Specifications

Clarifications, Known Behaviors, and Problems
ExtremeWare v6.2.1 Release Notes Page 23
Switching and VLANs
This section describes issues associated directly with Layer 2 switching and VLANs.
FDB Aging Timer
In ExtremeWare v6.2.0, the default value of the FDB aging timer was set to 1800 seconds on a newly
configured v6.2.0 switch. In v 6.2.1 the default value has been changed back to 300 seconds. However,
when upgrading from v6.2.0 to v6.2.1, the default value will remain and 1800 seconds. For upgrades
from earlier versions of ExtremeWare (6.1.9 or earlier) the default value will remain 300 seconds. The
FDB aging time can still be set to all previous values. (1-85QD3)
Default Routes or Static Routes
If you define a default or static route, and then delete the VLAN on the subnet associated with the
default route, the default route entry remains although it is invalid. You must manually delete the
configured route.
If you define multiple default routes, the one with the lowest metric is used. If there are multiple routes
with the same lowest metric, the switch picks one of the routes.
Modifying the Protocol “IP”
If you wish to modify filters associated with the pre-defined “IP” protocol, use the full syntax of the
command. For example “
config ip add ...” will produce an error message but the command
“
config protocol ip add ...” will work correctly (2296).
Configuring a Protocol Filter with ‘ffff’
Creating a protocol filter with LLC of value 0xffff and assigning it to a VLAN will not work, and should
not be attempted. Doing so will assign all traffic to the VLANs containing that filter and will prevent
VLANs with no protocol filter to function properly. If configured and saved, you must issue an
“
unconfigure switch all” to restore normal operation (2644, 4935).
GVRP/GARP
GVRP is currently not supported in EW 6.1.x and above software.
Deleting Protocols from a VLAN
Adding a protocol to a VLAN may cause an EPC if the protocol was added to the VLAN, deleted from
the VLAN, recreated by the user, and re-added to the VLAN (6128).
MAC Based VLANs and DHCP Relay
MAC based VLAN configurations should not be used in conjunction with DHCP. Currently, a host
which enters a MAC-based VLAN will not be able to use DHCP to obtain an IP address.
Maximum Number of VLANs Supported
The maximum number of VLANs supported on the BlackDiamond, Alpine, and Summit “i”-series
switches is now 3000. To configure more than 1024 VLANs, the CPU-transmit-priority level must be set
to “normal”. The CPU transmit priority is set to “high” by default to control the priority in which