[e2e] Reordering in routers

Mohacsi Janos mohacsi at niif.hu
Sat Aug 9 01:33:53 PDT 2003

On Fri, 8 Aug 2003, Ghanwani, Anoop wrote:

> As far as I know, under normal circumstances most routers do not
> reorder packets.  I think Juniper routers had a problem with reordering,

This reordering in Juniper router could happen in very rare circumstances.
The cause of reordering was the massive parallel processing done by IP II
in Juniper router. The incoming packets dsitributed along the number of IP
IIs, and might forwarded in different order (less then 0.5 % of packets).
After discovering this problem Juniper fixed it (a year ago).

Janos Mohacsi
Network Engineer, Research Associate
Key 00F9AF98: 8645 1312 D249 471B DBAE  21A2 9F52 0D1F 00F9 AF98

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