发明名称 |
Packet relaying apparatus and high speed multicast system |
摘要 |
In a high speed multicast route searching method of searching information of a transmission port to which a received multicast packet is next transferred: a route address is formed by coupling a receiver address and a sender address in this order; one p-th power-of-2-branch tree node is configured by a collection of one two-branch tree node and two-branch tree nodes of p-1 stages totalling ((p-th power of 2)-1) nodes just under the one two-branch tree node to form a p-th power-of-2-branch tree which is stored in a memory; not one bit but consecutive p bits of the route address coupling the receiver address and sender address in a received multicast packet in this order are checked at the same time; and in accordance with the values of the consecutive bits, a search tree stored in the memory is searched. In this manner, a search process can be completed by tracing nodes (the number of bits of a search key divided by p) times at a maximum, independently from the number of entries.
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申请公布号 |
US6778532(B1) |
申请公布日期 |
2004.08.17 |
申请号 |
US19990389301 |
申请日期 |
1999.09.02 |
申请人 |
HITACHI, LTD.;HITACHI INFORMATION TECHNOLOGY CO., LTD. |
发明人 |
AKAHANE SHINICHI;SUGAI KAZUO;AIMOTO TAKESHI;MATSUYAMA NOBUHITO;SAKO YOSHIHITO;SEKINO HIROSHI |
分类号 |
G06F13/00;H04L12/18;H04L12/46;H04L12/56;H04L13/08;(IPC1-7):H04J1/10 |
主分类号 |
G06F13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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