New Member
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6 Messages
CBS350 switch issue
Hello. I read as much as I could and tested as much as possible on how to do the above mentioned set up and I feel I am in the last mile trying to get ethernet going.
Got a 5G fiber optic line from ATT and set up the BGW320 as IP-passthrough so that I could use my own router, a cisco switch CBS350. I strictly followed all steps detailed in prior threads (disabling firewalls, setting allocation mode, etc) and after rebooting the gateway first and then the switch I can see that ATT gateway lists the cisco router on its own wan IP address as passthrough. The switch itself appears to transfer data (green lights flashing on all corresponding ports) but no ethernet goes to any computer. When plugging a laptop to the switch's ethernet ports or even to the ethernet wall jacks, laptop shows "ïdentifying ethernet" but can't really connect. All correct hardware is in place: cat6a wires, cat6a jacks, cat6a dongles, etc. But I have also tested gateway/switch set up with regular cat6 wires/cat6 dongles on gateway 1Gb ports as well the 5Gb port with the same end results.
Perhaps there is something else I need to configure at the switch level? Truth be told, I am far far far from an expert or an experienced person in networking. Could be an issue with IPv4 config, DNS settings, IPv4 static route, etc? I would greatly appreciate a bit of help and thank everybody in advance.
browndk26
ACE - Professor
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5K Messages
2 months ago
No reason to put the gateway in ip passthrough to a switch. Factory reset the gateway. Connect the switch to a gateway port. You should get Ethernet connections through the switch. Just curious as to why you have 5g service but are connecting to a 1g switch.
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ShenT
New Member
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6 Messages
2 months ago
Hi. Thank you for answering. The CBS350 switch is a 10G *managed* switch so it requires configuration. If I connect the switch to the a reset gateway there will be 2 routers trying to route traffic. That's what I did first.
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browndk26
ACE - Professor
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5K Messages
2 months ago
Your setup is gateway, switch and then a router (what model router?). Normally you place the gateway in ip passthrough to the router, then connect the router to the switch. Then all other devices connect to the switch.
I don’t see in the specs 10g over Ethernet. Just via sfp ports.
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ShenT
New Member
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6 Messages
2 months ago
Gateway > switch > patch panel > house (ethernet wall jacks). The cisco switch is the router. Right now, the gateway sends all traffic to the switch (router) which is on a wan ip address. There is something about the ports on the switch that is blocking the traffic.
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browndk26
ACE - Professor
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5K Messages
2 months ago
Factory reset the gateway and switch. Then test to see if the devices connected to the wall ports connect. If they do, then set up the switch as you desire. VLANs, etc.
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ShenT
New Member
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6 Messages
2 months ago
Thanks. Yes, to all of that. Resetting, rebooting made no difference. I am also trying to get help on the Cisco forum as I am quite sure there is some tweaking to the switch settings that is required. Thank you, again.
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ATTHelp
Community Support
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211K Messages
2 months ago
Hi there ShenT, we can point you in the right direction to get help with setting up your switch.
Reach out to the team at our paid service, HomeTech. They provide 24/7 assistance with a range of networking matters, including setting up third party equipment.
If you need help with anything in the future, we'll be here. Thank you for visiting the AT&T Community Forums.
Aminah, AT&T Community Specialist
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ShenT
New Member
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6 Messages
2 months ago
Hello Aminah and thank you. I took a look at the HomeTech service but it doesn't look like a place where I can get "networking" expertise. I am sorry. More like installtion of TVs or hooking up a wi fi router. I am under the impression that making this switch work requires much higher capabilities. Does the HomeTech team include network engineers, if I may ask?
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dave006
Scholar
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3.7K Messages
2 months ago
@ShenT
As @browndk26 mentioned your Cisco CBS350 is only a managed switch and not a router / switch. Do you happen to have the CBS350 Series 24 Port Managed Switch?
You don't need IP Passthrough. You just need to configure your switch standalone with a computer connected to the switch since it's Default IP is 192.168.1.254. This also happens to be the IP for your AT&T Gateway (router).
All you need to do is either follow the Cisco setup guide to pick an IP in the 192.168.1.0 network like 192.168.1.1 and then allow your CBS 350 to use it's default 192.168.1.254.
Use this link to configure it: https://www.cisco.com/c/en/us/td/docs/switches/lan/csbms/CBS_250_350/Administration-Guide/cbs-350/get-to-know-your-switch.html#ID-00000275
Dave
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ShenT
New Member
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6 Messages
2 months ago
Well... thank you, dave006. Since you are confirming browndk26 suggestion I will factory reset everything and give it another try. On my first attempt, no passthrough, the switch did pick up an IP in the 192.168.1.xx range while the gateway, as you mentioned, use it's default. But ethernet wasn't available. Will try again. My switch is CBS350-16XTS Managed Switch | 8 Port 10GE | 8 Port 10G SFP+ and that section in link is not really about "configuring" the switch, just how to connect to the switch via a browser.
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