CCNP Certification / BCMSN Examination Tutorial: Server Load Balancing (SLB)
Whenever you’re engaged on your BCMSN exam with your technique to CCNP certification, you’ll browse at size about how Cisco routers and multilayer switches can work to https://en.wikipedia.org/wiki/?search=토토사이트 provide router redundancy – but there’s An additional valuable service, Server Load Balancing, that does the exact same for servers. While HSRP, VRRP, and CLBP all stand for numerous physical routers to hosts as only one virtual router, SLB represents many physical servers to hosts as only one Digital server.
In the subsequent case in point, three physical servers are actually positioned into your SRB team ServFarm. They’re represented towards the hosts since the virtual server 210.1.1.fourteen.
The hosts will request to communicate with the server at 210.one.one.fourteen, not figuring out that they’re in fact speaking with the routers in ServFarm. This allows fast cutover if among the list of Bodily servers goes down, and also serves to hide the actual IP addresses with the servers in ServFarm.
The basic functions of SLB will involve making the server farm, followed by creating the virtual server. We’ll 1st include 210.one.one.11 to your server farm:
MLS(config)# ip slb serverfarm ServFarm
MLS(config-slb-sfarm)# authentic 210.1.1.eleven
MLS(config-slb-real)# inservice
The primary command creates the server farm, with the real command specifying the IP address of the actual server. The inservice command is required by SLB to think about the server as Prepared to take care of the server farm’s workload. The actual and inservice instructions needs to be repeated for each server in the server farm.
To produce the Digital server:
MLS(config)# ip slb vserver VIRTUAL_SERVER
MLS(config-slb-vserver)# serverfarm ServFarm
MLS(config-slb-vserver)# virtual 210.one.one.14
MLS(config-slb-vserver)# inservice
With the prime down, the vserver was named VIRTUAL_SERVER, which represents the server farm ServFarm. The Digital server is assigned the IP address 210.one.1.14, and connections are permitted once the inservice command is utilized.
You 먹튀검증 might also want to control which of your respective network hosts can connect with the virtual server. If hosts or subnets are named While using the customer command, those would be the only clients that may hook up with the Digital server. Be aware this command uses wildcard masks. The following configuration would make it possible for just the hosts within the subnet 210.1.1.0 /24 to hook up with the virtual server.
MLS(config-slb-vserver)# customer 210.one.one.0 0.0.0.255
SLB may be the server close’s answer to HSRP, VRRP, and GLBP – but you still ought to realize it to be a CCNP! Realizing redundancy techniques and protocols is significant in currently’s networks, so ensure that you’re relaxed with SLB prior to taking over the exam.