The GS510TP has multiple Quality of Service (QoS) options. Ingress and Egress rate limits can be applied in 64 kbps increments from 16 to 16384. If you do the math, setting the rate limit at 16 is essentially a 1 Mbps limit. (16 x 64kbps = 1024kbps = ~ 1Mbps) As with the GS110TP, the lowest limit remains 1 Mbps.
I ran a simple download test from an Internet site and measured my download speed through one of the GS510TP's ports at 12 Mbps. I then applied an ingress and egress rate limit of 16 to the switch port my PC was connected (port 4, see below) and re-ran the download test. My download speed was throttled to .98Mbps, closely matching the GS510TP's 1 Mbps rate limit.
Ingress / Egress rate set
Additional QoS options include trusting CoS or DSCP values on packets and then mapping the CoS or DSCP values to one of four queues. Alternatively, the switch can be set globally or per port to untrusted mode with traffic queues applied per port. The four queues available are numbered 0-3, with queue 0 being “best effort” and queue 3 being high priority, intended for voice or video traffic.
The GS510TP also provides Differentiated Services (DiffServ) QoS options. Configuring DiffServ involves classifying incoming packets based on layer 2, 3 or 4 criteria, creating a policy on how to handle those packets (assign a queue, apply a rate limit, etc..), and then applying the policy to one or more interfaces. Diffserv configurations can be complex, but provide a means for controlling specific types of traffic. The GS510TP manual provides a decent DiffServ configuration example.
Traffic security options on the GS510TP include filtering for rogue DHCP servers, blocking six different known types of Denial of Service (DoS) attacks and applying storm control thresholds to limit broadcasts on the switch.
End user security options include 802.1x authentication with support for both RADIUS and TACACS+, filtering traffic based on MAC addresses, defining which MAC addresses are permitted per port, as well as isolating traffic from specific ports to others.
Further, traffic flows can be filtered with the creation of Access Control Lists (ACLs) that can match and control traffic based on source and destination MAC and/or IP addresses as well as Layer 4 Ports. Finally, management access to the switch can be configured for HTTPS and limited to specific source IP addresses or subnets.
The GS510TP supports up to 30W per port with a total power budget of 130W on the switch. All eight copper Ethernet ports support PoE and are 802.3af and 802.3at compliant. I connected a couple of PoE powered access points, as well as a PoE powered network monitoring appliance to the GS510TP. The three devices drew a total of 17.7W as shown in the summary page below.
Power can be controlled on the GS510TP in basically the same manner as the previously reviewed GS110TP with options to apply per-port power limits, as well as creating a schedule to turn power on and off to the PoE ports.
The GS510TP and GS110T also offer two general power saving features, referred to as Green Ethernet features. Sleep mode, when enabled, puts inactive ports in a down state, reducing the frequency they check for link activity and thus reducing overall power consumption. The ports will still come up when a cable is connected, they'll just use less power when nothing is connected.
The second Green Ethernet feature on the GS510TP is short cable mode. When enabled, ports with less than 10m cables attached are placed in low power mode.
Comparisons, Pricing and Conclusion
In my introduction, I mentioned the GS510TP and GS110T are very similar switches, with the main difference between the two being the GS510TP supports PoE. These two switches even share the same manual.
It is useful to compare the newer GS510TP and GS110T with a pair of NETGEAR's older switches, the GS108T (more specifically, the GS108T-200) and the GS110TP. These two older switches share the same features and also have their own common manual. The two main differences between the GS108T and GS110TP are the GS110TP supports PoE and has 2 SFP ports. The GS108T has neither.
I've included the Cisco SG200-08P and SG200-08 for comparisons in Table 2. Both are eight port Gigabit Ethernet Layer 2 smart switches, with the “P” indicating PoE. Neither have SFP ports. For more details on Cisco switch models, check out the beginning of my review of the SG500-28P. All prices below are taken from Pricegrabber.com.
|Model||Switching (Gbps)||MAC Table||VLANs||PoE||PoE Budget||Cooling Fan||SFP Ports||Price|
Table 2: Product comparison
*(The SG200-08P supports PoE on only four ports.)
You can see from the above table that the differences between the two newer models of NETGEAR switches and the two older models of NETGEAR switches are basically power and price. The two Cisco switches are rated at a lower switching capacity, have a lower PoE budget and are priced between the newer and older NETGEAR switches.
I've had better luck with small port density NETGEAR switches than I've had with small port density Linksys (now Cisco) switches. I've had good success with a GS108T that I've been using in my lab for several years. While writing this review, I found the GS510TP easy to configure, stable, and a solid performing switch and I expect it will be just as reliable as the GS108T. And of course, the NETGEAR ProSafe lifetime warranty is a big plus!
Interestingly, it seems the NETGEAR GS510TP's biggest competition in small port density PoE switches is with older NETGEAR models. For an eight port smart switch with PoE, unless you need the 130W of power, it's hard to justify the $175 price jump for the GS510TP over the older GS110TP.