CCNP Certification / BCMSN Exam Tutorial: 안전놀이터 Server Load Balancing (SLB)
If you’re focusing on your BCMSN Test on the approach to CCNP certification, you’ll browse at duration regarding http://query.nytimes.com/search/sitesearch/?action=click&contentCollection®ion=TopBar&WT.nav=searchWidget&module=SearchSubmit&pgtype=Homepage#/토토사이트 how Cisco routers and multilayer switches can operate to deliver router redundancy – but there’s An additional beneficial company, Server Load Balancing, that does the same for servers. Whilst HSRP, VRRP, and CLBP all depict multiple Actual physical routers to hosts as one Digital router, SLB signifies multiple physical servers to hosts as just one Digital server.
In the subsequent instance, a few physical servers are already placed to the SRB group ServFarm. They’re represented for the hosts as the virtual server 210.1.1.14.
The hosts will look for to talk to the server at 210.one.one.14, not being aware of which they’re truly speaking While using the routers in ServFarm. This permits quick cutover if one of many physical servers goes down, in addition to serves to cover the actual IP addresses in the servers in ServFarm.
The fundamental operations of SLB includes producing the server farm, followed by producing the Digital server. We’ll to start with insert 210.1.1.11 into the server farm:
MLS(config)# ip slb serverfarm ServFarm
MLS(config-slb-sfarm)# actual 210.one.1.eleven
MLS(config-slb-serious)# inservice
The primary command generates the server farm, with the actual command specifying the IP tackle of the actual server. The inservice command is needed by SLB to look at the server as ready to deal with the server farm’s workload. The true and inservice instructions ought to be repeated for every server while in the server farm.
To create the Digital 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
From your prime down, the vserver was named VIRTUAL_SERVER, which represents the server farm ServFarm. The Digital server is assigned the IP tackle 210.one.one.fourteen, and connections are permitted after the inservice command is used.
You may additionally want to manage which within your community hosts can connect with the Digital server. If hosts or subnets are named Together with the client command, All those will be the only shoppers that will connect to the virtual server. Note this command employs 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)# customer 210.one.1.0 0.0.0.255
SLB may be the server end’s answer to HSRP, VRRP, and GLBP – but you still need to understand it to be a CCNP! Realizing redundancy procedures and protocols is significant in nowadays’s networks, so be sure to’re relaxed with SLB just before taking over the Examination.