!
active-partition dns
!
!
interface ethernet 1/3 
  name myisp1 
  enable 
  ip address 1.2.3.2 255.255.255.240 
!
interface ethernet 1/4 
  name myisp2 
  enable 
  ip address 2.3.4.2 255.255.255.240 
!
interface ethernet 2/3 
  name myisp1 
  enable 
  ip address 1.2.3.3 255.255.255.240 
!
interface ethernet 2/4 
  name myisp2 
  enable 
  ip address 2.3.4.3 255.255.255.240 
!
!
device-context 1
  ip route 0.0.0.0 /0 1.2.3.14
  ip route 0.0.0.0 /0 2.3.4.14 100
!
device-context 2
  ip route 0.0.0.0 /0 1.2.3.14
  ip route 0.0.0.0 /0 2.3.4.14 100
!
health monitor ping-one 
  override-ipv4 1.1.1.1 
!
slb virtual-server dns1-myisp1 1.2.3.10 
  port 53 dns-udp 
    gslb-enable 
    use-rcv-hop-for-resp 
!
slb virtual-server dns2-myisp2 2.3.4.10 
  port 53 dns-udp 
    gslb-enable 
    use-rcv-hop-for-resp 
!
gslb service-ip myisp1-5 1.2.3.5
  health-check ping-one 
  port 443 tcp 
!
gslb service-ip myisp2-5 2.3.4.5 
  health-check ping-one 
  port 443 tcp 
!
gslb site myisp1 
  ip-server myisp1-5 
!
gslb site myisp2 
  ip-server myisp2-5
!
gslb policy gslb-policy 
  health-check-preference-enable 
  weighted-ip-enable 
  no geographic 
  no round-robin 
  metric-force-check 
  metric-fail-break 
  metric-order health-check weighted-ip 
  dns backup-server 
  dns selected-only 1 
  dns logging both 
  dns server authoritative 
!
gslb zone gslb.mydomain.com 
  policy gslb-policy 
  dns-ns-record vdns1.mydomain.com 
  dns-ns-record vdns2.mydomain.com 
  service 443 mysite 
    dns-a-record myisp1-5 ttl 60 static 
    dns-a-record myisp2-5 as-backup ttl 60 static 
!
gslb service-group SG-LyncEdge 
  member av.gslb.mydomain.com 
  member access.gslb.mydomain.com 
  member webconf.gslb.mydomain.com 
  dependency site 
!
end