Technical data

BLADE OS 5.1 Application Guide
BMD00136, November 2009 Chapter 4: Ports and Trunking
 69
3. Connect the switch ports that will be members in the trunk group.
Trunk group 3 (on the G8000) is now connected to trunk group 1 (on the other switch).
Note – In this example, two G8000 switches are used. If a third-party device supporting link
aggregation is used (such as Cisco routers and switches with EtherChannel technology or Sun's
Quad Fast Ethernet Adapter), trunk groups on the third-party device should be configured manually.
Connection problems could arise when using automatic trunk group negotiation on the third-party
device.
4. Examine the trunking information on each switch.
Information about each port in each configured trunk group is displayed. Make sure that trunk
groups consist of the expected ports and that each port is in the expected state.
The following restrictions apply:
 Any physical switch port can belong to only one trunk group.
 Up to eight ports can belong to the same trunk group.
 All ports in static trunks must be have the same link configuration (speed, duplex, flow
control).
 Trunking from third-party devices must comply with Cisco
®
EtherChannel
®
technology.
Configurable Trunk Hash Algorithm
This feature allows you to configure parameters for the trunk hash algorithm, instead of using the
default values.
Use the IP Trunk Hash commands to configure new default behavior for Layer 2 traffic and Layer 3
traffic. The trunk hash settings affect both static trunks and LACP trunks.
You can select a minimum of one or a maximum of two parameters to create one of the
following configurations:
 Source MAC (SMAC):
# show portchannel information
PortChannel 3: Enabled
port state:
2: STG 1 forwarding
23: STG 1 forwarding
30: STG 1 forwarding
RS G8000 (config)# portchannel hash source-mac-address