CCNP Certification / BCMSN Exam Tutorial: 먹튀검증 Server Load Balancing (SLB)
Any time you’re working on your BCMSN Examination on your own approach to CCNP certification, you’ll study at length regarding how Cisco routers and multilayer switches can do the job to supply router redundancy – but there’s Yet another practical company, Server Load Balancing, that does the exact same for servers. Even though HSRP, VRRP, and CLBP all signify a number of Actual physical routers to hosts as only one Digital router, SLB signifies many physical servers to hosts as one virtual server.
In the next illustration, a few Actual physical servers have been placed to the SRB team ServFarm. They’re represented to your hosts as being the virtual server 210.1.one.fourteen.
The hosts will find to communicate with the server at 210.1.1.14, not recognizing which they’re actually communicating Using the routers in ServFarm. This permits rapid cutover if on the list of Bodily servers goes down, and in addition serves to hide the actual IP addresses with the servers in ServFarm.
The essential functions of SLB will involve generating the server farm, followed by generating the Digital server. We’ll initial increase 210.1.1.11 on the server farm:
MLS(config)# ip slb serverfarm ServFarm
MLS(config-slb-sfarm)# genuine 210.one.one.11
MLS(config-slb-real)# inservice
The primary command results in the server farm, with the actual http://query.nytimes.com/search/sitesearch/?action=click&contentCollection®ion=TopBar&WT.nav=searchWidget&module=SearchSubmit&pgtype=Homepage#/먹튀검증 command specifying the IP handle of the real server. The inservice command is needed by SLB to consider the server as All set to handle the server farm’s workload. The actual and inservice commands need to be repeated for each server while in the server farm.
To make the virtual 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 leading down, the vserver was named VIRTUAL_SERVER, which represents the server farm ServFarm. The virtual server is assigned the IP handle 210.one.1.fourteen, and connections are permitted after the inservice command is used.
You may also want to regulate which of your respective network hosts can hook up with the Digital server. If hosts or subnets are named With all the consumer command, Individuals would be the only consumers which can hook up with the Digital server. Take note this command employs wildcard masks. The following configuration would allow for just the hosts on the subnet 210.1.one.0 /24 to hook up with the virtual server.
MLS(config-slb-vserver)# customer 210.one.1.0 0.0.0.255
SLB could be the server close’s respond to to HSRP, VRRP, and GLBP – but you still must realize it to be a CCNP! Figuring out redundancy approaches and protocols is vital in right now’s networks, so ensure you’re relaxed with SLB ahead of taking up the Examination.