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31 Chapter3
vlan 8021q trunk
[PortNumber]
access-link untag
[UntaggedVID]
V
Assign a access link for VLAN by
trunk group
switch(vlan)#vlan 8021q trunk 3 access-link untag
33
vlan 8021q trunk
[PortNumber]
trunk-link tag
[TaggedVID List]
V
Assign a trunk link for VLAN by trunk
group
switch(vlan)#vlan 8021q trunk 3 trunk-link tag
2,3,6,99
or
switch(vlan)#vlan 8021q trunk 3 trunk-link tag 3-
20
vlan 8021q trunk
[PortNumber]
hybrid-link untag
[UntaggedVID]
tag
[TaggedVID List]
V
Assign a hybrid link for VLAN by
trunk group
switch(vlan)#vlan 8021q trunk 3 hybrid-link untag
4 tag 3,6,8
or
switch(vlan)#vlan 8021q trunk 3 hybrid-link untag
5 tag 6-8
show vlan [GroupID]
or
show vlan
V
Show VLAN information switch(vlan)#show vlan 23
no vlan group
[GroupID]
V
Delete port base group ID switch(vlan)#no vlan group 2
3.1.7 Spanning Tree Commands Set
Table 3.7: Spanning Tree Commands Set
Netstar Commands Level Description Example
spanning-tree enable G
Enable spanning tree switch(config)#spanning-tree enable
spanning-tree priority [0~61440]
G
Configure spanning tree priority
parameter
switch(config)#spanning-tree priority 32767
spanning-tree max-age [seconds]
G
Use the spanning-tree max-age
global configuration command to
change the interval between
messages the spanning tree
receives from the root switch. If a
switch does not receive a bridge
protocol data unit (BPDU)
message from the root switch
within this interval, it recomputed
the Spanning Tree Protocol (STP)
topology.
switch(config)#spanning-tree max-age 15
spanning-tree hello-time [seconds]
G
Use the spanning-tree hello-time
global configuration command to
specify the interval between hello
bridge protocol data units
(BPDUs).
switch(config)#spanning-tree hello-time 3
spanning-tree forward-time [seconds]
G
Use the spanning-tree forward-
time global configuration command
to set the forwarding-time for the
specified spanning-tree instances.
The forwarding time determines
how long each of the listening and
learning states last before the port
begins forwarding.
switch(config)#spanning-tree forward-time 20
stp-path-cost
[1~200000000]
I
Use the spanning-tree cost
interface configuration command
to set the path cost for Spanning
Tree
Protocol (STP) calculations. In the
event of a loop, spanning tree
considers the path cost when
selecting
an interface to place into the
forwarding state.
switch(config)#interface fastEthernet 2
switch(config-if)#stp-path-cost 20
stp-path-priority
[Port Priority]
I
Use the spanning-tree port-priority
interface configuration command
to configure a port priority that
is used when two switches tie for
switch(config)#interface fastEthernet 2
switch(config-if)#stp-path-priority 128