
Some issues may arise when you connect evices to the two ata interfaces; these are
enumerate below:
9.1 Beware f Forwarding Loops
A common error when wiring KMAX between evices is to irectly (or in irectly) plug both of
the ata ports into the same switch. This configuration creates a packet forwar ing loop. As
soon as the first packet is sent by any evice, the network will reach full capacity as the
packet goes aroun an aroun in an infinite loop.
When wiring KMAX into the network, exercise care to assure that the two network segments,
the one attache to LAN-A an the one attache to LAN-B, are isolate from one another
without any routers, switches, or hubs connecting them together. KMAX shoul be the sole
point of interconnection.
Note: KMAX may be use between two ports of the same switch if that switch is able to
separate those ports onto separate untagge VLANs. However, some switches that emit
Spanning Tree Protocol onto those untagge VLANs may o so incorrectly by using the
same source MAC a ress. This can cause a switch to incorrectly believe that a loop has
been create . KMAX can accommo ate this situation through the use of an Ethernet filter
that classifies those packets into a ban that has been set to rop 100% of the packets on
that ban .
9.2 Link State and Interface Speed
When you connect evices to the two ata interfaces of a KMAX, you shoul always check
that you are getting the link-state in icator at both KMAX as well as on the interfaces to the
evices. Note, however, that the LEDs on the KMAX-MM o not always properly isplay
link-state when connecte to 1G evices. Instea , look at the link state in icators on the
KMAX user interface.
The interfaces on KMAX-MM operate at 10, 100, or 1000 Mbps, full or half uplex. The
interfaces on KMAX-P operate at 10, 100, 1000 Mbps or 10Gbps, full or half uplex. Some
routers, switches, an test equipment have interfaces that are locke an will not negotiate
the spee or uplex setting.
If spee or uplex negotiation is not possible, the easiest cure is to insert an inexpensive,
consumer-gra e 10/100/1000 Mbps or 10Gbps switch into the path between the evice an
KMAX. These switches will usually solve negotiation issues.
10 Upgrading The KMAX Software
Obtain an up ate file from the IWL web site, at http:// support.iwl.com/
Once you have ownloa e that up ate file use the KMAX “Up ate KMAX” item un er the
“Manage System” tab on the user interface.
The up ate process will ownloa the up ate file from your computer onto the KMAX,
vali ate an apply the up ate, an then restart the KMAX.
NOTE: Before resuming use of KMAX you must clear your browser cache and cookies.
KMAX-MM Quick Start Februar 25, 2020 Page 9 of 19