Alcatel-Lucent 7750 SR OS Interface Configuration Manual page 48

Ports
and reconstructs the desired unbundled flow through processing of the received sequence numbers
and B&E bits. For a detailed description of the algorithm refer to RFC 1990.
Information Field
The Information field is zero or more octets. The Information field contains the datagram for the
protocol specified in the protocol field.
The MRRU will have the same default value as the MTU for PPP. The MRRU is always
negotiated during LCP.
Padding
On transmission, the Information field of the ending fragment may be padded with an arbitrary
number of octets up to the MRRU. It is the responsibility of each protocol to distinguish padding
octets from real information. Padding must not be added to any but the last fragment (i.e., the E-bit
set true).
FCS
The FCS field of each MP packet is inherited from the normal framing mechanism from the
member link on which the packet is transmitted. There is no separate FCS applied to the
reconstituted packet as a whole if transmitted in more than one fragment.
Page 48 7750 SR OS Interface Configuration Guide