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Game - Name a Layer2 protcol
- Thread starter spidey07
- Start date
PPPoE - Point to Point Protocol over Ethernet. Establishes a virtual point to point connection between a DSL line and a broadband aggregation router. You're probably all using this at home now (if you have DSL).
The oE part has nothing to do with your modem's ethernet port, rather it has to do with the aggregation router and the DSL aggregator.
PPPoE largely takes over from PPPoA, as the carriers move from ATM aggregation equipment to the simpler Ethernet gear.
The oE part has nothing to do with your modem's ethernet port, rather it has to do with the aggregation router and the DSL aggregator.
PPPoE largely takes over from PPPoA, as the carriers move from ATM aggregation equipment to the simpler Ethernet gear.
One of the most important if there ever was one.
Although I don't know if it classifies as a pure layer2 protocol. I'm pretty sure it's a layer3 one.Although you forgot a brief description!
Frame Relay - Basic L2 protocol to identify and specify virtual circuits. Nothing more than an L2 marking as well as rudimentary flow control at L2.
Agreed.
That's a L2 protocol (If you can call it that) if there ever was one.
It's got L2 addressing, it frames (err, cells it) it, I call it L2.
But for this game you need to provide a brief description of it's function. 😉
Coming up with true L2 protocols can be difficult.....short on time....
CGMP - cisco proprietary messaging used to communicate multicast group membership to non IGMP aware L2 switches.
I'm surprised nobody has gone over the gauntlet of WAN protocols.
spidey07, sorry, I missed that part. ATM is a jobs creation program for circuit-switched people.
It's also a way to create statistically-multiplexed virtual circuits on one physical link. See Frame Relay and MPLS.
As my penance, how about: SONET - a TDM ring-topology network, known for its very fast ring wrap times if properly implemented. In the data world, ATM and PPP are both examples of higher-level L2s carried over SONET. Typically SONET is carried over STM (OCx) or STS links.
It's also a way to create statistically-multiplexed virtual circuits on one physical link. See Frame Relay and MPLS.
As my penance, how about: SONET - a TDM ring-topology network, known for its very fast ring wrap times if properly implemented. In the data world, ATM and PPP are both examples of higher-level L2s carried over SONET. Typically SONET is carried over STM (OCx) or STS links.
spyordie007
Diamond Member
Ethernet, ATM and ISDN all reach up through Layer-2.
If it's defined in terms "higher up" than 1s and 0s it's probably not limited to Layer 1 😉
That being the case I'm really surprised Ethernet hasn't been mentioned yet. Yes I know it exists at Layers 1 and 2, but a frame fits the bill right?
Although 802.1x itself is Layer-2 I'd be careful grouping it with other Layer-2 protocols since the majority of 802.1x deployments are dependent on upper-layer protocols (i.e. RADIUS).
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