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136 Managing the PowerVault NX3500
Packets that are sent to clients in subnet Y would be routed to router X, which
would then be sent back (through the switch) to router Y. This means these
packets travel through router X needlessly, reducing the throughput to all
subnets in your network.
The solution is to define, in addition to a default gateway, a specific gateway
for certain subnets–configuring static routes. To do this you would have to
describe each subnet in your network and identify the most suitable gateway
to access that subnet.
You do not have to do so for the entire network - a default gateway is most
suitable when performance is not an issue. You can select when and where to
use static routes to best meet your performance needs. See "Managing Static
Routes" on page 137.
Configuring DNS
Domain Name System (DNS) is the name resolution service that enables
users to locate computers on a network or on the Internet (TCP/IP network)
by using the domain name. The DNS server maintains a database of domain
names (host names) and their corresponding IP addresses providing
name-to-address and address-to-name resolution services on the IP network.
You can configure one or more external DNS server (external to PowerVault
NX3500 but within the site) to be used for name resolutions.
To configure DNS parameters, select System ManagementNetwork
DNS Configuration.
Adding DNS Servers
To add a DNS server:
1
Click
Add DNS Server
in the
Action
bar.
A new empty row is added to the list of DNS servers.
2
Set the IP address of the client environment primary DNS.
Removing DNS Servers
To remove DNS servers:
1
Select the required DNS server.
2
Click
Delete
in the
Action
bar.