CCNP Certification / BCMSN Test Tutorial: Server Load Balancing (SLB)
If you’re working on your BCMSN exam with your way to CCNP certification, you’ll read through at duration regarding how Cisco routers and multilayer switches can do the job to deliver router redundancy – but http://query.nytimes.com/search/sitesearch/?action=click&contentCollection®ion=TopBar&WT.nav=searchWidget&module=SearchSubmit&pgtype=Homepage#/먹튀검증 there’s One more helpful support, Server Load Balancing, that does the same for servers. Though HSRP, VRRP, and CLBP all signify several physical routers to hosts as just one virtual router, SLB represents a number of physical servers to hosts as only one virtual server.
In the next instance, 3 Actual physical servers have been put in the SRB team ServFarm. They’re represented to the hosts since the virtual server 210.1.1.14.
The hosts will search for to talk to the server at 210.1.one.14, not recognizing that they’re truly speaking with the routers in ServFarm. This permits brief cutover if among the Actual physical servers goes down, and likewise serves to cover the actual IP addresses of your servers in ServFarm.
The fundamental operations of SLB requires creating the server farm, followed by making the Digital server. We’ll to start with add 210.1.1.eleven for the server farm:
MLS(config)# ip slb serverfarm ServFarm
MLS(config-slb-sfarm)# serious 210.1.1.eleven
MLS(config-slb-real)# inservice
The first command makes the server farm, with the real command specifying the IP handle of the real server. The inservice command is required by SLB to take into account the server as Prepared to take care of the server farm’s workload. The real and inservice instructions need to be repeated for every server while in the server farm.
To generate the virtual server:
MLS(config)# ip slb vserver VIRTUAL_SERVER
MLS(config-slb-vserver)# serverfarm ServFarm
MLS(config-slb-vserver)# virtual 210.one.one.fourteen
MLS(config-slb-vserver)# inservice
Within the major down, the vserver was named VIRTUAL_SERVER, which represents the server farm ServFarm. The Digital server is assigned the IP handle 210.1.1.fourteen, and connections are allowed as soon as the inservice command is used.
You may also want to regulate which of the network hosts can hook up with the virtual server. If hosts or subnets are named While using the client command, People would be the only clientele that could connect with the virtual server. Take note this command uses 토토사이트 wildcard masks. The subsequent configuration would make it possible for just the hosts to the subnet 210.one.1.0 /24 to connect to the virtual server.
MLS(config-slb-vserver)# client 210.1.1.0 0.0.0.255
SLB will be the server finish’s remedy to HSRP, VRRP, and GLBP – but you continue to must understand it to be a CCNP! Figuring out redundancy procedures and protocols is important in currently’s networks, so be sure to’re comfy with SLB just before taking on the Test.