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by jvolkman
1005 days ago
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I believe the issue wasn't of IPv6 support generally, but of issues with TCAM space and the increase in routing table size moving from v4 to v6. Overflowing TCAM would cause routing to hit the CPU which would immediately lead to outages. Tables were relatively large internally because AWS was all in on clos networks at that point. And the devices used to build those clos networks were running Broadcom ASICs, not Cisco or other likely vendors. |
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