Restrictions for 1G Mode on 8X10 GE Interface Module
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SFP+ is not supported on 1G mode, but the physical link with SFP+ in 1G mode comes up.
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Support of 1G mode on a port and 10G mode on another port in the same interface module is not supported.
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Precision Time Protocol (PTP) is not supported.
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Sync-E is not supported. However, Sync-E is supported in over subscription mode on the interface module.
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Port channel bundling on 1G mode is not supported.
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Although 1G mode is supported on the interface module, the interface is displayed as "Te0/X/Y" depending on the port numbers for both 1G and 10G modes.
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10G mode support on 8X10GE interface module does not change with dual-rate support.
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Carrier delay configuration of less than 2 seconds is not supported on both 1G and 10G modes for the 8-port 10 Gigabit Ethernet interface module.