Unifi Switch Flex | USW-Flex

Product Information

PoE passthrough is when a PoE device can receive power and also pass PoE to another downstream device. A common example would be a 24 port PoE switch, feeding an In-Wall-HD access point, with a video camera connected to the In-Wall-HD. The key part is that all three devices are drawing their power from the 24-port PoE switch. In situations like that, you need to be especially careful about what PoE support your switch or voltage and amperage of your PoE injector. Port managed PoE switch with (1) 802.3at/bt (PoE+/PoE++) input port and (4) 802.3af (PoE) Gigabit Ethernet ports Have a small touchscreen on the left side of the device, like the UDM-Pro. This screen shows stats and info about the device, and the network it is on. They also integrate with the UniFi AR feature, which lets you use a phone to virtually see what is connected to each port. Passive 24V and 48V PoE — Ubiquiti’s standard, mostly used on EdgeMAX, AirMAX, and older UniFi devices

No UniFiOS CLI access or SCP file upload access. Can only get to BusyBox shell. (Not a huge problem, but sometimes it's handy to be able to rescue a switch at the CLI without having to do a full-on factory reset.) Deciding between UniFi, EdgeMAX, UISP, or some other brand depends on your needs. The right solution varies with what kind of network you are trying to build, and what features you need to accomplish that. If you are comfortable with command line configuration and have complex needs, another vendor is probably a better option. This guide focuses on UniFi switches, but it’s worth noting some EdgeSwitch models are the same hardware as the first generation UniFi switches, with an EdgeOS CLI and UISP instead of the UniFi controller. The newer UISP switches are not as mature, but are worth considering if you want your switch to tie into the UISP NMS and UCRM software. Managed and configured by the UniFi Controller or UniFi Mobile app, the UniFi Switch Flex offers basic Layer 2 switching protocols and features. The UniFi Controller and mobile app allow admins to configure and monitor virtually all of the switch features using a graphical user interface from anywhere. Build and expand your network with the UniFi® Switch, part of the UniFi Enterprise System. The UniFi Switch, model USW-Flex, is a configurable Layer 2 Gigabit switch with auto-sensing 802.3af PoE. It offers 5 RJ45 Gigabit Ethernet ports, providing 1 PoE input and 4 PoE output links to your devices.At the time of writing, the first thing you will need to do is to set the UniFi controller to display the old user interface as the option to enable this option is currently absent from the new interface and so cannot be selected. Please refer to our Swapping Between New & Old User Interface On UniFi Controller blog post for instructions on how to swap between old and new if you are unsure on how to do this. The USW-Flex-XG is a 2nd gen model, with one 1 Gbps and four 1/2.5/5/10 Gbps RJ45 Ethernet ports. No PoE. I’ll use the PoE, PoE+, PoE++ names as shorthand. It is important to consider the type of PoE you need for your devices, and to make sure that you have enough PoE budget on your switch to power all your devices. Otherwise, you will need to rely on separate power injectors. PoE Passthrough Most UniFi switches operate at layer 2, meaning they can handle VLANs but cannot act as a router. The 2nd generation pro and enterprise UniFi switches have some layer 3 features such as static inter-VLAN routing and DHCP, but they require a separate router or firewall for everything else. UniFi L3 switches can’t compete with a true enterprise product from a vendor like Cisco or Juniper. UniFi switches are a fraction of the price and don’t require licensing, so they compete in different markets. As with all network design and purchasing decisions, what matters most is your budget and your use case. If you want 10 Gbps ports for clients, or need a distribution switch to aggregate other switches, the XG series has a few options. Some are in the 1st generation, some are in the 2nd:

The main point I’m trying to make here is that if you expect a UniFi switch to be your only layer 3 device, you’re going to be disappointed. Adding layer 3 at the switch level usually doesn’t make sense in small to medium sized networks, and I wouldn’t recommend relying on UniFi layer 3 switches in general. If you’re working on a large multi-building network with high requirements, UniFi may not be the best fit. I’ll cover this in more detail if I ever get around to finishing my USW-Enterprise-8-PoE review. The USW-EnterpriseXG-24 is a 2nd gen model, with twenty-four 1/2.5/5/10 Gbps RJ45 and two 25 Gbps SFP28 interfaces. No PoE.

Do not have a serial console port. All management has to be done over Ethernet in-band. (EdgeSwitches still have console ports!) NOTE: For outdoor installations, please install the Port Cover prior to connecting your Ethernet cables. See Outdoor Installation. A common complaint with the first generation models are their loud fans. It is possible to replace them with quieter Noctua fans, or you can throw it in a network closet and forget about it. If you just need basic L2 switching and PoE, the first generation models are still worth considering, especially if budget and availability are more important than future software support. USW-Flex — When using PoE passthrough ( Note: this was upgraded to 802.3at PoE+ in a firmware update)

It’s also worth pointing out that PoE devices don’t always consume their maximum rated power draw. The spec sheet will specify the maximum amount the device can use, but during normal operation they won’t use that much. For example, the U6-Pro requires 802.at PoE+ or 48V passive, and maxes out at 13W. During normal use it usually consumes around 5 to 7 watts of power.EdgeSwitches have an optional web interface overlay called UISP, which is similar to the UniFi controller. UISP is limited when it comes to EdgeSwitch configuration, and it doesn’t have every option that the device’s individual web GUI or CLI has. Think of UISP as an easy way to monitor all of your AirMAX, LTU and EdgeMAX devices, rather than a single interface for configuring everything like the UniFi controller. Ubiquiti calls them “Gen2” but I am going to call them 2nd generation. Whatever you call them, Ubiquiti’s newer UniFi switches split things into a few tiers. There are models which replace the 1st generation switches, and the higher pro and enterprise tiers. I just finished an evaluation of the UniFi Switch Flex (PoE in & out) and Flex Mini (PoE in only). They're both great little 5-port switches for what they are, but there are a few feature limitations to be aware of. The first 2 limitations are non-negotiables in my use cases: EdgeSwitches are more flexible and capable, and are a better fit for network operators, WISPs, managed service providers, and other more advanced networks. If you need features like link aggregation, TACACS+, RADIUS, 802.1X, MAC filtering, ACLs, or static routing, you’re better off with an EdgeSwitch than a UniFi switch. UniFi switches support many of these features, but are often less configurable, poorly documented, and less reliable.

Also worth noting — if serial console out-of-band management port is something you need, the first generation switches have it, and the second generation models do not. XG UniFi Switches The UbiquitiUniFi Switch USW-FLEXis a configurable Layer 2 Gigabit switch with auto-sensing 802.3af PoE. It offers five RJ45 Gigabit Ethernet ports, providing 1 PoE input and 4 PoE output links to your devices.The US-XG-6-PoE has four 1/2.5/5/10 Gbps RJ45 Ethernet ports with PoE++. It also has two 10 Gbps SFP+ interfaces.