On Wed, 21 Jun 2000, ���� wrote:
> hi,all:
> Recently we have an experiment.There are three pcs and two Cisco switches.The
>connection is as follows: pc 1 to switch 1 ,switch 1 to pc2 ,pc2 to switch2 and
>switch2 to pc3.pc1 and pc3 have one network card each,and pc2 has two network cards
>with each connected to one switch. we divide many vlans on the two switches,and set
>one of the port on each of the switch to the trunking mode(tagged vlan).And when we
>ping from pc1 to pc3 ,it shows time out.I know that there must be something to be set
>on the network card in order to make the tagged packet(802.1q) to pass.but how ? can
>you help me ?
If the switches aren't interconnected you must run a routing protocol or
bridging program on the PC that spans both switches to pass layer 3 or
layer 2 traffic over it- PC's don't route or bridge by default. If the
configuration is layer 3, then you should also ensure that the correct
routing information is present at each node.
If the switches are interconnected you need to make sure they're rurnning
a dynamic discovery protocol such as Spanning Tree, and that the
interconnection is on trunking ports or ports designated as uplink-type
ports. If this is the case, call Cisco or look at their Web site for
assistance.
If you're not clear on the concepts, you should talk to your Cisco
representative, generally they're a helpful company for support issues
outside of the standard "It's broken" calls where they're probably the
best in the industry.
Paul
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Paul D. Robertson "My statements in this message are personal opinions
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