【正文】 (IP)13. Far End Interface Type (T1 D4)14. Payload Type (Data)15. Switches Sanity check (Discard)16. Clock Recovery (Disable)17. Differential Time [Usec][1 512000] ... (5000)18. Max Buffer Size [Usec][0 512000] ... (0)19. Number Of Frames[1 1500] ... (80)20. Reordering (YES)21. L Bit amp。 OOS (OOS Mode Conditioning)22. Redundant (Disable)23. RTP Mode (Disable)24. Connect/Disconnect (Connect)25. Next Hop Type (IP)26. Enable JB Reset (On N Times)27. Window Size[2 127] ... (10)Main MenuBundle Assignment 1. Link Number [1 8] ... (1) 2. Bundle ID[0 4095] ... (1) 3. TS Route Type (Coupled) 4. Timeslot Assignment [124] ... (1) 5. TS width (8 Bits)下面是TDMoP從設(shè)備在T1成幀模式下采用CESoP仿真的典型配置。該TDMoP從設(shè)備完成時(shí)鐘恢復(fù)功能。 TOP (T1)Main MenuGeneral Configuration 1. Source Mac address ... (0020D224A346) 2. Source IP 1 ... () 3. Source IP 2 ... () 4. IP Mask ... () 5. Default Gateway ... () 6. Max HDLC Frame Size[1 1800] ... (1800) 7. ARP wrong IP (CPU) 8. Wrong IP (Discard) 9. Not Eth Type (CPU)10. ARP my IP (CPU)11. Not UDP type (CPU)12. Not TDMoIP type (CPU)13. Bundle number does not exist (Discard)14. OAM packet (CPU)15. Auto Negotiation (YES)16. Rate amp。 Duplex (100M_FDX)17. DefaultMain MenuInterface ConfigurationT1 Screen Configuration Link Number[1 8] ... (1) 1. Frame Type (SF) 2. RX Config Gain Limit (SHORT Haul) 3. OOS Code type (OOS Code) 4. Data TX/RX OOS[0 ff] ... (7E) 5. Idle Code[0 ff] ... (7E) 6. TX/RX Signal Mark code[0 3] ... (F) 7. TX/RX Signal Space code[0 3] ... (1) 8. TX/RX OOS Signal MASK (Space) 9. Clock Source (Recovery)10. DSU / CSU (DSU)11. DSU Mask (0133 feet)12. Link Sync (62411)13. Connect/Disconnect (Connect)14. Recovery Clk Mode (Auto)15. Master39。s Side Clock Source (Stratum 1)16. Network type (Router based)Main MenuBundle ConfigurationCES Bundle Configuration Bundle ID[0 4095] ... (1) 1. Tx Bundle Destination (Ethernet) 2. Rx Bundle Destination (PCM) 3. Tx UDP Bundle[0 8191] ... (2) 4. Rx UDP Bundle[0 8191] ... (2) 5. Source IP addr (IP 1) 6. Destination Main Mac addr ... (000000000000) 7. Destination IP address ... () 8. Next Hop ... () 9. Number Of VLAN Tags[0 2] ... (0)10. IP Tos[0 255] ... (0)11. IP TTL[0 255] ... (128)12. PSN Type (IP)13. Far End Interface Type (T1 D4)14. Payload Type (Data)15. Switches Sanity check (Discard)16. Clock Recovery (Enable)17. Differential Time [Usec][1 512000] ... (5000)18. Max Buffer Size [Usec][0 512000] ... (0)19. Number Of Frames[1 1500] ... (80)20. Reordering (YES)21. L Bit amp。 OOS (OOS Mode Conditioning)22. Redundant (Disable)23. RTP Mode (Disable)24. Connect/Disconnect (Connect)25. Next Hop Type (IP)26. Enable JB Reset (On N Times)27. Window Size[2 127] ... (10)Main MenuBundle Assignment 1. Link Number [1 8] ... (1) 2. Bundle ID[0 4095] ... (1) 3. TS Route Type (Coupled) 4. Timeslot Assignment [124] ... (1) 5. TS width (8 Bits)LINUX路由設(shè)置我們的 NISTNET 已經(jīng)安裝 OK！下面進(jìn)行 LINUX 路由設(shè)置：Linux 環(huán)境下雙網(wǎng)卡主機(jī)(1)、環(huán)境：三臺直接相連的計(jì)算機(jī)主機(jī)如圖CLINET 1NIST netCLINET 2其中 NIST net 上有兩塊網(wǎng)卡 eth0、eth1，分別與 CLINET CLINET 2 相連(2)、需求：將 NIST net 配置為路由器模式，用來在 CLINET CLINET 2 之間轉(zhuǎn)發(fā)報(bào)文(3)、方法：將三臺主機(jī)按照環(huán)境所要求用交叉線直接連網(wǎng)后，為三臺主機(jī)分配網(wǎng)段并配置 IP 地址。網(wǎng)段及 IP 地址分配如下： 主機(jī)名 所在網(wǎng)段 分配 IP 網(wǎng)關(guān)CLINET 1: NIST net： : :CLINET 2: 按照上表所示分別將主機(jī) IP 地址配置好，其中要注意的是，要想使 NIST net 具有報(bào)文轉(zhuǎn)發(fā)功能，在 NIST net 上檢查/proc/sys/net/ipv4/ip_forward 中的值是否為 1命令：cat /proc/sys/net/ipv4/ip_forward如果顯示其值不為 1 而是 0 輸入以下命令:echo 1 /proc/sys/net/ipv4/ip_forward //打開 IP 轉(zhuǎn)發(fā)功能打開包的轉(zhuǎn)發(fā)功能通常情況執(zhí)行以下步驟即可：echo 1 /proc/sys/net/ipv4/ip_forward //打開 IP 轉(zhuǎn)發(fā) iptables t nat F // 清除原有的 nat 表中的規(guī)則 iptables F //清除原有的 filter 有中的規(guī)則 iptables P FORWARD ACCEPT //缺省允許 IP 轉(zhuǎn)發(fā) iptables t nat A POSTROUTING o eth0 j MASQUERADE //在公網(wǎng)出口進(jìn)行地址偽裝，這樣即使以后公網(wǎng)地址修改了也不用重新設(shè)置規(guī)則。使用NIST net運(yùn)行NIST net之前，在計(jì)算機(jī)啟動(dòng)時(shí)執(zhí)行以下命令：modprobe nistnet這條命令可以是登錄腳本的一部分，或者用戶可以自行創(chuàng)建一個(gè)可執(zhí)行文件。圖6所示為一個(gè)名為statnist的可執(zhí)行文件的示例腳本。 圖6. 名為statn