Recommendations for fragmented traffic and LACP configuration on Blue Coat X series platform
Packet loss or latency is observed when a LACP is configured across multiple NPM's in the X-series.
Analysis of the problem:
How to address this issue:
An extract of the IEEE 802.3 standard that proves the nonconformance to the IEEE standard is listed next.
43.2.4 Frame Distributor
The above requirement to maintain frame ordering is met by ensuring that all frames that compose a given conversation are transmitted on a single link in the order that they are generated by the MAC Client; hence, this requirement does not involve the addition (or modification) of any information to the MAC frame, nor any buffering or processing on the part of the corresponding Frame Collector in order to reorder frames.
This approach to the operation of the distribution function permits a wide variety of distribution and load balancing algorithms to be used, while also ensuring interoperability between devices that adopt differing algorithms.