IC697CHS783

IC697CHS783

和快速的查找算法。

　　在實現當中，我們選用采用索引查詢的散列表來作為存儲NAT映射表項的數據結構。使用協議類型值、內部網絡地址和端口來計算散列值，并結合映射表項的標志來確定需要做地址翻譯的IP數據包。

　　如果當前的IP數據包是外出的IP數據包，但是沒有匹配到一個合適的映射表項，那么NAT將建立一個新的映射表項，添加到散列表中。

　　如果當前的IP數據包是來自于外部網絡的，要么能夠匹配到一項合適的映射表項，要么目的端口已經被配置為端口轉發（在這種情況下，NAT將依據端口轉發配置，在NAT映射表中靜態添加一個入口），否則，將不會改變這個IP數據包。

　　為了避免已經出現異常的連接繼續占用系統資源，在每個映射表項的定時器超時后，其回掉函數將刪除存儲在散列表中的對應的NAT映射表項。

IC697CHS783◆ 聯系人： 陳女士）
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IC697CHS783ADC Telecommunications - VMM-9B9B9B1CD000 VMM Type D

Newbridge / Alcatel HUB Card P/N 90-6085-01

Alcatel / NewBridge Module 90-4724-01 /K

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Crestron MP2E Professional Media Processor

NEC NEAX 2400 IMS PA-16ELCJ-B Circuit Card

ADC FDF-STDVAM VAM Chassis w/ VMM-9B9B9B1ED000 Splitter

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JUNIPER M5 Router case with power supply only 

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Square D NQOD424L100CU Panelboard

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IBM 97P2241 8GB 567MHz Memory Book

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SUN 540-5605-04 CPU 4x1200Mhz 8G Mem

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Wohler AMP2A-2S Analog Audio Monitor Panel

IBM PCI-X 266 DDR Dual Channel Ultra320 SCSI PN 42R4860

Nortel Passport Control Processor CP NTNN01AA 

Yamaha Mixing Console GF12/12

Force10 E600 Cable Management Kit CC-E600-CMK-V-R

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IBM 1.2 V regulator card P/N: 44P3193

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