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Spirent KB Article
Doc ID: FAQ10318
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Avalanche: What ports are used to communicate between the Avalanche Commander and the Spirent TestCenter chassis?
Spirent TestCenter chassis
Card allocation/reservation: TCP port 3629.
Configuration push, statistics, content upload, connections: TCP ports 3642, 3658, 3666, and 3670.
TestCenter command/response communications: port 40004 for the chassis and 49152-53248 (0xc000 - 0xd000) for both TCP and UDP. For Telnet: standard port 23.
In the future, the NAT base port number will be configurable, though it will still default to 49152.
Product : Avalanche,Spirent TestCenter