Can Cisco 4351 router go beyond 400 Mbps WAN Internet?
https://community.cisco.com/t5/routing/can-cisco-4351-router-go-beyond-400-mbps-wan-internet/td-p/4423058
WEB06-24-2021 09:13 AM. Assuming your 500 Mbps is duplex, you could need up to gig aggregate capacity. With a "performance" license, a 4351 can, usually, guarantee 400 Mbps of capacity, but it's also "capped" at 400 Mbps, which may be insufficient for your needs.
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