CBS350

[Robros]

Hello. I bought this switch and got 5g fiber from att, wired the house with Cat6A and have all Jack's and patch cables Cat6A. Gateway receives 5g speed but I am unable to get ethernet going.

While I can reach the gateway and switch via Wi fi I seem to not get any wired connectivity.

The switch shows port activity as "down" in ports settings for all 16 ports.

What am I doing wrong.

I am totally biting more than I can chew.

[Kasun Bandara]

can you share simple sketch of your devices and how they connected.

[Robros]

Hello Kasun. Thank you for replying. Could these pictures help? The fiber
optic gateway is not there but I will take a more current picture tomorrow
with the gateway hooked up on top of the console. All patch cables/jacks are
cat6A shielded and all wall jacks are also cat6a shielded. The gateway
receives 5Gb but nothing gets to the wall jacks.

[Kasun Bandara]

hi, i cannot see any attachments.

[Robros]

 

[Robros]

 

[Kasun Bandara]

you are uisng all 10G copper lines right?

[Robros]

The blue wires are all cat8 supporting up to 40G - Screened Shielded Twisted Pair (SSTP).

[Robros]

Hello again. I made some progress but still can't get ethernet to work.
I have solved the double routing issue by setting the ATT gateway on IP passthrough mode. The gateway now shows the switch on a WAN IP (passthrough) address. The switch receives all traffic from the gateway but the ports aren't letting the traffic go through. The port I am doing the testing through has been set as 'trunk'. 
I am positive there is an additional set up for the switch to operate correctly but I don't have enough knowledge to try tweaking stuff. Could the issue be in the IPv4 routing? The DNS set up? When I plug my laptop directly to any of the ports on the cisco switch laptop tries to connect to the internet but gets stuck on "identifying ethernet". Please advise.

[KJK99]

@Robros 

Do not put your ATT gateway into the passthrough mode. Although your CBS switch is capable of routing, it is not a substitute for an Internet gateway. The port on the switch the gateway is connected to should be an access port, not a trunk. Trunk ports are for connecting VLAN-aware devices. I do not think your ATT gateway is one of them. You can easily make the gateway and the switch work together by simply resetting them to their factory default configurations. Make it simple at the beginning. If you have some special requirements, modify the configuration after you verify the wiring.

[Robros]

Thank you for the reply, Kris.
The port on the switch the gateway is connected to IS an access port. The trunk port I referred to was the one connection the switch to my laptop. I am utterly confused. A local cisco dealer could not make them work together and it is actually ATT that recommends the passthrough so that their ATT gateway works in tandem with a switch/router installed by the owner.

Tomorrow I will once again factory reset both machines and see if it is true that they can easily work together. Although the cbs is unmanaged.