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About ShawnHolcombe
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Feb 3 2020
9:25 AM
1 Kudo
Well half a day has gone by and so far the results are looking good! I appreciate all the suggestions and help. If anything changes I'll be sure to update the post. Shawn
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Feb 1 2020
11:39 AM
I'll find out this next week if it helped anything and I'll keep that in mind. Appreciate the help.
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Jan 31 2020
5:07 PM
Not sure if this is what you meant or how to fix the issue, but in order to leave DHCP alone I just swapped the IP's of the Meraki and Core switch for VLAN 77. Now clients will still get the 10.150.77.1 gateway, but that is now directly the core switch IP, bypassing the Meraki .254.
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Jan 31 2020
4:08 PM
Hey there, I see what you are saying I think. But what changes should I need to make on the Meraki switch as far as VLANS or routing is concerned? I assume the switch having it's management IP of 10.150.30.41 is fine. But does it not need the 10.150.77.1 interface in routing? Are you saying clients should use the 10.150.77.254 as their GW, not the .1?
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Jan 31 2020
6:56 AM
As far as DHCP, yes we have our DHCP server located back at the main campus on VLAN1 10.150.70.x. Clients are getting the switch IP 10.150.77.1 as their default gateway at the remote site. And on the switch, the default route is set to 10.150.77.254 which is the Core Switch IP.
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Jan 31 2020
6:52 AM
Thanks for the replies. Here's a quick diagram. VLAN 30 is a switch management vlan which in this case I also used as the transit VLAN between sites and MGMT Interface on the Meraki Switch. VLAN 77 was created on the Main Core Switch which has the 10.150.77.254 IP on the Interface. VLAN 77 is the subnet I want the remote site to have and use for clients. VLAN 120 is our VoIP vlan across all of our sites which is 10.150.120.0/23 If I left anything out or you need other info just let me know.
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Jan 30 2020
4:30 PM
Latency is 1ms between sites. And no, only clients in the .77.x range are at the remote location. That was the whole point in me separating out remote sites mainly to have them on their own subnets. I thought that was how i had it setup, with the unique vlan 77 at the remote site, and the vlan 1 at the main site, which is the main IP range 70.x/23. And the vlan 30 is the one we have for switch management in between. Is this not the ideal setup? The only difference when I change a port from vlan 77 to 1 at that site, is the trace route will show the switch IP for the GW there, and then hit our normal GW. So it would go: 10.150.77.30 -> 10.150.77.1 -> 10.150.70.1 -> then out the FW to the Internet. If I change someone to Vlan 1 it goes: 10.150.70.x -> 10.150.70.1 -> out FW to the Internet.
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Jan 30 2020
2:23 PM
Main site: Core Switch IP - 10.150.70.1 (which is also the default gateway for 70.x clients) interface Vlan1 ip address 10.150.70.1 255.255.254.0 interface Vlan77 description *** South Campus VLAN *** ip address 10.150.77.254 255.255.255.0 default route routes to our ASA firewall: ip route 0.0.0.0 0.0.0.0 10.150.70.2 Remote site: Correct, there is not a VLAN1 IP or Interface on the Meraki.
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Jan 30 2020
1:18 PM
So at the remote site, if I set someone to VLAN1 on the port they will get an IP from the 10.150.70.0/23 subnet. Normally their port would be set to VLAN77 and get a 10.150.77.0/24 IP. All VLANS are setup and stem off our Core switch at the main location. Between the sites it is Spectrum fiber, but yes it is an RJ45 ethernet handoff from their equipment to our switches. This was a new setup for me and asked Meraki how it should be setup, so I just assumed it was right 🙂 L3 is on, here's a screenshot of the routes: Remote location: Switch management IP: 10.150.30.41 - Native VLAN30 Main location: VLAN30 - VLAN Int 10.150.30.254 VLAN77 is basically the same setup. Remote location: 10.150.77.1 - Switch IP/GW for clients Main location: VLAN77 - VLAN Int 10.150.77.254 - GW and default route of the remote Switch. Hopefully I'm explaining this correctly.
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Jan 29 2020
11:33 AM
The remote site is a Meraki setup, which comes back to the main campus via dark fiber to our Cisco stack which then will flow through our ASA out to the Internet. We have other remote sites setup the exact same way, but with different VLANS: VLAN 75 - 10.150.75.0/24 - Meraki MS250 VLAN 79 - 10.150.79.0/24 - Meraki MS250 All I have to do is set someone's port to manually be VLAN1 instead of one of the VLANS created for the remote side, and everything works without issue.
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Jan 29 2020
7:26 AM
Hello, First time posting here and I am hoping to get some more insight on the strange issues we've been seeing. I've looked through some of the posts and can relate to some of the STP weirdness you all are having. I'll try to provide as much detail and info up front. At this remote site (we have others doing the same exact thing) we run an EMR application. When clients are on their default VLAN77 they are having application hangs/crashes and slowness. If I manually swap a port to use VLAN1 instead of VLAN77, the issues go away and the application runs normally. The application is installed on PC's, but is hosted elsewhere so it does route out to the Internet. I'm by far no Networking expert, but the setup seems pretty basic to me. I've gone through and changed settings on ports and nothing seems to help as long as they are on VLAN77. Another thing to note is that we are seeing duplicate and triple ACK's when looking at packet captures. Appreciate any help, and if any other info is needed just let me know. Main Site Connection Info Remote Site Switch: Cisco 2960XR 100Mb ELAN - Dark Fiber Switch: Meraki MS250-48LP Transit/Native VLAN: 30 Allowed VLANS: All Port: Gi 1/0/46 - Trunk Port: 48 - Trunk Core Switch: Cisco 3750X VLAN77 - 10.150.77.0/24 VLAN1 - 10.150.70.0/23 VLAN120 - 10.150.120.0/23 (VoIP) VLAN77 - 10.150.77.0/24 VLAN120 - 10.150.120.0/23 Default Route: 0.0.0.0 - 10.150.77.1 Connected Devices: 4 - Meraki MR33 AP's Cisco VoIP Phones & PC's
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