we're now going to look at how we select edge switches so in addition to all the previous features we talked about you need to remember that a layer 2 device is only for connecting end users vendors would love to sell your highly specified layer 2 device that can do a lot of layer 3 features and other very fancy capabilities as well but your 8 switch is really only for connecting end users and nothing more so look for switches that have 24 or 48 copper ports 10 meg 100 meg 1000 megabits per second are the very common switch ports that are sold today you could opt for some power over ethernet ports if you want to especially if there's a requirement to connect wireless access points and or ip phones it's really needed to buy a 48 port power over ethernet switch because then user devices such as laptops and pcs don't need power over ethernet so specify the power over ethernet needs according to what the campus requires for uplinks either two one gigabit ports or two 10 gigabit ports are sufficient they could be copper they're more likely to be fiber in fact a lot of switches recently the ports can be dual personality depending on which sfp is plugged in these head switches only connect to the building distribution switch so copper at a gigabit per second may well be enough you could bond these two ports together to give you two gigabits per second if need be but if you install fiber this allows future growth to 10 gigabits per second from edge to the distribution simply by swapping an sfp for an sfp plus to give you that 10 gigabits capacity the slide shows you some examples of low-cost edge switches that we've had good experience with netgear has some smart managed pro switches and note carefully these are pro switches confusingly netgear also sells you smart managed plus these are not as manageable as the pro switches as they're only a web interface and don't have snmp so for example the gs748 and the 752 have 48 10 100 000 ports they can give you power over ethernet options if you need they have four one gigabit sfp for uplinks and of course they can have 24-port versions if you only need those the gs110 tp which is the bottom graphic on the slide has eight 10 100 000 ports they're all power over ethernet and it's got two one gigabit sfp ports for uplink if you need those you've got full snmp access the management is only via http unfortunately there's no https support and for remote access it is telnet there is no ssh support and there's no serial console either but they support 802.1x they support dhcp snooping and dynamic arp inspection nice shallow form factor and they're very good for wall mount cabinets in the campus another low-cost age switch could be the dell emc and 1524 and 1548. again 24 port and 48 port respectively supporting 10 100 000 speeds they have four 10 gig sfp plus uplinks and the ones with the p suffix in the name support power over ethernet as well the cli is very cisco like it has a gui and it has the serial console port as well for last resort access and unlike the netgear they support secure shell and https access they support the dhcp snooping and dynamic arc inspection and so on as we recommended earlier for the more mainstream higher cost switches we've used examples from cisco here's the cisco catalyst 2960l and 2960x they support 24 or 48 10 100 000 ports they've got a multitude of power over ethernet options if you need those and uplinks can either be for one gig or two 10 gigs depending on which model you buy and even some of them are stackable so if you run out of the 48 ports for the edge you can just stack two together and create a 96 port switch if you need to do that.
© Produced by Philip Smith and the Network Startup Resource Center, through the University of Oregon.
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