when you change a switchport's mode on an mls, you must change it back to switchport mode before using it as a l2 port again...
to make an mls port a l3 port, you must take it out of l2 mode first and always...
no switchport...
now it is unusable at only l2...
dls1(config)#int f0/15
dls1(config-if)#no sw
dls1(config-if)#sw mode acc
Command rejected: Fa0/15 not a switching port.
dls1(config-if)#sw
dls1(config-if)#sw mode acc
dls1(config-if)#
you knew that... so did i...
you can suspend a vlan... in the suspend state it will not pass packets, but will retain its configuration... this might come in handy for troubleshooting, although i can't quite think of a reason...
dls1(config)#vlan 200
dls1(config-vlan)#state suspend
dls1(config-vlan)#end
dls1#sh vlan id 200
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
200 VLAN0200 suspended Fa0/7, Fa0/8, Fa0/9, Fa0/10
Fa0/11, Fa0/12
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
200 enet 100200 1522 - - - - - 0 0
don't forget to un suspend it, and put the mtu back to the default after you're finished dicking around so you don't get punished...
dls1(config)#vlan 200
dls1(config-vlan)#no state suspend
dls1(config-vlan)#no mtu 1522
dls1(config-vlan)#end
dls1#sh vlan id 200
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
200 VLAN0200 active Fa0/7, Fa0/8, Fa0/9, Fa0/10
Fa0/11, Fa0/12
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
200 enet 100200 1500 - - - - - 0 0
network cisco ccna gns3 certification arteq
a network runs through it
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