Configuring Ports
Page 210 7750 SR OS Interface Configuration Guide
Multi-Class MLPPP
The following guidelines apply to multi-class MLPPP:
• MC-MLPPP must be configured before links are added to a bundle.
• MC-MLPPP and LFI (config>port>multilink-bundle>interleave-fragments) are
mutually exclusive.
• MC-MLPPP is not supported when port is configured as network mode.
• MC-MLPPP can be enabled on every MLPPP bundle and bundle protection group.
• MC-MLPPP is supported only on ASAP MDAs (for example, m4-choc3-as-sfp, m1-
choc12-as-sfp, m4-chds3-as, m12-chds3-as).
• Short and long sequence packet formats are supported (both ends must be of the same
type) with static mapping of forwarding classes to MC-MLPPP class (based on the
number of classes negotiated with the far end).
• Single fragment size for all classes is supported.
• Prefix elision is not supported. The prefix elision (
compressing common header bytes)
option advises the peer that, in each of the given classes, the implementation expects to
receive only packets with a certain prefix; this prefix is not to be sent as part of the
information in the fragment(s) of this class.
• Fractional DS1 MLPPP links are supported. This is applicableto MLPPP bundles on
ASAP MDAs.
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