BROCADE IP PRIMER

Configuring GSLBIt's the address of the VIP (123.1.2.10) that you should use as your domain'sDNS server. When a domain is registered with an Internet registrar, it requiresat least one DNS server (often two) to list as the authority for this domain. Forour domain, we want to make sure our registrar is pointing to 123.1.2.10 asthis address.Next, we need to define the remote sites involved in the GSLB. These are configuredlike this:SLB-ServerIron#conf tSLB-ServerIron(config)#gslb site londonSLB-ServerIron(config-gslb-site-london)#si-name vip1213.10.20.100SLB-ServerIron(config-gslb-site-london)#si-name vip2213.10.20.200SLB-ServerIron(config-gslb-site-london)#exitSLB-ServerIron(config)#gslb site seoulSLB-ServerIron(config-gslb-site-seoul)#si-name vip1220.200.20.100SLB-ServerIron(config-gslb-site-seoul)#si-name vip2220.200.20.200SLB-ServerIron(config-gslb-site-seoul)#exitSLB-ServerIron(config)#gslb site slcSLB-ServerIron(config-gslb-site-slc)#si-name vip1 123.1.2.100SLB-ServerIron(config-gslb-site-slc)#si-name vip2 123.1.2.200We've configured three sites: “london,” “seoul,” and “slc.” Each site happensto be configured with two VIPs. Let's say that each site is using active/activesymmetric SLB. All of these IP addresses are virtual servers configured ontheir respective ServerIrons. This is also where you configure an administrativepreference. The syntax would be, for example, “si-name vip1 213.10.20.100255.” This sets this specific VIP with an administrative preference of 255.Next, we need to configure our zone file. This will detail what our domain nameis, and what host name we are resolving for these sites.SLB-ServerIron#conf tSLB-ServerIron(config)#gslb dns zone-name brocade.comSLB-ServerIron(config-gslb-dns-brocade.com)#host-info wwwhttpSLB-ServerIron(config-gslb-dns-brocade.com)#host-info ftp ftpHere, we've defined two names: “www.brocade.com” and “ftp.brocade.com.”After each definition, we've specified what service these VIPs will perform. Inthe case of “www,” it's HTTP (TCP 80). In the case of “ftp,” it's, coincidentally,FTP (TCP 21).Finally, you'll want to make sure that the GSLB protocol is enabled on all of theServerIrons involved. This is done in the global config:SLB-ServerIron#conf tSLB-ServerIron(config)#gslb protocolBrocade IP Primer 397