Using VLANs, Spanning Tree, and Hunt Groups (Layer 2 and Layer 3)
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12
Cajun P550/P220 Switch Operation Guide
Hunt groups also provide fault tolerance. If a port in a hunt group fails, the remaining
ports will continue forwarding the traffic on the link.
Hunt Group Considerations
Considerations before creating hunt groups include:
❒
The switches do not yet have a link discovery protocol. When creating a hunt
group, you have to verify that the ports in a group on one switch are physically
connected to the ports in that group on the other switch.
❒
If one end of a connection is in a hunt group, the other end of the connection
should also be in a hunt group. If you don’t do this, the forwarding behavior of the
hunt group will be unpredictable.
❒
You should disable the ports in a hunt group until both ends of the link are
configured.
❒
All ports in a hunt group must be the same speed.
❒
Packets arriving on different fabric ports within the switch will have loads balanced
more evenly.
❒
Hunt groups will not load share if the source and destination traffic and the hunt
group ports are on the same fabric port. Most I/O modules divide their ports evenly
across two fabric ports. For 10-port and 12-port I/O modules, all ports use a single
fabric port.
❒
The first port assigned to a hunt group becomes the flood port. It can not be
changed unless the flood port is disabled.
Configuring Hunt Groups
To configure a hunt group:
1.
Ensure that the same-speed ports that you are configuring into a hunt group are
physically connected to each other (for example, in a four-port gigabit hunt group,
ensure that you have four fiber cables with switch ports connected at each end).
Note:
Auto-negotiation should be disabled on the ports to further insure against
speed mismatch.
2.
From the
System Configuration
section of the Web Agent window, click
Modules and Ports
. The Module Information dialog box opens.
3.
In the
Ports
column, click on the
port number
. The Physical Port Configuration
dialog box opens.
Содержание Cajun P220
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