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Chapter 7 Trunks
ZyWALL (ZLD) CLI Reference Guide
96
The following example creates a spill-over trunk for Ethernet interfaces ge1 and ge3, which will
apply to both incoming and outgoing traffic through the trunk.. The
ZyWALL sends traffic
through ge1 until it hits the limit of 1000 kbps. The
ZyWALL sends anything over 1000 kbps
through ge3.
7.6 Link Sticking
You can have the ZyWALL send each local computer’s traffic through a single WAN interface for a
specified period of time. This is useful when a redirect server forwards a user request for a file and
informs the file server that a particular WAN IP address is requesting the file. If the user’s
subsequent sessions came from a different WAN IP address, the file server would deny the request.
Here is an example.
Figure 14 Link Sticking
1 LAN user A tries to download a file from server B on the Internet. The ZyWALL uses WAN1 to send
the request to server B.
2 However remote server B is actually a redirect server. So server B sends a file list to LAN user A.
The file list lets LAN user A’s computer know that the desired file is actually on file server (C). At the
same time, register server B informs file server C that a computer located at the WAN1’s IP address
will download a file.
3 The ZyWALL is using active/active load balancing. So when LAN user A tries to retrieve the file from
file server C, the request goes out through WAN2.
Router# configure terminal
Router(config)# interface-group spill-example
Router(if-group)# mode trunk
Router(if-group)# algorithm spill-over
Router(if-group)# interface 1 ge1 limit 1000
Router(if-group)# interface 2 ge3 limit 1000
Router(if-group)# loadbalancing-index total
Router(if-group)# exit
Router(config)#
LAN
WAN1
WAN2
A
B
C
1
2
3
4