04-25-2013 12:50 PM - edited 03-07-2019 01:02 PM
Hello,
I have separate cisco 3750 switches one is a 48 port and one is a 24 port switch.
I have the 48 port switch setup on a vlan.
interface Vlan95
ip address 192.168.95.1 255.255.255.0
!
then i have another 24 port switch setup as
interface Vlan55
description EMS DMZ
ip address 192.168.55.254 255.255.255.0
!
I want everything on vlan 55 to be able to talk to the 95 network on switch 1...the 48 port switch.
what is the best way going about doing this.
should i create another vlan on the 24 port switch as a 95 network to be able to talk to ether other.
interface GigabitEthernet1/0/18
switchport access vlan 55
switchport mode access
thanks for the help
Solved! Go to Solution.
04-25-2013 12:54 PM
Connect the two switches using a trunk port. Something like this:
3750 48 port
interface gi1/0/24
switchport trunk encap dot1q
switchport mode trunk
speed 1000
duplex full
!
ip routing
3750 24 port
interface gi1/0/24
switchport trunk encap dot1q
switchport mode trunk
speed 1000
duplex full
!
ip routing
04-29-2013 10:05 PM
you need to type command # ip routing.. command in order to run inter vlan traffic.
04-25-2013 12:54 PM
Connect the two switches using a trunk port. Something like this:
3750 48 port
interface gi1/0/24
switchport trunk encap dot1q
switchport mode trunk
speed 1000
duplex full
!
ip routing
3750 24 port
interface gi1/0/24
switchport trunk encap dot1q
switchport mode trunk
speed 1000
duplex full
!
ip routing
04-25-2013 12:58 PM
ok then i don't need to assign a vlan to each since they on trunked together...
sorry I am new.
04-25-2013 02:09 PM
Yes trunk port will carry the VLAN's unless you restrict certain VLAN's in your case it sounds like a pretty simple setup. You will need to assign the ports to the specific VLAN when you connect end devices though.
04-25-2013 06:14 PM
Hi Phil,
Since you are using different vlans that subnets needs to be preset if you want it to be communicated between each other.
If you just configure the vlans and apply to the access ports and allowed it over the trunk ports it will not get communicated between each other.
1- Configure the Vlans and allow it on the trunk interface.
2- Assign the vlans to the respective access ports.
3- Have the following subnets range on both the switches. (For example you need to have both the vlans on 2 switches with respective ip subnet ranges.)
4- Once you have them you should be good to go.
I have setup this on Packettracer let me know if you would like to have a look.
HTH
REgards
Inayath
*Plz rate all usefull posts.
04-26-2013 05:48 AM
Ok so I have the packet tracer up. Now I need to create new vlans on each switch?
04-26-2013 09:35 AM
Hi Phil,
I have configured everything on this devices on the pkt tracer file attached.You can check the configuration and connectivity.
HTH
Regards
Inayath
*Plz rate al uesfull posts.
04-29-2013 12:59 PM
I cannot ping each device... 95.10 cannot ping 55.10 and vise versa.
04-29-2013 08:37 AM
Thank you for the rating Phil were you able to get this up and running?
04-29-2013 01:00 PM
No Problem. I plan to give it a try this week.
04-29-2013 05:15 PM
HI Phil,
Were you able to use the Pkt tracer file?
Regards
Inayath
04-29-2013 05:19 PM
yes I opened it up but could not ping the computers. the 55.10 could not ping 95.10
Phil
04-29-2013 05:35 PM
Hi Phil.,
I just tested again and its all working end to end. Kindly open the file login to all the devices.
192.168.95.10 PC0----Switch 0=========Switch 1--PC1( 192.168.55.10 )
'PC0>ping 192.168.55.10 ----------------> PC to PC is pinging.
Reply from 192.168.55.10: bytes=32 time=4ms TTL=128
PC1>ping 192.168.55.10 ----------------> PC to PC is pinging.
Reply from 192.168.55.10: bytes=32 time=4ms TTL=128
PC0>
Switch0>
Vlan55 192.168.55.253 YES manual up up
Vlan95 192.168.95.1 YES manual up up
Switch0>
Switch1#
Vlan55 192.168.55.254 YES manual up up
Vlan95 192.168.95.2 YES manual up up
Switch1#
Kindly check the same and revert back if you face any issue.
HTH
Regards
Inayath
04-30-2013 12:38 PM
Thanks Inayath for the Pkt tracer, I just tested for myself and its working fine.
Was looking for somthing but this got some help for me.
Regards
Fari.
04-29-2013 10:05 PM
you need to type command # ip routing.. command in order to run inter vlan traffic.
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