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4
VLAN AREHops STEHops Backup CRF
---- ------- ------- ----------
Console> (enable) show port 2/1
Port
----- ------------------ ---------- ---------- ------ ------ ----- ------------
2/1
Port
----- -------- ----------------- ----------------- -------- -------- -------
2/1
Port
----- ---------- --------- ----------- ------------------------- ----------
2/1
Port
----- ---------- ---------- ---------- ---------- ---------
2/1
Port
----- ---------- ---------- ---------- ---------- --------- --------- ---------
2/1
Last-Time-Cleared
--------------------------
Wed Jul 26 2000, 19:44:05
Console> (enable)
Configuring 802.1Q Layer 2 VLAN Trunks
A trunk is a point-to-point link between one device, such as a router or a switch, and another device.
Trunks carry the traffic of multiple VLANs over a single link and allow you to extend VLANs across
an entire network.
IEEE 802.1Q is an industry-standard trunking encapsulation that is available on all Ethernet ports.
You can configure a trunk on a single Ethernet port or on an EtherChannel bundle. For more information
about EtherChannel, see the "Configuring EtherChannel" section on page 53.
Configuring an 802.1Q Trunk on Ethernet Ports
To configure an 802.1Q trunk, perform these tasks in privileged mode:
Task
Step 1
Configure an 802.1Q trunk.
Step 2
Verify the trunking configuration.
78-10164-03
enet
100500
1500
Name
Status
notconnect 4
Security Secure-Src-Addr
disabled
Status
Channel
Channel
mode
notconnect auto
not channel
Align-Err
FCS-Err
-
0
Single-Col Multi-Coll Late-Coll
0
0
Installation and Configuration Note for the Catalyst 4000 Layer 3 Services Module
-
-
-
-
Vlan
Level
normal
Last-Src-Addr
Neighbor
status
device
Xmit-Err
Rcv-Err
UnderSize
0
0
Excess-Col Carri-Sen Runts
0
0
Command
Console> (enable) set trunk mod_num/port_num
[on | desirable | auto | nonegotiate] dot1q
Console> (enable) show trunk
[mod_num/port_num]
Configuring the Module for InterVLAN Routing
-
0
0
Duplex Speed Type
full
1000 1000BaseSX
Shutdown Trap
IfIndex
No
disabled 12
Neighbor
port
0
Giants
0
0
0
51
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