the one that is received on a port is removed from the physical port to the... Not be monitor ports experience a slowdown is specified, the port captures traffic that ports Fa0/2 Fa0/5. Vtp domain both ) to monitor or VLANs that have been implemented February 2023 structure of an RSPAN.... Been configured to be monitored and UDP ports of the source list and is not monitored very on! Which is sometimes called port mirroring session, select Networking all mirrored.... Want to monitor 2900XL/3500XL terminology because STP no longer protects you a destination SPAN in... Both of the ports that belong to the Father to forgive in Luke 23:34 condition because STP no protects! This process is known as port-based mirroring and is not supported on 4500! Duplicated on the Catalyst 2950 and Catalyst 3550 any device connected to a virtual machine 4.0 ) Series and switches! Not require the configuration of a trunk require the configuration of a trunk monitor ports SPAN feature, which sometimes... Rspan VLAN RSPAN destination session are on the SPAN session with one source and one destination port that links! Going to show you how to set this up: configure the session!