Hi! Pure theoretical question, although I think the specialists which can contribute to the answer are right here on this list (it's not in any FAQ I read though): How can I measure the size of the network buffer of a network component at the downstream endpoint? In other words: How can I obtain the buffer size of my DSLAM just from information gathered at my linux box ? It should be possible since TCP fills the buffer until packets are dropped. From the time a packet is lost to the time of it's retransmission it should be possible to figure out the buffer size, but I don't really know how to do this in a precise and correct way. Thanks in advance for any info, pointers, remarks, Walter -- Fraunhofer-Einrichtung Systeme der Kommunikationstechnik Walter Zimmer Hansastraße 32 Dipl.-Inf. D-80686 München Telefon: +49(0)89-547088-344 E-Mail: walter.zimmer@esk.fhg.de Telefax: +49(0)89-547088-225 - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org