This presentation provided by Bob Klessig of 3COM Corporation.
bob_klessig@3mail.3com.com
. Basic Concepts
. Feature Descriptions
. Economics
. ATM
* Device conforming to IEEE Std. 802.6 - 1990 can attach to the Service
Interface and access SMDS
* For single CPE configurations, only a subset of IEEE Std. 802.6 - 1990 is
required
* No distance limitation
* See RFC 1209
* Address Fields
- 4 bit type field followed by 60 bits of address
- Address up to 15 BCD digits (60 bits)
- E.164 (telephone number)
* Destination Address types
- Individual or Group (multicast) address
* Source Address type
- Individual only
- Up to 16 individual addresses can be assigned to a service interface
* No connection establishment required to start exchanging data
* Packet delivered unchanged
* Group membership not required to send to group
* Group address delivered to destinations
* Source Address must be one assigned to service interface
* Prevents spoofing
* Usage charging integrity
* B is a "private" address
- A, B, D, and E form a logical private network
* H is a public "address"
* Defined by a credit manager
* Packets that exceed available credit are discarded
- Predicable behavior
- Access class violations can be monitored by Customer Network Management
* Resulting network economies will be shared with the customer
* SMDS is designed to work with existing LAN interconnection architectures
* Features are designed to exploit public switched capability
* Customer Network Management is based on SNMP
* SMDS provides public switched economics
* SMDS will transition smoothly to ATM/BISDN