adsl load balancing router

NAT (network address translation) simply translates an IP address into another IP address, which is typically used for conversion between unregistered internal addresses and legitimate, registered Internet IP addresses. It is suitable for resolving the Internet IP address tension, do not want to let the network outside know the internal network structure and so on. Each NAT conversion is bound to increase the cost of the NAT device, but this extra overhead is trivial for most networks, except on

Experiment topology: Lab environment: GNS3 and C3640 Purpose: To verify whether the auto-load balancing function is implemented by the kernel. Next we will start the experiment 1. Configure an IP address for R1 R1> en R1 # conf Starting ing from terminal, memory, or network [terminal]? Enter configuration commands, one per line. End with CNTL/Z. R1 (config) # int lo0 R1 (config-if) # ip add 1.1. * Mar 1

mod_jk libLoadmodule jk_module modules/mod_jk.so# Where to find workers. PropertiesJkworkersfile CONF/workers. Properties# Where to put JK logsJklogfile logs/mod_jk.log# Set the jk log level [debug/error/info]Jkloglevel info# Select the log formatJklogstampformat "[% A % B % d % H: % m: % S % Y]"# Jkoptions indicates to send SSK key sizeJkoptions + forwardkeysize + forwarduricompat-forwarddirectories# JkrequestlogformatJkrequestlogformat "% w % v % t"# Mount your applicationsJkmount/* loadbalan

balancing operation,one needs several CARP interfaces that are configured to the same IPaddress, but to a different VHIDs. Once an ARP request is received, theCARP protocol will use a hashing function against the source IP addressin the ARP request to determine which VHID should this request belong to.If the corresponding CARP interface is in master state, the ARP requestwill be replied, otherwise it will be ignored. See the EXAMPLES sectionfor a p

Reprint http://hi.baidu.com/aking_roc/item/3f62cb0f57b49736a3332a9eLoad balancer devices are also often referred to as "four to seven layer switches", so what is the difference between the four and seven tiers?First, the technical principle of the difference.The so-called four-layer load balancing , that is, mainly through the message of the destination address and port, coupled with the

performing load balancing, You need to analyze some specific fields based on different user needs and then forward them to different servers. Therefore, we need to focus on resolving the DHCP packet format. 2. DHCP packet format DHCP is an extension of the BOOTP protocol. The data packet formats of the two are the same. Some fields in the packet are used for BOOTP. The following figure shows the DHCP pack

. However, it should be pointed out that IGMP supports multicast only when NLB is configured.(Multicast) mode. When you select multicast mode, there is a repeat option "IGMPMulticast (IGMP Multicast) ". If this option is selected, NLB retains the original MAC address, but addsIGMP multicast address. In addition, the NLB host sends an IGMP message for this group. If the switch detects these messages, it can use the desired multicast address to fill in its ownIn this way, the inbound traffic will

backbone network from conventional third layer to comprehensive third-layer, fourth-layer switching function, its unique WAN integration capability and the access control based on layer fourth exchange have played a key role in secure and orderly network data transmission. In addition, Cabletron SmartSwitch router provides different levels of prioritization for specific business application data exchange based on the QoS features of layer fourth swit