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After rebooting or power cycling the Switch 208T/224T with the IOS Router module installed I see an Expansion Slot error message; what does this mean?

April 26, 2017cycling installed IOS module power rebooting Router Switch

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After rebooting or power cycling the Switch 208T/224T with the IOS Router module installed I see an Expansion Slot error message; what does this mean?

1 Answer

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This is normal behaviour with the current firmware (all firmware up to version A.01.22). This message occurs because the Internet (IOS) router takes longer to come up than the current firmware expects. So one error message is issued as the switch and the router are coming up, then when the switch checks the router a second time, the Internet router is fully up and everything is fine.