- Overview
- Command Line Interface
- Access the Switch Module from the Host Router
- Assign the Switch Module IP Address and Default Gateway
- Cisco IOS Configuration Engine
- Administer the Switch Module
- Switch Module Authentication
- Interface Configuration
- EtherChannel Configuration Between the Switch Module and the Host Router
- Smartports Macros Configuration
- VLAN Configuration
- Private VLAN Configuration
- IEEE 802.1Q and Layer 2 Protocol Tunneling Configuration
- Quality of Service Configuration
- EtherChannel Configuration and Link State Tracking
- MODBUS TCP Configuration
- SDM Template Configuration
- Troubleshooting
- Initial Configuration with the CLI Setup Program
- Cisco IOS File System, Configuration Files, and Software Images
- MODBUS TCP Registers
- Unsupported Commands in Cisco IOS Release 12.2(58)EZ
EtherChannel Configuration Between the Switch Module and the Host Router
This chapter describes how to configure the backplane interface PortChannel48, which provides communication between the host router and the switch module. It contains the following topics:
About the Backplane PortChannel48 Interface
The CGR 2010 ESM is inserted into the Cisco CGR 2010 Router. The switch module’s backplane interface is called PortChannel48 . PortChannel48 is the backplane interface connected to the CGR 2010 Router and provides communication between the host router and the switch module.
The PortChannel48 interface consists of eight 10/100 Fast Ethernet physical links that are grouped together to create a FastEtherChannel. PortChannel48 is created automatically when the switch module boots up.
Note
It is recommended that all eight interfaces should be EtherChannel members and users are discouraged from removing any of the eight interfaces from the EtherChannel.
You can configure these interfaces like any other interface with the important exception that you cannot delete the system-created PortChannel48 interface.
You can change the PortChannel48 interface configuration from trunk mode to access mode (that is, non-trunk mode), or configure the PortChannel48 interface as a Layer 3 interface by configuring an IP address on the interface. For details, see “Configuring the Backplane PortChannel48 Interface” section.
Once a port is designated as a trunk port, it will forward and receive tagged frames.Frames belonging to the native VLAN do not carry VLAN tags when sent over the trunk. Conversely, if an untagged frame is received on a trunk port, the frame is associated with the native VLAN for this port.
The backplane PortChannel48 interfaces to the CGR 2010 host router. The router does not recognize spanning tree BPDUs; the spanning Tree Protocol is disabled on the PortChannel48 interface.
PortChannel48 Defaults
By default, the PortChannel48 interface comes up in Layer 2 trunk mode, with 802.1Q trunk encapsulation. 802.1Q is the only encapsulation method supported on the switch module.
Here is how the typical PortChannel and individual physical configuration looks when the switch module comes up the first time:
By default, the PortChannel48 interface is created in Layer 2 trunk mode, which means that the switch module operates in Layer 2 trunk mode with 802.1Q encapsulation carrying VLAN1 by default. This PortChannel48 interface supports load-balancing across multiple physical links, in the same way as the regular user-configured EtherChannel does, using the following parameters:
Configuring the Backplane PortChannel48 Interface
By default, the switch module comes up in Layer 2 trunk mode. This section describes how to configure the PortChannel48 interface for the switch module for each of the following modes:
Configuring the PortChannel48 Interface for Layer 3 Routing Mode
This section describes how to change from the default Layer 2 trunk mode to Layer 3 routing mode:
Configuring the PortChannel48 Interface for Layer 2 Trunk Mode
These commands configure the PortChannel in Layer 2 Trunk mode.
This command configures both the PortChannel48 interface and its member ports in trunk mode.
Note that every port from FE0/5 to FE0/12 (on the Fiber Model) and ports FE0/9 to FE0/16 (on the Copper Model) should be configured as shown here:
Configuring the PortChannel48 Interface for Layer 2 Access Mode
These commands configure the PortChannel in Layer 2 Access mode. Note that every port from FE0/5 to FE0/12 (on the Fiber Model) and ports FE0/9 to FE0/16 (on the Copper Model) should be configured as shown here:
Sample Gigabit Ethernet Interface Configuration on the CGR 2010 Router
This section describes the Gigabit Ethernet configuration required on the host CGR 2010 router to implement the PortChannel48 interface on the router.
Interface GigabitEthernet0/ < slot 0 or 2> /0 is the backplane interface connected to the switch module. This interface can also have subinterfaces for each of the networks.
Interface to Receive Routed Traffic for Network 20.70.0.0
Interface to Receive Bridge Traffic on bridge-group 60
Backplane Subinterface to Receive Bridged Traffic on VLAN 60
Backplane Subinterface to Receive Routed Traffic on VLAN 70
Specifying the Static Route for the Network
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