North American Network Operators Group|
Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical
MAE West congested again?
It looks to me as if MAE West may be congesting again. While things look fine at the moment, earlier I was seeing congestion when transitting between CERFNET (22.214.171.124) and ESNET (126.96.36.199). My understanding of the topology of MAE West is that there is a Gigaswitch at Ames and a Gigaswitch at MFS (in San Jose) connected by a pair of OC-3 ATM circuits. My belief is that CERFNET and ESNET have ports on different Gigaswitches. MFS has changed the web page which lists MAE West connections such that I am unable to easily tell who is on which switch. In looking back at stats for the OC-3 link prior to the addition of the second circuit, I note the circuit maxes out around 70 Mbits/sec. In discussing this around here, we concluded that data is probably clocked out the Gigaswitch at 100 Mbits/sec and ATM overhead accounts for the remaining loss of available bandwidth. Can anyone confirm this for me? The graph for the OC-3 pair from yesterday indicates that it's time to add more bandwidth between switches. I'm real interested in knowing what plans MFS has up its sleeves for alleviating congestion this time around. Provisioning an OC-3 and only burning half the available bandwidth doesn't strike me as a scalable solution. mb - - - - - - - - - - - - - - - - -