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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: questions about fcip> -----Original Message----- > From: Chong Peng [mailto:ChongPeng@MaXXan.com] > Sent: Sunday, August 04, 2002 4:02 PM > To: ips@ece.cmu.edu > Subject: questions about fcip > > > FCIP gurus: > > The FCIP protocol allows one FCIP link have multiple TCP > connection. I have two questions about this: > > 1. Why would a FCIP link need multiple TCP connections? This allows implementations to avoid head of queue blocking of high priority transmissions, including the control functions. Examples include allowing separation of class F (control services), class 2, and class 3 Fibre Channel data transfer services. Not all devices may choose to use multiple TCP connections. > 2. If there are multiple TCP connections in a FCIP link, > which entity is responsible for distributing traffic among them. This is defined in the FC-BB-2 document managed by the T11 committee. Basically, the responsibility for implementing a device is divided between Fibre Channel activities (implemented by the FC Entity) and FCIP activities (implemented by the FCIP Entity). The FCIP Entity provides the multiple TCP connections and the FC Entity chooses which ones receive which types of data. It also chooses how many are required for a particular link and establishes only that number. Hope that is some help. Robert Snively Brocade Communications Systems, Inc. 1745 Technology Drive San Jose, CA 95110 E-Mail: rsnively@brocade.com Phone: (408) 487-8135 Fax: (408) 392-6655
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