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1.1.c-d VLANs & Trunking
Cisco-CCIE
9
Computer Networking
Professional
02/12/2017

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Cards

Term
commands to disable dtp on a switchport
Definition
switchport nonegotiate
switchport mode access
Term
if the mode of a switchport is configured as "dynamic auto", what mode must be configured on the other end for dtp to negotiate a trunk?
Definition
"dynamic desirable" or "trunk".
"trunk" mode does not diasable dtp.
Term
command to determine which trunks were negotiated or hard configured.
Definition
sh int trunk.
Term
what does "n-802.1q" indicate when using the "sh int trunk" command?
Definition
802.1Q trunking was negotiated using DTP.
Term
command to determine which vlan has its frames untagged when they are sent over an 802.1q trunk.
Definition
swit trun nativ vl 1
Term
how is the native vlan of the other end of a trunk link detected?
Definition
Using CDP.
Term
command to view native vlan on all trunks.
Definition
sh int trunk.
Term
commands to view native vlan mismatches.
Definition
sh spann vl 1 int fa0/1 - look for PVID_Inc

show spann inconsistentports
Term
command to confirm if dtp is running on an interface.
Definition
sh dtp int fast 0/1
check if hello is "RUNNING" or "STOPPED"
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