CCNP Certification/BCMSN Exam Tutorial – Server Load Balancing (SLB)

At the point when you’re working on your BCMSN test on your approach to CCNP accreditation, you’ll read finally about how Cisco switches and multi-facet switches can attempt to give switch repetition – however there’s another useful help, Server Load Balancing that does likewise for workers. While HSRP, VRRP, and CLBP all address numerous actual switches to has as a solitary virtual switch, SLB addresses various actual workers to has as a solitary virtual worker.

In the accompanying model, three actual workers have been set into the SRB bunch ServFarm. They’re addressed to the hosts as the virtual worker 210.1.1.14.

The hosts will look to speak with the worker at 210.1.1.14, not realizing that they’re really speaking with the switches in ServFarm. This permits brisk cutover in the event that one of the actual workers goes down, and furthermore serves to shroud the genuine IP locations of the workers in ServFarm.

The essential tasks of SLB includes making the worker ranch, trailed by making the virtual worker. We’ll first add 210.1.1.11 to the worker ranch:

MLS(config)# ip slb serverfarm ServFarm

MLS(config-slb-sfarm)# genuine 210.1.1.11

MLS(config-slb-real)# inservice

The load balancing software primary order makes the worker ranch, with the genuine order indicating the IP address of the genuine worker. The inservice order is needed by SLB to consider the worker as prepared to deal with the worker ranch’s workload. The genuine and inservice orders ought to be rehashed for every worker in the worker ranch.

To make the virtual worker:

MLS(config)# ip slb vserver VIRTUAL_SERVER

MLS(config-slb-vserver)# serverfarm ServFarm

MLS(config-slb-vserver)# virtual 210.1.1.14

MLS(config-slb-vserver)# inservice

Starting from the top, the vserver was named VIRTUAL_SERVER, which addresses the worker ranch ServFarm. The virtual worker is relegated the IP address 210.1.1.14, and associations are permitted once the inservice order is applied.

You may likewise need to control which of your organization hosts can associate with the virtual worker. On the off chance that hosts or subnets are named with the customer order, those will be the solitary customers that can associate with the virtual worker. Note that this order utilizes special case veils. The accompanying setup would permit just the hosts on the subnet 210.1.1.0/24 to associate with the virtual worker.

MLS(config-slb-vserver)# customer 210.1.1.0 0.0.0.255

SLB is the worker end’s response to HSRP, VRRP, and GLBP – yet you actually need to realize it to turn into a CCNP! Knowing excess methodologies and conventions is fundamental in the present organizations, so ensure you’re OK with SLB prior to taking on the test.