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S. Floyd and V. Jacobson, "The Synchronisation of Periodic Routing Messages", ACM Transactions on Networking, Vol. 2, No. 2 (April 1994), pp. 122 - 136.

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An Examination of MBone Performance - Mark Handley Ucl (1997)   (64 citations)  (Correct)

.... Autocorrelation of Loss, Tues 16 9 96, 07:37 10:32 BST Figure 8: Autocorrelation of Packet Loss cobson has attributed similar effects to a bug in certain routers, where they invalidate their interface routing cache while processing routing updates, and to synchronisation of routing updates [9]. Although these seem likely there is not enough data in these RTP or RTCP figures to verify either hypothesis. Both local tests and the absence of such effects for significant numbers of receivers tend to imply that this is not likely to be a ubiquitous artifact of DVMRP routing itself in the ....

S. Floyd and V. Jacobson, "The Synchronisation of Periodic Routing Messages", ACM Transactions on Networking, Vol. 2, No. 2 (April 1994), pp. 122 - 136.


Explicit Network Scheduling - Black (1994)   (23 citations)  (Correct)

....it simply cannot be applied. Furthermore in a general purpose operating system it is impossible to reconcile the claims of different competing user processes. Even 15 in a single user, single purpose system the strict use of priority is not always helpful. 3.1. 1 Priority in the Internet In [Jacobson93] Jacobson reports on the effect of routers prioritising the processing of routeing updates over forwarding duties on the internet. The observation is that the probability of packet loss during this (periodic) processing is much higher. It is important that a very high packet arrival rate does not ....

....is much higher. It is important that a very high packet arrival rate does not delay the processing of routeing updates indefinitely. To avoid this, routers give the processing of routeing updates priority over data packet processing. The resultant gap in processing has been measured at over 300ms [Jacobson93] for a single router. The effect on a multimedia stream is made worse by the synchronisation of routeing updates which causes multiple routers to cease processing at the same time. This effect is particularly severe on audio streams as regular drop outs are very perceptible to the human ear. ....

V. Jacobson. The Synchronisation of Periodic Routing Messages. In Computer Communication Review. ACM SIGCOMM, September 1993. (p 16)

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