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KAW22

4 Posts

8736

July 6th, 2007 08:00

Trunking between 2x 2724

Hello,
 
If anyone could help me with a few pointers for this it'd be greatly appreciated.
 
The switches are not in use and have been reset to factory default.
 
I have connected them together via a fibercable in port 23 on both.
They are both in Managed Mode.
 
This is what I've tried:
LAG: I've added both port 23 to LAG1
VLAN: I've added both port 22 to VLAN100
I have a PC1 in port 22 on SW1 with ip 192.168.2.101 & PC2 in port 22 on SW2 with ip 192.168.2.102.
What am I missing here?
 
Thank you,
kaw

Crzywolf

93 Posts

July 6th, 2007 14:00

LAG stands for Link Aggregation Group.  You need to remove the port from that LAG.  Set the PVID of all of the ports you want to be a member of VLAN 100 to 100.  It should then work.  The key is the PVID.

KAW22

4 Posts

July 9th, 2007 06:00

Thank you Crzywolf, it works. :)
 
Now I've run into a new problem however;
If I want port 21 on both switches to have vlan101 and also be connected through combiport23, how would I do this?
 
Thank you.

KAW22

4 Posts

July 9th, 2007 07:00

Just to show how I've set it up now:
 
SW1:
Port21: VLAN101 (untag) - PVID:100
Port22: VLAN100 (untag) - PVID:100
Port23: VLAN100 (untag) / VLAN101 (untag) - PVID:100
 
SW2:
Port21: VLAN101 (untag) - PVID:100
Port22: VLAN100 (untag) - PVID:100
Port23: VLAN100 (untag) / VLAN101 (untag) - PVID:100
 
I have a computer plugged in each Switch and this is what works and what doesn't:
If both in port22 they can ping eachother just fine.
If both in port21 they cannot ping eachother.
 
I've tried to set all the ports to tag, but afterwards nothing works.
I've also tried to set port21/22 only to tag, but still no luck.
In port settings I tried to use the admit tag only as well, but this made no difference.
 
 
Any ideas?
Thank you.


Message Edited by KAW22 on 07-09-2007 03:39 AM

Crzywolf

93 Posts

July 9th, 2007 17:00

No dude, like this. 
 
SW1:
Port21: VLAN100 (untag) - PVID:100
Port22: VLAN101 (untag) - PVID:101
Port23: VLAN100 (untag) / VLAN101 ( TAGGED) - PVID:100
 
SW2:
Port21: VLAN100 (untag) - PVID:100
Port22: VLAN101 (untag) - PVID:101
Port23: VLAN100 (untag) / VLAN101 ( TAGGED) - PVID:100
 
Review:
Port 21 is a member of VLAN 100 only.
Port 22 is a member of VLAN 101 only.
Port 23 is a member of both VLAN 100 & 101; 100 is the native VLAN where untagged traffic is automatically dumped into and 101 is Tagged going across to the other end where it too is Tagged. 
 
Summary:
PC on port 21 on SW1 can talk to only a PC on port 21 on SW2.  PC on port 22 can talk only to a PC on port 22 on SW2.  When packets leave port 23 on SW1 for VLAN 101 a tag is added and when it is received by SW2 on port 23, it will read the tag, strip it and place the packet into VLAN 101.  All untagged traffic will automatically get dumped into VLAN 100. 

KAW22

4 Posts

July 10th, 2007 06:00

Hello Crzywolf, thanks alot for your reply, it's greatly appreciated! :)
 
Everything works now. ;)

Message Edited by KAW22 on 07-10-2007 07:52 AM

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