TRUNK and TRUNK polymerization connector

TRUNK is interpreted as "link aggregation", it is an important way to expand the bandwidth and link redundancy. TRUNK (Trunking) function is to bring together the physical port is formed on a plurality of physical ports logical switches, a plurality of links in the same aggregation group may be regarded as a logical link. Link aggregation is achieved converging a logical link to increase the bandwidth by a plurality of links; Meanwhile, another port redundancy various members of the same aggregation group, improving connection reliability.
I am here is to simplify the use of the command, the command to see the full version of the three-tier exchange VLAN check out.
Vlan divided now connected, TRUNK link next to FIG.

1, PC1, IP address

2, configure the IP address of PC2

3, arranged PC3 IP address

4, configure the IP address PC5 of

5, router sw1
closed routing function
creates VLAN10, VLAN20
access port f1 / 0, configure the VLAN mode, VLAN10 port assigned to
the access port f1 / 1, VLAN mode configuration, the ports are assigned to VLAN20
access port f1 / 2, select the package type of interface, the interface is set to the mode Trunk

view sw1 router VLAN configuration

view of Trunk port router sw1 configuration

6, the router sw2
off routing function
creates VLAN10, VLAN20
access port f1 / 0, configure the VLAN mode, the port assigned to VLAN10
access port f1 / 1, configured VLAN mode, the port is assigned to VLAN20
access port f1 / 2, selected package type interface, Trunk interface mode to

view the router VLAN configuration sw2

See Trunk port configuration of the router sw2

7, connectivity test PC1, PC2 and PC3


can be drawn on by the use of the Trunk interface may be implemented between two routers, the same VLAN as the PC can communicate with each other.
. 8, the polymerization TRUNK
disposed between two routers polymerization TRUNK
1) on the router sw1
an interface f1 / 3, the port to trunk mode is selected dot1q encapsulation protocol trunk port
opening between two Ethernet lines channel

2) on the router sw2
an interface f1 / 3, the port to trunk mode is selected dot1q trunk interface protocol encapsulation
opening Ethernet channel between the two lines

3) test PC1 and PC3, PC2 and PC5 of communication status


of the polymerization can be seen Trunk added successfully.