CCNP Certification / BCMSN Test Tutorial: Server Load Balancing (SLB)
Any time you’re focusing on your BCMSN Examination in your solution to CCNP certification, you’ll examine at length about how Cisco routers and multilayer switches can perform to supply router redundancy – http://edition.cnn.com/search/?text=먹튀검증 but there’s A different beneficial assistance, Server Load Balancing, that does exactly the same for servers. Though HSRP, VRRP, and CLBP all represent many Bodily routers to hosts as only one virtual router, SLB signifies various Actual physical servers to hosts as just one Digital server.
In the next illustration, 3 physical servers happen to be put in to the SRB group ServFarm. They’re represented on the hosts because the virtual server 210.one.1.14.
The hosts will seek out to talk to the server at 210.1.one.fourteen, not being aware of which they’re actually communicating Using the routers in ServFarm. This allows speedy cutover if on the list of physical servers goes down, as well as serves to hide the particular IP addresses on the servers in ServFarm.
The basic operations of SLB includes creating the server farm, followed by making the virtual server. We’ll initial incorporate 210.1.1.eleven on the server farm:
MLS(config)# ip slb serverfarm ServFarm
MLS(config-slb-sfarm)# genuine 210.one.1.11
MLS(config-slb-real)# inservice
The first command creates the server farm, with the real command specifying the IP tackle of the actual server. The inservice command is required by SLB to think 토토사이트 about the server as Prepared to take care of the server farm’s workload. The true and inservice commands ought to be recurring for each server while in the server farm.
To develop the Digital server:
MLS(config)# ip slb vserver VIRTUAL_SERVER
MLS(config-slb-vserver)# serverfarm ServFarm
MLS(config-slb-vserver)# Digital 210.one.1.14
MLS(config-slb-vserver)# inservice
In the prime down, the vserver was named VIRTUAL_SERVER, which represents the server farm ServFarm. The virtual server is assigned the IP tackle 210.one.1.fourteen, and connections are authorized after the inservice command is used.
You may additionally want to control which within your community hosts can connect to the virtual server. If hosts or subnets are named With all the client command, All those will be the only customers which can connect to the virtual server. Notice this command makes use of wildcard masks. The next configuration would enable just the hosts to the subnet 210.one.one.0 /24 to hook up with the Digital server.
MLS(config-slb-vserver)# client 210.1.1.0 0.0.0.255
SLB may be the server close’s remedy to HSRP, VRRP, and GLBP – but you still need to realize it to become a CCNP! Figuring out redundancy techniques and protocols is significant in nowadays’s networks, so ensure you’re cozy with SLB just before taking over the Examination.