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Network Topology As mentioned above, OSPF is a link status protocol. How does OSPF describe the link connection status? Abstract Model 1 indicates that an Ethernet interface of a router is connected to only one Ethernet segment instead of other routers. In this case, router R1 running OSPF can only identify itself and cannot identify the devices (hosts, etc.) on this network segment ); abstract Model 2 indicates that router R1 is connected to a router R2 through a point-to-point link (such as P

Lab requirements:Set up the topology, import the pre-configuration, and troubleshoot the following errors.1. The link between R1 and SW1 cannot start;2. SW1 cannot start the trunk link between SW2 and SW3;3. Problems with etherchannel between SW2 and SW3;4. The HSRP between SW2 and SW3 cannot be automatically switched;5. R1 and R2 cannot dynamically obtain the address from DHCP server R3;6. R1 cannot access the server 5.5.5.5 on the ISP R5 without R2;

CCNP comprehensive experiment- The top labs are as follows: 650) this. width = 650; "alt =" "border =" 0 "src =" http://img1.51cto.com/attachment/201104/185551130.jpg "/>Lab requirements: 1: R3, R4 for NAT, R3 E0/1 for export, and R4 E0/0 for export. 2: R3, R4, R5, R7, R8 do OSPF, R3, R4, R5, R7 do frame-relay, R7 do FR switch. . 8.8.8 reaches 1.1.1.1 and is converted from R3 to public IP address 3.3.3.3.

This article mainly introduces the related functions of Nginx Plus, which spans the various versions of Nginx plus R5/R6/R7/R9. The more advanced usage of Nginx reverse proxy and load balancing is involved. Mainly include: HTTP load balancer, HTTP long connection, TCP and UDP load balancing, upstream connection limit, the shortest time Equalization algorithm, session consistency, real-time health check, DNS re-resolution, access control, client connec

) Buffer2: = Make ([]byte, 2)//read into N2 length information to Buffer2, err: = N2 ( BUFFER2) Check (err) fmt. Printf ("%d bytes after%dPosition:%s\n ", N2, O2, String (buffer2))//function with IO Package can also implement similar functions O3, err: = F.seek (6, 0) Check (err) Buffer3: = Make ([]byte, 2 ) N3, err: = Io. Readatleast (f, Buffer3, Len (buffer3)) Check (err) fmt. Printf ("%d bytes after%d position:%s\n", N3, O3, String (BUFFER3))//mode three//by Bufio package to read Bufio There

#/opt/megacli-ldgetprop-cache-lall-aallro#/opt/megacli-ldgetprop- Dskcache-lall-aall5. Set the disk cache policyCaching Policy Explanation:WT (write Throughwb (write back) NORA (No read ahead) RA (read ahead) ADRA (Adaptive read ahead) CacheddirectExample:#/opt/megacli-ldsetprop wt| wb| nora| ra| Adra-l0-a0or#/opt/megacli-ldsetprop-cached|-direct-l0-/ Disable disk cache#/opt/ Megacli-ldsetprop-endskcache|-disdskcache-l0-a06. Create a RAID5 array, composed of physical disk 2,3,4, the h

Summary The development website www.android.com is in harmony, and the content on the official SDK website needs to be turned over. Http://www.android123.com.cn/android_kit.html Android-sdk_r08-windows.zip Android-ndk-r5-windows.zip ADT-8.0.0.zip Eclipse-java-europa-winter-win32.zip Because the android architecture interface is implemented in Java, most of the software is developed in Java. You can use the SDK at this time; you can

then remove the library files (such as c51s. lib) and cfunc. c, and the cfunc. add A51 to the project.// The cfunc. SRC file is as follows. \ cfunc. SRC generated from: cfunc. c Name cfunc? PR? _ Afunc? Cfunc segment code? Bi? _ Afunc? Cfunc segment bit overlayable public? _ Afunc? Bit public _ afunc rseg? Bi? _ Afunc? Cfunc? _ Afunc? Bit: v_bflag? 041: dbit 1 ; # Define uchar unsigned char; # define uint unsigned int; uint afunc (uchar v_achr, bit v_bflag) Rseg? PR? _ Afunc? Cfunc_afunc: using

|-direct-l0-a0orenable/disable Disk cache Megacli-ldsetprop-endskcache|-disdskcache-l0-a04, create/delete array 4.1 create a RAID5 array, Composed of physical disk 2,3,4, the hot spare of the array is the physical disk 5NBSP;MEGACLI-CFGLDADD-R5 [1:2,1:3,1:4] WB direct-hsp[1:5]–a0 nbsp;4.2 Create array, do not specify hot spare NBSP;MEGACLI-CFGLDADD-R5 [1:2,1:3,1:4] WB direct–a04.3 Delete array Megacli-cfgl

______| Chapter 2 |------Classification of route selection protocols~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~RIP V2 featuresBasic configuration of RIP v2* *** RIP v2 implements VLSM Division (Variable Length subnet mask)Summary of CIDR routes implemented by RIP v2RIP 2 implements load balancing with equal hop pathsRIP2 authentication ConfigurationRIP2 configuration passive interface to suppress route update------------------IP address planningSome D-class selection prot

shutR5 (config-if) # int lo 1R5 (config-if) # ip add 192.168.8.1 255.255.255.0R5 (config-if) # no shutR5 (config-if) # router ospf 223R5 (config-router) # network 192.168.4.0 0.0.0.255 area 0R5 (config-router) # network 192.168.8.0 0.0.0.255 area 0View R5 router route table: www.2cto.com C 192.168.8.0/24 is directly connected, Loopback1C 192.168.4.0/24 is directly connected, Serial1/3192.168.7.0/32 is subnetted, 1 subnetsO 192.168.7.1 [110/65] via 19

"39" as 100111, that is, hexadecimal 0x27 ", the first byte of complete bytes 39 is 01100111, 0x27 + 0x40 ).Byte2-5: Command arguments, command parameters, some commands do not have parameters.Byte6: the first 7 bits are CRC (Cyclic redundacy check, cyclic redundancy check) Check bits, and the last bits are stopped bits 0. Among them, bit [45: 40] consists of 6 bits to form the command index. In other words, there are a total of 2 ^ 6 power (64) cmd, these cmd commands are used along with card

something $", regexoptions. multiline );Console. writeline ("R2 match count:" + r2.matches (I). Count); // 0RegEx R3 = new RegEx ("^ live for nothing, \ r \ ndie for something $ ");Console. writeline ("R3 match count:" + r3.matches (I). Count); // 1RegEx r4 = new RegEx ("^ live for nothing, $ ");Console. writeline ("R4 match count:" + r4.matches (I). Count); // 0RegEx R5 = new RegEx ("^ live for nothing, $", regexoptions. multiline );Console. writeli

compiler design.3.2 align data access The load/store command of the CPU of the Proteus requires data to be aligned. Data with a length of 4 should be placed on the 4N boundary, and data with a length of 2 should be placed on the 2N boundary. Take the arm cpu load as an example: LDR R5,[R4]LDRSH R7,[R6]LDRB R9,[R8] LDR, ldrsh, and ldrb read one word, half word, and byte from the memory and put them in the specified register. For example

Let's say that logcat show you the following crash log (this is from one of my projects ): Log Code I/debug (31 ): **************************************** ******** I/debug (31): Build fingerprint: 'generic/SDK/generic: 2.3/grh55/79397: Eng/test-keys' I/debug (31): PID: 378, TID: 386 >>>com. example. gltest I/debug (31): Signal 11 (SIGSEGV), Code 1 (segv_maperr), fault ADDR 00000000 I/debug (31): R0 001dbdc0 R1 00000001 R2 00000000 R3 00000000 I/debug (31): R4 00000000

) True String I = @ "Live for nothing, Die for something "; // multiple rows RegEx R1 = new RegEx ("^ live for nothing, die for something $ "); Console. writeline ("R1 match count:" + r1.matches (I). Count); // 0 RegEx r2 = new RegEx ("^ live for nothing, die for something $", regexoptions. multiline ); Console. writeline ("R2 match count:" + r2.matches (I). Count); // 0 RegEx R3 = new RegEx ("^ live for nothing, \ r \ ndie for something $ "); Console. writeline ("R3 match count:" + r3.matches