Re: [WISPA] vlans
Travis, Are you routing or bridging between between the clients, APs, and your router? It would probably be worth doing packet captures and actually seeing what the traffic is. If you are routing between the AP and the router, then it is very unlikely that your problem is broadcast related. Unless you have a _lot_ of CPEs that are bridged back to the router and/or don't route on the CPE, I would be not really think that ARP is really a problem. Broadcast storms generally are the result of 3 things, off the top of my head: 1. having a loop on your layer 2 (Ethernet) (shouldn't be an issue) 2. _way_ too many devices in a layer 2 broadcast domain (may be an issue) 3. Bad and/or malicious network programs generating too much broadcast traffic. If you control the CPE and you route on the CPE, then this can't really be an issue. You are correct on the implementation of VLANs; you will also need to create virtual interfaces for each vlan on the router and setup IPs and routing for each virtual interface. Feel free to ping me offline if you need more assistance. Thanks, Clint Ricker -Kentnis Technologies On Nov 18, 2007 11:47 PM, Ryan Langseth [EMAIL PROTECTED] wrote: That should, now in order to do that you will need to have a separate subnet for each AP and the customers off of it (I believe). Have you done any packet sniffing to see if there is a lot of ARP requests? How many hosts do you have off of that tower? Ryan On Nov 18, 2007, at 10:02 PM, Travis Johnson wrote: Hi, I will be the first to admit that I know very little about VLANs. I understand the concept and even how to configure them (somewhat). Currently our entire network is fully routed and switched without any VLANs. However, we are starting to see a problem on larger tower locations where we have 6-10 AP's all plugged into the same ethernet switch, and then into a router before it gets to our backbone. I think what we are seeing are ARP broadcast storms, etc. and it affects all the AP's on that switch at the same time. Ping times to customers and the AP's go up to 1500-2000ms, yet we never see the traffic on the router itself. My question is this: Could I enable VLANs on the switch, and put each AP into it's own VLAN and then make the port the router is plugged into the trunk port? Would this stop the broadcasts from affecting other AP's on that switch? Is there a better solution? What is everyone else doing? Travis Microserv WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
RE: [WISPA] vlans
Behalf Of Russ Kreigh snip A temporary, or transitional step would be to replace the switch with a Mikrotik, connecting each AP's ethernet into it. And implement port filters to prevent ARP between ports. [Mac says] I don't think its ARP issues, but I think Russ has an excellent idea. I would first run Ethereal on that segment of the network to confirm the issue at hand. Let us know what you see - - - it may be just rebroadcasts/retransmits from bad signal levels at the AP - - YOU BAD BAD BOY!! :) Mac WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
[WISPA] vlans
Hi, I will be the first to admit that I know very little about VLANs. I understand the concept and even how to configure them (somewhat). Currently our entire network is fully routed and switched without any VLANs. However, we are starting to see a problem on larger tower locations where we have 6-10 AP's all plugged into the same ethernet switch, and then into a router before it gets to our backbone. I think what we are seeing are ARP broadcast storms, etc. and it affects all the AP's on that switch at the same time. Ping times to customers and the AP's go up to 1500-2000ms, yet we never see the traffic on the router itself. My question is this: Could I enable VLANs on the switch, and put each AP into it's own VLAN and then make the port the router is plugged into the trunk port? Would this stop the broadcasts from affecting other AP's on that switch? Is there a better solution? What is everyone else doing? Travis Microserv WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] vlans
That should, now in order to do that you will need to have a separate subnet for each AP and the customers off of it (I believe). Have you done any packet sniffing to see if there is a lot of ARP requests? How many hosts do you have off of that tower? Ryan On Nov 18, 2007, at 10:02 PM, Travis Johnson wrote: Hi, I will be the first to admit that I know very little about VLANs. I understand the concept and even how to configure them (somewhat). Currently our entire network is fully routed and switched without any VLANs. However, we are starting to see a problem on larger tower locations where we have 6-10 AP's all plugged into the same ethernet switch, and then into a router before it gets to our backbone. I think what we are seeing are ARP broadcast storms, etc. and it affects all the AP's on that switch at the same time. Ping times to customers and the AP's go up to 1500-2000ms, yet we never see the traffic on the router itself. My question is this: Could I enable VLANs on the switch, and put each AP into it's own VLAN and then make the port the router is plugged into the trunk port? Would this stop the broadcasts from affecting other AP's on that switch? Is there a better solution? What is everyone else doing? Travis Microserv WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
