topic vlan configuration problem in Switching

vlan configuration problem

avswamy — Tue, 05 Mar 2019 21:29:20 GMT

while configuring 2924xl as port based fixe d configuration, the packets are not forwarding to the port 1 where i need to forward the packet to port 1.

I have created all 24 vlan's and created one as trunk port and added all vlans to it.

Can any one help me on this.

Re: vlan configuration problem

spremkumar — Tue, 26 Dec 2006 12:05:04 GMT

Hi Swamy

Are you trying to connect the trunk to an external device like Router or a L3 switch ?

Also can you revert on whats the exact problem you are facing up over there ...

if possible do post out the config here..

regds

Re: vlan configuration problem

mahmoodmkl — Tue, 26 Dec 2006 12:07:17 GMT

u r problem is not clear.can u alloborate it.

Thanks

Mahmood

Re: vlan configuration problem

chercom2006 — Tue, 26 Dec 2006 12:11:06 GMT

avswamy, Can you post your config? Did you config your vlan via vlan database? Are all of the other ports in separate vlans? Is port 1 your trunk port? Are you looking at the port's traffic statistics to determine that the frames are not getting to port 1?

Re: vlan configuration problem

avswamy — Tue, 26 Dec 2006 12:12:02 GMT

interface FastEthernet0/1

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 1,101-106,1002-1005

switchport mode trunk

no cdp enable

interface FastEthernet0/2

switchport access vlan 102

interface FastEthernet0/3

switchport access vlan 103

interface FastEthernet0/4

switchport access vlan 104

interface FastEthernet0/5

switchport access vlan 105

interface FastEthernet0/6

switchport access vlan 106

---------------------------------

here is the config and i am trying to communicate with server from the lan, the 1st port i want to communicate with server, at the same time i don't open the communications between systems(other ports).

Re: vlan configuration problem

senglobe0907 — Tue, 26 Dec 2006 12:15:48 GMT

can you send us the config details...

-senthil

Re: vlan configuration problem

spremkumar — Tue, 26 Dec 2006 12:16:53 GMT

Hi Swamy

Which is the other end connecting to the Fastethernet 0/1 of your switch ?

Is it connecting to your server or to any other N/W devices ?

regds

Re: vlan configuration problem

avswamy — Tue, 26 Dec 2006 12:20:40 GMT

this is the first managed switch and the 1st port is connected to a server and all the remaining ports are connected to work stations.

Re: vlan configuration problem

mahmoodmkl — Tue, 26 Dec 2006 12:41:25 GMT

Where u r doing u r intervlan routing.I think u connected the server to the trunk port.If u want to communicate between u r clients n server u need to go through a layer 3 device.

i dnot see any intervaln routing information.

Thanks

Mahmood

Re: vlan configuration problem

chercom2006 — Tue, 26 Dec 2006 12:43:08 GMT

Did you configure the vlan via vlan database or in global config? Next, I would recommend that your turn on spanning-tree portfast on all of your ports-because all of them are connected to hosts-to reduce connectivity delay. On port 1 fa0/1 I would do a 'sho int fa0/1 swithport' to determine if the port is operating in the correct mode (access via trunk). I would look at my traffic counters to see if frames are actually begin received (output) on that port..Lastly I would look at the trunk configuration on the server. You may consider turning off DTP negoitations as well.

Re: vlan configuration problem

avswamy — Tue, 26 Dec 2006 13:28:03 GMT

If with out layer3 switch, the layer2 configuration will not work means cisco then trouble some to me, and I have to check the other companies like cabletron for the same.

Where I have configure N number of switches on cabletron, which can be configured with out any layer 3switch for communicating with server from clients in the local lan.

Re: vlan configuration problem

froggy3132000 — Tue, 26 Dec 2006 13:45:09 GMT

This has nothing to do with cisco. That is basic networking. There has to be a router in this picture.

Re: vlan configuration problem

chercom2006 — Tue, 26 Dec 2006 16:00:00 GMT

In this scenario it appears as though he is trying to run 802.1Q the server, allowing all users access to the server but no access to one another.

Re: vlan configuration problem

schm196 — Tue, 26 Dec 2006 21:06:50 GMT

There are two solutions to this scenario:

1. The clean solution is to have an upstream router connected to Fa0/1 to perform Inter-VLAN routing. You would then define a separate VLAN for your server and connect the server on a port configured for this VLAN.

2. If I understand correctly, your server is directly connected to Fa0/1. In this case, you need to configure a multi-access port instead of a trunk port. Note that the use of multi-access ports and trunk ports on the same switch is exclusionary (one or the other only, not both). You would then need a NIC card and a driver for this NIC card on your server that supports VLAN configuration.