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    • 22. 发明申请
    • METHOD AND APPARATUS FOR REDUCING POOL STARVATION IN A SHARED MEMORY SWITCH
    • 用于减少共享存储器开关中的池起动的方法和装置
    • US20110286455A1
    • 2011-11-24
    • US13204145
    • 2011-08-05
    • David A. Brown
    • David A. Brown
    • H04L12/56
    • H04L47/30H04L47/70H04L49/103H04L49/201H04L49/252H04L49/9047
    • A switch includes a reserved pool of buffers in a shared memory. The reserved pool of buffers is reserved for exclusive use by an egress port. The switch includes pool select logic which selects a free buffer from the reserved pool for storing data received from an ingress port to be forwarded to the egress port. The shared memory also includes a shared pool of buffers. The shared pool of buffers is shared by a plurality of egress ports. The pool select logic selects a free buffer in the shared pool upon detecting no free buffer in the reserved pool. The shared memory may also include a multicast pool of buffers. The multicast pool of buffers is shared by a plurality of egress ports. The pool select logic selects a free buffer in the multicast pool upon detecting an IP Multicast data packet received from an ingress port.
    • 交换机在共享存储器中包括一个保留的缓冲区池。 保留的缓冲池被保留供出口端口独占使用。 该交换机包括池选择逻辑,其从保留池中选择一个空闲缓冲区,用于存储从入口端口接收的数据以转发到出口端口。 共享内存还包括一个共享缓冲池。 共享缓冲区池由多个出口端口共享。 池选择逻辑在检测到预留池中没有可用缓冲区时,会选择共享池中的空闲缓冲区。 共享存储器也可以包括缓冲器的多播池。 缓冲区的组播池由多个出口端口共享。 池选择逻辑在检测到从入口端口接收到的IP组播数据包时,选择多播池中的空闲缓冲区。