Monday, July 26, 2021

MPLS+internet provider forcing to use only 1 port

Our provider is using ASR920s and does not want us to use more than 1 physical port on the device. The port is 10G SFP. They are saying they can't provide Internet and MPLS on multiple ports because there's an issue with shaping multiple ports on the ASR920.

We have a Fortigate for internet traffic and an ISR4431 with boost license for MPLS. Everything is redundant including the circuits (they have 2 ASR 920).

The 1 physical port constraint forced us to use a layer 2 switch (NX3000) in between the provider ASR and our devices. Now I want to add bandwidth capacity on the ISR4431, I see now other way than configuring Layer 2 port-channel and use vlans. I am currently using layer 3 interfaces on the ISR. I don't know how much this will screw the QOS config and don't know If it will be better to attach the QOS to the L2 port-channel or the vlan interface. Do you have other scenario to suggest ?



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