Hot Downloads

×

Notice

The forum is in read only mode.
Welcome, Guest
Username: Password: Remember me
  • Page:
  • 1
  • 2

TOPIC: Inter VLAN communcation

Inter VLAN communcation 10 years 3 months ago #25555

  • prabhuk
  • prabhuk's Avatar Topic Author
  • Offline
  • Frequent Member
  • Frequent Member
  • Posts: 42
  • Thank you received: 0
Hi all,

As per my knowledge, for inter VLAN communication a router or L 3 switch is must....?

Is there any other way for Inter VLAN communication without router or L3 switch...?

Thanks
prabhu

Re: Inter VLAN communcation 10 years 3 months ago #25557

Indeed, for inter-VLAN communication Layer-3 routing is necessary

Re: Inter VLAN communcation 10 years 3 months ago #25565

  • S0lo
  • S0lo's Avatar
  • Offline
  • Moderator
  • Moderator
  • Posts: 1577
  • Karma: 3
  • Thank you received: 7
Yup, I second Chojin's, you need L3 routing.

May I ask what are you looking for ?

Re: Inter VLAN communcation 10 years 3 months ago #25582

  • prabhuk
  • prabhuk's Avatar Topic Author
  • Offline
  • Frequent Member
  • Frequent Member
  • Posts: 42
  • Thank you received: 0
Hi solo,

I have one senario.

There are two switches connected by cross cable. All the switch ports are in access mode.

In the Switch1 the first port and the port connected to next switch are in VLAN 2.

In the Swtich 2 the last port and the port connected to the switch1 are in VLAN 10.

Now one PC1 has connected to 1st port of the Switch1(VLAN 2).

PC2 has connected to the last port of the Switch2 that is associated VLAN10.

Now the questions are

1) Can PC1 ping to PC2 ..?
2) If not ,in which port the packet will drop...?

Note that all the ports in both switches are in acces mode.

Thanks
Prabhu k

Re: Inter VLAN communcation 10 years 3 months ago #25583

I'll have a go at your question...

Like others have mentioned you'll require a router preferably a 3550 to route between vlans 2 and 10 in order for PC1 and PC2 to ping each other. Also the ports to which the cross-over cable is connected on both switches MUST be configured as Trunk (switchport mode trunk) and not access.

Apparently you can have two NICs on one of the PCs/Server and configure them as default gateways for both Vlans. See the vlan tutorial on the website (classic solution).

Hope this helps!

Re: Inter VLAN communcation 10 years 3 months ago #25584

Although this isn't a recommended setup, it will work. Here's why.

When a frame from PC1 enters SW1, it is marked as VLAN 2. The switch compares the destination MAC to its CAM and forwards it out the appropriate VLAN 2 port facing SW2. The frame isn't tagged, because the port is configured as an access port.

SW2 receives this untagged frame on its access port, and marks it as VLAN 10. It performs a CAM lookup and forwards the frame out the appropriate VLAN 10 port.

Remember, VLANs are only locally significant to a switch.
  • Page:
  • 1
  • 2
Time to create page: 0.161 seconds

CCENT/CCNA

Cisco Routers

  • SSL WebVPN
  • Securing Routers
  • Policy Based Routing
  • Router on-a-Stick

VPN Security

  • Understand DMVPN
  • GRE/IPSec Configuration
  • Site-to-Site IPSec VPN
  • IPSec Modes

Cisco Help

  • VPN Client Windows 8
  • VPN Client Windows 7
  • CCP Display Problem
  • Cisco Support App.

Windows 2012

  • New Features
  • Licensing
  • Hyper-V / VDI
  • Install Hyper-V

Linux

  • File Permissions
  • Webmin
  • Groups - Users
  • Samba Setup