The external overhead results from the data that the modem attaches to each packet. For PPPoE connections, this is 4 bytes for the LLC header and 8 bytes for the AAL 5 trailer. The modem cannot send "partial" ATM cells, so on average half an ATM cell (= 24 bytes) must be allowed for additionally. The resulting total overhead is thus 36 bytes per transmitted packet.
- SNMP ID:
- 2.23.4.17
- Console path:
- Setup > Interfaces > DSL
- Possible values:
Max. 3 characters from [0-9]
- Default:
- empty
