5.1

vSphere High Availability
vShield Edge HA is compatible with vSphere HA. If the host on which a vShield Edge instance is running dies,
the vShield Edge is restarted on the standby host thereby ensuring the vShield Edge HA pair is still available
to take another failover.
If vSphere HA is not leveraged, the active-standby vShield Edge HA pair will survive one fail-over. However,
if another fail-over happens before the second HA pair was restored, vShield Edge availability can be
compromised.
For more information on vSphere HA, see vSphere Availability.
Change HA Configuration
You can change the HA configuration that you had specified while installing vShield Edge.
Procedure
1 In the vSphere Client, select Inventory > Hosts & Clusters.
2 Select a datacenter resource from the inventory panel.
3 Click the Network Virtualization tab.
4 Click the Edges link.
5 Double-click the vShield Edge for which you want to specify the syslog servers.
6 Click the Configure tab.
7 Click the Settings link
8 In the HA Configuration panel, click Change.
9 In the Change HA Configuration dialog box, make changes as appropriate.
10 Click OK.
Configure DNS Servers
You can configure external DNS servers to which vShield Edge can relay name resolution requests from clients.
vShield Edge will relay client application requests to the DNS servers to fully resolve a network name and
cache the response from the servers.
Procedure
1 In the vSphere Client, select Inventory > Hosts & Clusters.
2 Select a datacenter resource from the inventory panel.
3 Click the Network Virtualization tab.
4 Click the Edges link.
5 Double-click a vShield Edge instance.
6 Click the Status tab.
7 In the DNS Configuration panel, click Change.
8 Click Enable DNS Service to enable the DNS service.
9 Type IP addresses for both DNS servers.
10 Change the default cache size if required.
Chapter 9 vShield Edge Management
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