Can I connect combo interface of S series switch to external network

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For S series switches (except S1700 switches), a combo interface consists of an optical Ethernet interface and an electrical Ethernet interface on the panel. The electrical and optical interfaces are multiplexed, and only one of them can work at a time. The combo interface working in optical or electrical interface mode provide the same functions as a common optical or electrical interface. Therefore, the combo interface can connect to external networks.

Other related questions:
Combo port supported by S series switches
Combo ports are supported by S series switches as follows: Modular switch: - S9300: LE0MG24CA, LE0DG24CEAS0, LE1D2S04SX1E, and LE1D2S08SX1E - S7700: ES0D0G24CA00, ES1D2S04SX1E, and ES1D2S08SX1E - S9700: EH1D2S24CSA0, EH1D2S24CEA0, EH1D2S04SX1E, and EH1D2S08SX1E - S12700: ET1D2S04SX1E and ET1D2S08SX1E Fixed switch: - Switch models containing "TP" support combo ports.

Can the combo interface on the SRU connect to the 100M optical module
Yes, the combo interface on the SRU can connect to the 100M optical module. When the combo interface on the SRU connects to the 100M optical module, it does not support auto-negotiation mode, so the peer device must use the 100M optical module and the peer interface must be manually configured to work in full duplex mode.

How can I view the combo port number on an S series switch
You can use the following methods to identify a combo port on a switch: 1. Identify a combo port based on the port ID on the switch panel. If two ports have the same ID but connects to different transmission media (optical & electrical), the two ports are multiplexed as a combo port. 2. Run the display interface command to display the combo port information. display interface gigabitethernet 1/0/1 ... IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 0025-9e80-2494 Port Mode: COMBO AUTO Speed : 100, Loopback: NONE

Rate supported by the combo port on an S series switch
For S series switches (except S1700 switches), the working rate of a combo port is as follows: - When the combo port works as an optical port, the working rate is 100/1000 Mbit/s. - When the combo port works as an electrical port, the working rate is 10/100/1000 Mbit/s. Some devices have interface-related identifiers on the interface panel, and you can determine the working rate of a combo port based on the identifiers.

Whether the L2 interface of USG firewalls can function as a WAN interface?
The L2 interface of USG firewalls can function as a WAN interface. The WAN interface mentioned here refers to an interface connected to an external network, generally an optical fiber of a carrier. IP addresses cannot be directly configured for L2 interfaces. Therefore, you can use the VLANIF interface as the WAN interface (L3 interface). The configuration is as follows: 1. Choose Network > Interface. Create a VLAN interface, and set parameters such as the IP address, mask, and gateway.2. Choose Network > Interface. Change the mode of the corresponding L2 interface to Access, and add the configured VLAN interface.

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