network can be learned, and the layer-2 switch is established in this way andMaintain its own address table.
The working principle of a L2 Switch can be inferred from the following three points:
1) because the switch exchanges data on most ports at the same time, a wide switching bus bandwidth is required,If the L2
for routing.Example 2 _ layer-3 Switch:As shown above, assume there are many other floors and many other switches,A three-layer core switch is required to replace the router.------------------------------------------The principle of a layer-3 switch is very easy: one route is used for multiple exchanges. Explanation:
The new iOS-NSDictionary/NSMutableDictionary uses "yes" and "no". The switch controller and NSUserDefaults are used to easily switch applications ., Iosnsuserdefaults
IAronTalk Blog opens.
Not matter of the today will drag tomorrow.
-= -- =-= -= -=-
NSDictionary (dictionary) is a collection data used in Objective-C. It
The Cisco3550EMI switch is used as an instance of the DHCP server project, and the cisco3550emidhcp
Configuration of Cisco3550EMI switch as an instance of DHCP server Engineering
Network Environment:
A 3550EMI switch is divided into three VLANs. vlan2 is the network where the server is located. It is named server, IP a
public License. A copy of the license is available at Http://www.gnu.org/licenses/gpl.html. Software-microcode InformationBios:version 1.0.19-bios VersionLoader:version N/AKickstart:version 5.0 (4b)-kickstart versionSystem:version 5.0 (4b)-microcode version, same as normal and kickstart versionBIOS Compile TIME:02/01/10Kickstart image file Is:bootflash:/m9200-s2ek9-kickstart-mz.5.0.4b.bin-kickstart pathKickstart compile time:11/16/2010 23:00:00 [01/13/2011 15:06:13]System image File Is:bootfl
1, as we all know, we now commonly used routers in general can only be divided into four computers to use.
2, because the router's network cable interface on 5, 1 WAN interface, the external network, the other 4 LAN interface, divided into four PCs.
3, but some people say, my company's computer more than 4 units ah? What about it? People who know a little bit of it immediately thin
Maybe you need to switch machines several times a day, sometimes you can use the CD to boot, sometimes need to log off the replacement of the user, the normal operation, are all through the screen menu to choose, although the way to use the menu to operate very intuitive, but if you add some shortcut keys, can make your action convenient and fast many, the bottom is the switch machine , logout, shutdown, yo
[Cpp]
In the current game development project, different interfaces need to be called according to the item type. The common method is to use [cpp] view plaincopyprint?Switch (itemType){Case ...;Case ...;...}
Switch (itemType){Case ...;Case ...;...} In this case, it will be difficult to add more cases in the future.
The boost library was used in the project, and
Layer-3 Switch ACLs are used to isolate different VLANs. Create three VLANs: vlan10 vlan20 vlan30 www.2cto.com PC1 PC3 vlan10 PC2 PC4 vlan20 PC5 vlan30Vlan10 vlan20 vlan30 cannot communicate with each other but can access the Internet Pc1: 172.16.10.2 pc2: 172.16.20.2 pc3: 172.16.10.3 pc4: 172.16.20.3 pc5: 172.16.30.2 configure R1Int f0/0Ip add 192.168.1.2 255.255.255.0 configure f0/0No shInt lo0Ip add 1.1.
the cache entries of the old a address space will affect the translation of the address space of the B process, so when the process switches, the TLB operation is required to clear the effects of the old process. We have one by one discussions below.2, absolutely no problem, but poor performance of the programWhen the system has a process switch, from process A to process B, which causes the address space
ears? Moreover, the software uses a MIDI device to play the video, ensuring that there is no deviation in the sound accuracy. It can also calculate your accuracy rate! 10. Fruity loops may be a headache for editing drums and percussion voices? The pace of Self-editing is either fragmented and uncentered, or lacks changes. In addition, drums in the sequencer software cannot hear the effects of loop repetition. Very troublesome. Now we have fruity loops, a software built on the loop, dedicated to
Set up:1. Connect the computer to the LAN port of the router, and change the IP address from routed to another network segment address as long as it is not the same segment as the primary router. For example, most of the router address is 192.168.1.1, we just change from a router address to 192.168.0.1 can;2. Again in the settings will be from the router's DHCP function off;3. Finally, connect the main router's network cable to the LAN port from the r
Title: Seek 1+2+...+n, the request cannot use multiplication and division method, for, while, if, else, switch, case and so on keyword and conditional judgment statement (A? B:C)
This problem is indeed a bit biased, most people on the internet to give the solution are recursive. public int sum (int n) {if (n==1)
return 1;
Else
Return N+sum (n-1);
Obviously, the condition is
Appendix: switchport trunk encapsulation {isl | dot1q | negotiate} // configure trunk to encapsulate ISL or 802.1Q or automatically negotiate
Switchport mode {dynamic {auto | desirable} | trunk} is generally not used). Configure the layer-2 trunk mode. Dynamic auto-automatically negotiate whether it is a trunk; dynamic desirable-set the port to trunk if the peer port is trunk, desirable, or automat
device or third-layer device can be added to separate the conflict domain, that is to say, if a bridge, vswitch, and vro are added, the conflicting domain can be divided into smaller parts to reduce the bandwidth competition and conflict. A vro also has the advantage of dividing smaller broadcast domains. This is called network segmentation. Second-layer devices are used to reduce the range of conflicting domains, which is called "differential segmen
View C # (2) through IL)
Switch Statement (lower)
Address: http://www.cnblogs.com/AndersLiu/archive/2008/11/06/csharp-via-il-switch-2.html
Original: Anders Liu
Abstract: The switch statement is a common jump statement in C #. Different codes can be executed based on differen
Case four custom switches:
Function Introduction: The function of this case is to create a custom switch, you can decide the background of the switch. When the slide switch, the slider of the switch can follow the finger to move. When the finger is released, the slider slides to the right or to the far left, depending
Mac layer Attack rumor address floodA common two-layer attack or switch attack is a Mac flood, with an intruder using a large number of invalid source MAC addresses, which can cause the switch's cam table to overflow, because the switch cannot find the port corresponding to the destination MAC address in the MAC address table, causing the switch to periodically f
Android custom control series 2: Custom switch button (1), android Control
This time, we will implement a complete and pure custom control, instead of using the system control like the previous Composite Control. The plan is divided into three parts:Basic Part of the custom control,Processing of touch events of Custom ControlsAndCustom properties of a custom control;
Next we will start writing the first par
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