Im having a problem getting VLANs set up between my 3640 and my DLINK DES-3226L .
We have 5 ISPs and a /30 between them then a /24 or /27 of additional IP space which our NAT box (FreeBSD server) takes and NATs out to our internal servers.
The only sub interface that works is F1/0.1 and that is because I have native set on it. If I remove it and put it on another interface it works fine. Is my router configuration OK and its a dlink problem or is my router config not correct?
Your description says 10Mbps, but your config says 100Mbps, which is right?
Further, do you have proper link negotiation set up between switches. Specifically how is link speed and duplex set on the DLINK? Generally, on Cisco switches, it is better to hard code the values if they can be properly set for a non-changing link, such as a switch to switch connection. On the other hand, non-Cisco switches may not always play well with Cisco and sometimes are more/better optimized for plug and play. You could possibly have speed and duplex mismatches on the DLINK switch. You have not posted the config, so it is hard to say.
Also, it might be useful to throw both switches into 100Mbps half duplex mode and pop a sniffer (via a 100mbps hub) in the middle of the mix and see what is happening. Capture the frames and see if the two are playing nicely with each other. Good luck,
First I would like to verify my understanding of part of what you said. I think that if you configure FastEthernet1/0.1 as native that it communicates ok with the DLINK. And if you change and configure FastEthernet1/0.2 as native then it works ok. And I am guessing that if you configure FastEthernet1/0.3 as native that it works ok.
If my understanding is correct than I suspect that the issue is a difference between the way your 3640 works and the way the DLINK works. I took a quick look at the manual for the DLINK. I believe that it does not have the same concept that Cisco does of a trunk in which the native VLAN is untagged and all others are tagged. If I understand the manual correctly the DLINK either tags all frames being forwarded out an port or it untags all frames being forwarded out the port.
Can you veify how the DLINK is configured?
In my quick look through the manual I did not see anything obvious about how to configure the DLINK so that it would interoperate with the 3640. My guess is that you should configure the DLINK to tag all frames and should then configure one subinterface on the 3640 for a non-existant VLAN and mark it as native. That way both devices will process VLAN tags on all frames.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...