Link Services Exceptions on J-series Services Routers

The link and multilink services implementation on a J-series Services Router is similar to the implementation on the M-series and T-series routing platforms, with the following exceptions:

• A Services Router supports link and multilink services on the ls-0/0/0 interface instead of the ml-fpc/pic/port, lsq-fpc/pic/port, and ls-fpc/pic/port interfaces.
• When LFI is enabled on a Services Router, Queue 2 is reserved for voice traffic, while all other queues perform fragmentation. Also, the queuing behavior on the link services interface and constituent links is different. For more information, see Queuing with LFI on J-series Services Routers.
• When LFI is enabled on a Services Router, fragmented packets are queued in a round-robin fashion on the constituent links to enable per-packet and per-fragment load balancing. For more information, see Queuing with LFI on J-series Services Routers.
• A Services Router supports per-unit scheduling on all types of constituent links (on all types of interfaces).
• A Services Router supports Compressed Real-Time Transport Protocol (CRTP) with MLPPP as well as PPP.
• A Services Router does not support multiclass MLPPP.
• A Services Router does not have the ability to apply fragmentation maps to specific queues to enable LFI on specific queues (a multiclass MLPPP feature).