Cisco Catalyst 1800 Series Switches

Document ID: 17061

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Is the port administratively disabled?

If the "Ring Status" LED is off, that Token Ring or FDDI port is disabled.

To verify that the port is administratively disabled:

1. From the Main Menu, enter the con phy command.
2. At the prompt, enter the number of the problem port and the Configure Physical Ports menu is displayed.
3. To check the port status, enter con phy [x] state, where "x" is the port number. If the state of the port is "disabled", the port is administratively disabled.

• Token Ring port - RJ-45 (Category 3 or 5 UTP) or IBM STP (Type 1) cables
• Token Ring port on FDDI Uplink option - Direct Attach cable shipped with unit
• FDDI port - multimode fiber with a MIC connector (for connections up to 2 km long), or singlemode fiber with an ST connector (for connections longer than 2 km)

1. From the Main Menu, enter the con phy command
2. At the prompt, enter the number of the problem port and the Configure Physical Ports menu is displayed.
3. To change the port state, enter con phy [x] state, where "x" is the port number.
4. At the system prompt, enter Enable and press Return.

1. From the Main Menu, enter c i.
2. Press Return and the IP Parameters Menu is displayed.
3. Enter a port number or "0"
4. The IP address is the current IP address for the domain.

1. From the Main Menu, enter c i.
2. Press Return and the IP Parameters Menu is displayed.
3. Enter a port number or "0"
4. The IP address is the current IP address for the domain.
5. You can set the IP address, default gateway address, and IP subnet mask from this menu.

How do I check the subnet mask on the switch and reconfigure it?

1. From the Main Menu, enter c i 0.
2. Press Return and the IP Parameters Menu is displayed.
3. Enter a port number or "0"
4. Select Display. The "Subnet Mask" field contains the current IP subnet mask.
5. To change the subnet mask parameter for all ports, from the Configuring IP Parameters Menu, enter "0."

1. From the Main Menu, enter c i 0.
2. Press Return and the IP Parameters Menu is displayed.
3. Enter a port number or "0"
4. Select Display. The "Subnet Mask" field contains the current IP subnet mask.
5. To change the subnet mask parameter for all ports, from the Configuring IP Parameters Menu, enter "0."

1. From the Main Menu, enter c i.
2. Press Return and the IP Parameters Menu is displayed.
3. Enter a port number or "0"
4. Select Display. The IP Parameters Menu is displayed, and the current gateway settings display.

1. From the Main Menu, enter c i.
2. Press Return and the IP Parameters Menu is displayed.
3. Enter a port number or "0"
4. You can set the IP address, default gateway address, and IP subnet mask from this menu.