Assigning Values to the ATM CLP Bit

The mark-clp command assigns a value of 0 or 1 to the ATM CLP bit for packets conforming to the current classifier control list.

Modules on E Series routers support classifying and marking of the ATM CLP bit according to the following rules:

• Modules on E120 and E320 routers support classifying of the ATM CLP bit only for frame-based interfaces (ATM Adaptation Layer 5 [AAL5] encapsulation), but not for individual ATM cells (ATM Adaptation Layer 0 [AAL0] encapsulation). In this case, if the CLP bit in any cell in the frame has a value of 1, the router treats the reassembled AAL5 frame as if it also had a CLP value of 1.
• Modules on E120 and E320 routers support marking of the ATM CLP bit on frame-based interfaces. In this case, every cell of the segmented frame leaves the router with the same CLP value.
• Modules on ERX7xx models, ERX14xx models, and the ERX310 Broadband Services Router support classifying and marking of the ATM CLP bit for individual ATM cells (AAL0 encapsulation), but not for frame-based interfaces (AAL5 encapsulation).