Solved

Apple screen sharing different vlans

Posted on 2011-02-28
12
2,319 Views
Last Modified: 2012-05-11
The network I'm working on was once one big VLAN - everyone was on the same broadcast domain.
This included an apple lab that had several mac mini systems setup with Screen Sharing active.

Once the network was VLAN'd (separating the main user community from the lab system) - Screen Sharing to these lab Macs became unavailable.

A mac user needing access to the lab mac could still VNC in (i.e. VNC://labmac) but could no longer get to the Mac via Screen Sharing from the Finder.

I understand that Apple Remote Desktop will not work across VLANs but is Screen Sharing affected in a similar manner or is there some modification within the VLAN or lab ports these Macs are connected to in order to reactivate Screen Sharing?

The network is connected to a Cisco 4510 switch - Layer3 - which handles the VLANs/routing

0
Comment
Question by:techjunky
  • 4
  • 3
  • 3
  • +1
12 Comments
 
LVL 32

Expert Comment

by:nappy_d
ID: 35003483
You will need a router to handle traffic between your VLANs. Without this, you will not be able to see traffic on the other VLANs.
0
 
LVL 39

Expert Comment

by:Aaron Tomosky
ID: 35003885
Last I checked apple stuff used bonjour which uses mdns multicast dns. I have a sonicwall that does some magic across subdomains so that multicast looks like it comes from that subdomain instead of the original one. This is how I got it to work. I don't know if cisco has something like this or what it's called.
0
 
LVL 39

Expert Comment

by:Aaron Tomosky
ID: 35003896
In the sonicwall it's called "ip helper" and only the enhanced os has it.  If that helps.
0
Portable, direct connect server access

The ATEN CV211 connects a laptop directly to any server allowing you instant access to perform data maintenance and local operations, for quick troubleshooting, updating, service and repair.

 

Author Comment

by:techjunky
ID: 35010952
It's not a matter on not seeing across the VLANs - this Layer3 Cisco switch does a perfect job of routing/switching without requiring an additional router in the max.

The VLANs can exchange data amongst each other without a problem - this is true for the PCs in the lab as well as the Macs - it's only this specific part of the Mac - screen sharing - which seems to not be able to cross the VLAN

I currently run the IP Helpers on my VLANs for distributing DHCP addresses via multiple scopes (based on vlan) from one server - but I don't see where they would help in this specific situation.

I may be limited to placing those lab macs back on the same VLAN the production environment is on.
0
 
LVL 32

Expert Comment

by:nappy_d
ID: 35016399
OK, so you believe that inter vLAN routing is working. What subnet is the between the two vLANs? Are they the same?
0
 

Accepted Solution

by:
techjunky earned 0 total points
ID: 35021549
Different subs.


Lab is on /24

Production is on /21

Curious - I should change the lab to the /21 sub - remaining on its current vlan
Will give that a shot shortly
0
 
LVL 32

Expert Comment

by:nappy_d
ID: 35022626
Yep, that should be your fix.  
0
 
LVL 39

Expert Comment

by:Aaron Tomosky
ID: 35022900
Im no expert on vlans, just learning really.  I thought vlans had to be on different subnets?
0
 
LVL 32

Expert Comment

by:nappy_d
ID: 35023192
No, you can have many subnets on the same LAN. The computers will only broadcast to others on the same subnet.
0
 

Author Comment

by:techjunky
ID: 35223107
Point awarded (a little late) to nappy_d

Please close this questions successfully.
0
 
LVL 69

Expert Comment

by:Qlemo
ID: 35275247
This question has been classified as abandoned and is being closed as part of the Cleanup Program. See my comment at the end of the question for more details.
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Cisco Router DMZ 5 88
2960 and a VLAN id of 1237 2 66
esx multi vlans 3 91
Connecting to CISCO 4402 WLC 3 44
I see many questions here on Experts Exchange regarding switch port configurations and trunks. This article is meant for beginners in the subject to help to get basic knowledge about Virtual Local Area Network (VLAN (http://en.wikipedia.org/wiki/Vir…
Are you looking to clear some space on your phone for the latest iOS 8 update? Did you switch to Spotify so you no longer need to keep music native on your phone? Run out of space for taking photos while in the middle of vacation? Sometimes the quic…
Users will learn how to set proper sequence settings, scale images, paste attributes, add transitions, fades, and music. Open up Final Cut Pro 7 and Create a new Project: Set the Sequence Settings. a) Click File > Easy Setup > Format > Apple ProRe…
This Micro Tutorial hows how you can integrate  Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease. The following video show how to bind OSX Mavericks to …

766 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question