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What is netgear switch mac address prefix mac#

The NETGEAR ProSAFE GS108 unmanaged switch lets you expand your network to gigabit speeds and/or higher port counts.

if the uplink is ethernet, then it is a router. They're aren't fancy, but they ROUTE packets.įor lack of a Better term, a Bridge is a low Density Switch, although I've heard the term used to describe a True gateway meaning a device that allows two different types of networks to talk to each other.įor example, the Cable Modem industry typically refers to a Cable Modem as a Bridging device.Ī Home gateway is NOT really a gateway unless it has the cable or DSL or ISDN built into the box. Incidently, Home Gateways are Routers in every sense of the term. The fact that some marketing departments got a little term happy doesn't change that. Routers and Switches should be completely different things. (usually a High Density Router) 3Com invented the term, because they felt that in terms of marketing, Router=Cisco, Switch=3Com and they hated Cisco and WERE the number 2 company and wanted to sell more routers.

What is netgear switch mac address prefix mac#

It needs a Mac address and at least 1 IP address. ALL, managed switches MUST have a MAC address. If any of that is wrong, I blame it on the cheap beer I had tonight.Ī switch is a Layer 2 device, therefore it sees and Talks mac, it does no need it's own MAC address. Sorry if that was verbose, but I just gradiated, and got an A in my networking class, so I thought I might regurgitate something that I learned. Layer 1 Physical Manchester Bit None (either directly connected, or Multiple Access) Layer 4 Transport TCP/UDP Segment/Datagram IP:Port Layer 5 Application Teh App Message Socket It is important to note, if you actually give a shit about networking, that all network devices have their place. As was already said, swithches do not have MAC addresses, at least on the switching ports, because they do not consume the frames, they merely forward them out on the correct port, or drop them. Only network interfaces which actually receive and consume frames require a MAC address. So I guess they are technically Mostly Unique, as in Mostly Harmless. This means that it is very unlikely that you will ever see two of the same MAC addresses on a network, or even two of the same in your life, but it is a possibility. Though the products are usually separated chronologically by quite some time as well as by the geographic location in which they are intended for sale. Actually, manufacturers reuse MAC addresses. There is a common misconception that MAC addresses are globally unique. If an Ethernet device is to be a receiving endpoint for packets, it has to have a globally unique MAC address. That's different from a switch, which doesn't actually receive and process the packets as an endpoint. It has to actually receive the data, which is addressed to *it* on Layer 2, (not always on Layer 3) and retransmit it on the destination interface.

It's important to remember that the MAC address of a switch is actually the MAC address of that switch's internal management system.Įach interface of a router needs its own MAC address, because each interface is an endpoint for traffic. That agent is built into the switch, so the switch has a MAC address. On the other hand, the management agent in a managed switch *can* receive packets itself. Therefore, a hub or unmanaged switch, which can't receive packets itself (only pass them along), doesn't have a MAC address.

If the packets pass *through* the switch, they're not ending there. Then, management traffic is addressed to the switch itself. A switch isn't an endpoint unless the traffic is directed to the switch itself, which only happens when the switch is managed.