13
APRIL 2008
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH
CONFIGURATION LIMITATIONS
Ports to be aggregated must be configured so that they are compatible with the link
aggregation feature and with the partner switch to which they connect.
For the Dell PowerConnect 6200 Series switch, the following limitations apply to aggregated
ports. The commands to remove the configuration are shown below each limitation.
• The port cannot belong to another LAG
• PC6248(config)# interface ethernet 1/g17
PC6248(config-if-1/g17)# no channel-group
• The port cannot be a mirrored port
You need to run the following command if the port 1/g17 is already
configured as a mirror destination port
• PC6248(config)#no monitor session 1 destination
interface
You need to run the following command if the port 1/g17 is already
configured as a mirror source port
• PC6248(config)#no monitor session 1 source
interface 1/g17
To check the configuration of the ports on the Dell PowerConnect 6200 Series switch, use the
show running-config command and look at the interface ethernet 1/gxx
configurations, where the xx indicates the port number.
In the following example, the no monitor session 1 destination interface
command must be issued on port 1/g17 before it can be added to a LAG.
PC6248(config-if-1/g17)#exit
PC6248(config)#exit
PC6248(config)#show running-config
!Current Configuration:
!System Description "PowerConnect M6220, 7.31.0.2, VxWorks5.5.1"
!System Software Version 7.31.0.2
!
Configure
monitor session 1 destination interface 1/g17
Exit
CISCO AND DELL PORT CONFIGURATION DIFFERENCES
On Cisco IOS and CatOS based switches, and also on PowerConnect 6200 Series switch,
ports must be configured identically to be included in a LAG.
Cisco IOS based switches may have the ‘desirable’ and ‘passive’ mode options for the LAG
setting. The PowerConnect 6200 Series switch does not support this implementation. Do not
use the ‘desirable’ or ‘passive’ modes when configuring a LAG with a Dell PowerConnect
switch. Only use the ‘active’ (for LACP) or ‘on’ (for static) modes.
On the PowerConnect 6200 Series switch, when members are added to a LAG they are
removed from all existing VLAN memberships. When members are removed from a LAG they
are added back to the VLANs that they were previously members of as per the configuration
file. Note that a port’s VLAN membership can still be configured when it is a member of a LAG.
However, this configuration is only actually applied when the port leaves the LAG. Additionally,
the port’s GVRP configuration is overridden by the LAG’s GVRP configuration. Upon leaving
the LAG, the port will restore its GVRP configuration. The LAG interface can be a member of a
VLAN complying with IEEE 802.1Q.
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