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Chapter 6 The System Chassis’s Integrated Switch 6-9
■ 4828965: Disabling global GVRP state prevents dynamic VLANs from leaving
ports
If you disable GVRP globally on the switch by issuing the following command:
then VLANs that have been learned dynamically are not dropped even after the
GVRP leave-all timer has expired (normally 10 seconds). These VLANS remain
active on the ports that learned them, and you must remove them manually. The
following sample command removes the dynamically learned VLAN called vlan 3
from NETP4:
■ Error messages are incomplete.
■ The web GUI (Monitoring=>Port Statistics=>NETMGT) cannot provide traffic
statistics for the NETMGT port. The data for the NETMGT port appears as zeroes
instead of valid data. There is currently no workaround for this problem.
■ Adding packet filtering rules from the Management Port=>Packet Filtering page
must be performed with care, because blank fields on the page will default to a
value of zero. Make sure that you have entered a value into every field you
require, and check that the rule displayed when you click Add is the rule that you
require. In particular, the Protocol Number box next to the Protocol Name box
will accept a protocol name (instead of a numerical value) without displaying an
error, and if you type a name instead of a numerical value the field defaults to
zero.
Console(config)#no bridge-ext gvrp
Console#show vlan
VLAN Type Name Status Ports/Channel groups
---- ------- ---------------- --------- -----------------------
1 Static DefaultVlan Active SNP0 SNP1 SNP2
SNP3 SNP4 SNP5
SNP6 SNP7 SNP8
SNP9 SNP10 SNP11
SNP12 SNP13 SNP14
NETP0 NETP1 NETP2
NETP3 NETP4 NETP5
NETP6 NETP7
2 Static MgtVlan Active NETMGT
3 Dynamic Active NETP4
Console#configure
Console(config)#interface ether NETP4
Console(config-if)#switchport allowed vlan remove 3
Console(config-if)#exit
Console(config)#vlan database
Console(config-vlan)#no vlan 3