Cable Modem Termination System–Network Side Interface
SP-CMTS-NSII01-960702
iii
Contents
1. Scope and Purpose......................................................................................................1
2. Definitions.....................................................................................................................3
3. Functional Reference Model .......................................................................................5
4. Communications Specifications.................................................................................6
4.1 IP Over ATM................................................................................................................7
4.1.1 Network Layer....................................................................................................7
4.1.2 ATM Adaptation Layer ......................................................................................7
4.1.3 ATM Layer.........................................................................................................7
4.1.4 Physical Layer ....................................................................................................7
4.1.4.1 STS-3c.............................................................................................................7
4.1.4.2 DS3..................................................................................................................7
4.2 IP Over FDDI ..............................................................................................................7
4.2.1 Network Layer....................................................................................................8
4.2.2 Data Link Layer..................................................................................................8
4.2.3 Physical Layer ....................................................................................................8
4.3 IP Over IEEE 802........................................................................................................9
4.3.1 Network Layer....................................................................................................9
4.3.1.1 Address Resolution..........................................................................................9
4.3.2 Data Link Layer..................................................................................................9
4.3.2.1 802.2 LLC........................................................................................................9
4.3.2.2 802.3 MAC......................................................................................................9
4.3.2.3 Bridging...........................................................................................................9
4.3.3 Physical Layer ....................................................................................................9
4.3.3.1 10BASE-T .....................................................................................................10
4.3.3.2 100BASE-T ...................................................................................................10
4.4 IP Over Ethernet........................................................................................................10
4.4.1 Network Layer..................................................................................................10
4.4.1.1 Address Resolution........................................................................................10
4.4.2 Data Link Layer................................................................................................10
4.4.2.1 Address Length..............................................................................................10
4.4.2.2 Bridging.........................................................................................................11
4.4.3 Physical Layer ..................................................................................................11
4.4.3.1 10BASE-T .....................................................................................................11
4.4.3.2 100BASE-T ...................................................................................................11
5. References..................................................................................................................12