WAN optimization and HA
WAN optimization and web caching
FortiGate Version 4.0 Administration Guide
634
01-400-89802-20090424
Device 2
60.3 GB
ref: 16
(Vendor: IET Model: VIRTUAL-DISK
Rev: 0)
partition 1
39.1 GB
ref: 17
label:
77A2A1AB1D0EF8B7
WAN optimization and HA
You can configure WAN optimization on a FortiGate HA cluster. The recommended HA
configuration for WAN optimization is active-passive mode. When the cluster is operating,
all WAN optimization sessions s are processed by the primary unit only. Even if the cluster
is operating in active-active mode HA does not load-balance WAN optimization sessions.
You can also form a WAN optimization tunnel between a cluster and a standalone
FortiGate unit or between two clusters.
In a cluster, the web cache and byte cache databases are only stored by the primary unit.
These databases are not synchronized to the subordinate units. So after a failover the
new primary unit must rebuild its web and byte caches. As well, the new primary unit
cannot connect to an iSCSI or SAS partition that was used by the failed primary unit.
Rebuilding the byte caches can happen relatively quickly because the new primary unit
can get byte cache data from the other FortiGate units that it is participating in WAN
optimization tunnels with.
Configuring peers
Go to
WAN Opt. & Cache > Peer
to configure WAN optimization peers. From here you can
add the Local Host ID that identifies the FortiGate unit for WAN optimization and add an
the peer Host ID and IP address of each FortiGate unit that a FortiGate unit can create
WAN optimization tunnels with.
Figure 424: WAN optimization peer list
Viewing basic information
Create New
Add a new peer.
Local Host ID
Enter the local host ID of this FortiGate unit and select Apply. If you add this
FortiGate unit as a peer to another FortiGate unit, use this as the Peer Host ID.
Apply
Add a change to the Local Host ID to the FortiGate configuration.
Adding or
modifying a peer
Select
Create New
to add a new peer or select
Edit
beside an existing peer to
modify it.
Delete
Edit
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