The S3900 series switches consist of three models: S3900-24T4S, S3900-24F4S, S3900-48T4S, which are fully managed stackable Gigabit switches, equipped with Broadcom chips, supporting 10G SFP+ uplinks, designed for SMB, campus and enterprise networks.
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Port mirroring is used on a network switch or router to send copies of packets on the specified ports (source ports) to other specified ports (destination ports). FS S3900 series switches are the ideal Gigabit access and aggregation switches for SMB, enterprise and campus networks. They support port mirroring to help users monitor and analyze network traffic, and debug data or diagnose errors on a network.
Port mirroring includes local port mirroring and remote port mirroring based on the working range of mirroring.
Choose local mirroring mode when source ports and destination ports are on one S3900 switch. Take S3900-48T4S port mirroring application as an example. Once port mirroring is set, the source port (11) will copy the packet to the destination port (10), then users can use the monitoring device to monitor and analyze data from the client device.
In remote mirroring, source ports and destination ports do not belong to one S3900 switch. Destination port on one switch can monitor the source port on another switch via the connection between the two different switches. Take remote port mirroring application of S3900-48T4S and S3900-24T4S as an example. Set S3900-48T4S port (5) as the source port, and set S3900-24T4S port (5) as the destination port. And make an uplink connection between the two switches via the ports (10) on two sides. Thus, users can use the monitoring device connected to S3900-24T4S to monitor and analyze the data from the client device connected to S3900-48T4S switch.
SS3900 series switches consist of S3900-24F4S, S3900-24T4S and S3900-48-T4S. All support port mirroring. Rates of source port and destination port should be matched when applying local and remote port mirroring. Sometimes, the destination port rate can be higher than that of the source port, but never less than that of the source port.
Note that:
Configuration takes effect after setting one port as the source port and setting another port as the destination port in local port mirroring.
When creating a mirroring group, only one destination port can be set, but there could be one or more source ports in the group.
If one port has been specified as the source port in one mirroring group, it can’t be a member of another mirroring group.
If one port has been specified as the destination port in one mirroring group, it can’t be a member of another mirroring group.
It’s recommended that do not apply STP, RSTP or MSTP on the destination port, otherwise, the device may malfunction.
Running local and remote port mirroring on S3900 series switches can be achieved by CLI and web interface. Here uses CLI configuration as an example.
Create a VLAN.
Add the source port and destination port to VLAN.
Configure IP address.
Configure port mirroring on the destination port, and copy the packet from the source port to the destination port.
Verify the results.
Specify the source port in a global schema.
Configure the uplink port on one switch.
Specify the destination port in a global schema.
Verify the results.
S3900-48T4S#configure terminal
S3900-48T4S(config)#vlan database
S3900-48T4S(config-vlan)#vlan 10
S3900-48T4S(config)#interface ethernet 1/10
S3900-48T4S(config-if)#switchport mode access
S3900-48T4S(config-if)#switchport access vlan 10
S3900-48T4S(config)#vlan database
S3900-48T4S(config-vlan)#vlan 11
S3900-48T4S(config)#interface ethernet 1/11
S3900-48T4S(config-if)#switchport mode access
S3900-48T4S(config-if)#switchport access vlan 11
S3900-48T4S(config)#interface vlan 10
S3900-48T4S(config-if)#ip add 192.168.3.11 255.255.255.0
S3900-48T4S(config)#interface vlan 11
S3900-48T4S(config-if)#ip add 192.168.2.11 255.255.255.0
S3900-48T4S(config)#interface ethernet 1/10
S3900-48T4S(config-if)#port monitor ethernet 1/11 both
S3900-48T4S#configure terminal
S3900-48T4S(config)#vlan database
S3900-48T4S(config-vlan)#vlan 200 media ethernet rspan
S3900-48T4S(config-vlan)#exit
S3900-48T4S(config)#rspan session 1 source interface e 1/5
S3900-48T4S(config)#rspan session 1 remote vlan 200 source uplink e 1/10
S3900-24T4S#configure terminal
S3900-24T4S(config)#vlan database
S3900-24T4S(config-vlan)#vlan 200 media ethernet rspan
S3900-48T4S(config-vlan)#exit
S3900-24T4S(config)#rspan session 1 destination interface e 1/5
S3900-24T4S(config)#rspan session 1 remote vlan 200 destination uplink e 1/10
S3900-48T4S#show rspan session
RSPAN Session ID : 1
Source Ports (mirrored ports)
RX Only : None
TX Only : None
BOTH : Eth 1/5
Destination Port (monitor port) : None
Destination Tagged Mode : None
Switch Role : Source
RSPAN VLAN : 200
RSPAN Uplink Ports : Eth 1/10
Operation Status : Up
Voice VLAN Configuration on FS S3900 Series Switches
Traffic Segmentation Configuration on FS S3900 Series Switches
Hi, is there a way to set a default gateway for the Management Interface - or is the accesss only possible from the same network Segment? By Sebastian.Schubert on October 19, 2020
Hello, the s3900 management port is not isolated from the service interface, so you only need to write a default route. For example: IP route 0.0.0.0 0.0.0.0 10.32.133.254 By FS on October 20, 2020
My switches are running the most recent release of the software available, but the ssh server implementation is so ancient that it cannot interoperate with even a four-year-old Ubuntu 16.04 client. When can this be fixed? By Garrett.Wollman on August 26, 2020
Hello, our switch supports ssh2.0, please describe in detail "the implementation of sh server is so old". Asymmetric encryption support: RSA1, DSA2 Symmetric encryption support: AES-128, AES-192, AES-256, 3DES, des_cbc, Blowfish HASH support: MD5, SHA1 By FS on August 27, 2020
After the S3900 switches are stacked, the device has lost the stacking port. What is the reason? By henson on June 19, 2020
After the S3900 switch is successfully stacked and you check the port status through the commands, the two stacking ports of the device will disappear which is a normal situation. It is mainly to prevent misoperation. Please don't worry. By FS on June 19, 2020
Why is the calendar set time of the switch restored after restarting? By Emoef on June 18, 2020
The time of calendar set is not saved in the configuration file so it will not continue counting after the device is turned off. It is recommended to use the ntp service to synchronize the system time, so that after the switch restarts, you only need to set the next restart time, and don‘t need to set the system time again. By FS on June 18, 2020
When multiple S3900 switches are stacked, one of them will go down. Will it affect the normal operation of other switches? By Soucie on June 16, 2020
If the master is down, it will re-elect, the election process is the same as the first stack. If it is a slave downtime, there will be no impact. By FS on June 16, 2020
Can the stacking and LACP functions of the S3900 be used together? By Helfer on June 15, 2020
Yes, after the S3900 switches are stacked, they are logically one device and can implement LACP with other devices. By FS on June 15, 2020
Hello, why do I fail to upload firmware to the S3900 switch when upgrading the switch? By Dennis Haislip on June 12, 2020
The S3900 series switches only support a maximum of 2 firmwares. Please use the command dir to check whether there are currently two firmwares. If so, you need to delete one and add the new one. If there is only one, please check whether the firmware is damaged. It is recommended to download and install again. By FS on June 12, 2020
Does the S3900 switch support https import certificates? By Shuford on June 11, 2020
Yes, but there are some requirements for the size of the certificate, the maximum is 5KB and the key is 2KB. By FS on June 11, 2020
When configuring QinQ, how many QinQ can be configured for each port? By Jimmina on June 10, 2020
The S3900 series are the access layer switches, which have certain restrictions on the hardware, so the maximum entry for QinQ is 24 per port. By FS on June 10, 2020
Hello, i see you need a solution for your network; our tech and salers can help you design your whole network solution with best quality and price. And we recommend the S3900-24T4S for you to connect to the server. The function of the core switch is more abundant than that of the access layer switch. So as for the core switch, we recommend S5800-8TF12S for the core switch. By FS on June 9, 2020