Thursday, May 23, 2019

Layer 2 over ISP PPP not sending traffic

Hello, thank you for taking the time to read this.

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I am having an issue with a Spectrum ISP Point to Point link from one office to our HQ.

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It looks like this

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{Remote Site} [Catalyst 9300 Access Switch] --Trunk--> [ISP PPP Modem] --PPP--> {HQ Site}[ISP PPP Modem] --Trunk-->[Cat9300 ACI Fabric Core]

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The link comes up on both ends but is not passing traffic, the configuration on the Remote site Cat9300 is just a "switchport mode trunk" command, here is the connection on the fabric end: https://i.imgur.com/xZvaOEs.png

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I am not sure what I am missing for passing traffic? A Protocol, etc?

No routes but it should be layer 2 per my understanding?

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Thank you for any help!



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