Do Layer 3 Ethernet interfaces support IPSG

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Layer 3 Ethernet interfaces do not support IPSG. Only Layer 2 Ethernet interfaces support IPSG.

Other related questions:
What interfaces are provided on the AR that support VRRP
Interfaces that support VRRP include the Layer 3 Ethernet interface, VLANIF interface, Layer 3 Eth-Trunk interface, Ethernet subinterface, and Eth-Trunk subinterface.

Do Ethernet interfaces on CE series switches support switching between Layer 2 and Layer 3 modes
Ethernet interfaces on all CE series switches, except the CE6810LI, support switching between Layer 2 and Layer 3 modes. By default, Ethernet interfaces on CE series switches work in Layer 2 mode. 1. Switching Layer 2 interface to Layer 3 mode: Run the undo portswitch command in the interface view to switch a Layer 2 interface to Layer 3 mode. Before switching, delete all non-default configurations from the interface. 2. Switching Layer 3 interface to Layer 2 mode: Run the portswitch command in the interface view to switch a Layer 3 interface to Layer 2 mode. Before switching, delete all Layer 3 service configurations from the interface.

The state of an E1 interface is not Up when the interface interconnects with the peer device
For the problem that the state of an E1 interface of an AR router is not Up when the interface interconnects with other devices, see the troubleshooting guide. For details, access the URL in the right column.

Does the Ethernet LAN interface card of an AR router provide Layer-2 interfaces or Layer-3 interfaces
All interfaces provided by the Ethernet LAN interface card of an AR router are Layer-2 Ethernet interfaces. Ethernet LAN cards of AR routers include the following models: 8FE1GE: a WSIC card that provides 8 FE interfaces and a GE interface 9ES2: a WSIC card that provides 8 FE electrical interfaces and a GE electrical interface 24GE: an XSIC card that provides 24 GE electrical interfaces 4GE-2S: a WSIC card that provides 4 GE optical interfaces 4ES2G-S: a SIC card that provides 4 GE electrical interfaces 4ES2GP-S: a SIC card that provides 4 GE electrical interfaces

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