Contents
Introduction
Jun 24, 2008 These are the two types of EtherSwitch modules available for Cisco ISRs: EtherSwitch Service Module (ES)—ES modules have their own processors, switching engines, software and flash memory that run independent of the host router resources. After the ES module is installed in the router, you can console into the ES module from the host router. Hi If I install an Enhanced Etherswitch Layer 2 Service Module (SM-ES2-24) in a 2911 router can I do the following:-create SVIs on the router ie vlan interfaces - create the relevant vlans on the Etherswitch and assign to access ports - have the router perform the layer 3 functions for the vlans and will this work through the service module slot connection/backplane? These are the two types of EtherSwitch modules available for Cisco ISRs: EtherSwitch Service Module (ES)—ES modules have their own processors, switching engines, software and flash memory that run independent of the host router resources. After the ES module is installed in the router, you can console into the ES module from the host router.
This document provides a sample configuration for the EtherSwitch Service module installed in the Integrated Service Router (ISR). This document does not discuss the configuration example for the EtherSwitch Network module.
Prerequisites
Requirements
There are no specific requirements for this document.
Components Used
The information in this document is based on these software and hardware versions:
Cisco 2800 Series Router on Cisco IOS® Software Release 12.4(10)
NME-16ES-1G-P - 16-port 10/100 Cisco EtherSwitch Service Module
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
Related Products
This configuration can also be used with Cisco 2600/3600/3700/3800 Series Routers.
Refer to Table 6 in Cisco EtherSwitch Service Modules - Data Sheet for more information.
Conventions
Refer to Cisco Technical Tips Conventions for more information on document conventions.
EtherSwitch Modules - Concepts
These are the two types of EtherSwitch modules available for Cisco ISRs:
EtherSwitch Service Module (ES)—ES modules have their own processors, switching engines, software and flash memory that run independent of the host router resources. After the ES module is installed in the router, you can console into the ES module from the host router. Then you can create VLANs, configure VLANs, spanning tree, and Virtual Terminal Protocol (VTP) from the ES module. ES modules are based on the Catalyst 3750 platform. This document shows the configuration example only for the ES module.
Refer to Cisco EtherSwitch Service Modules - Data Sheet for more information on ES modules.
Refer to Cisco EtherSwitch Service Modules Feature Guide for information on how to administrate ES modules.
Refer to Catalyst 3750 Series Switches - Configuration Guides for information on how to configure ES modules.
EtherSwitch Network Module (ESW)—ESW modules are configured by Router IOS. These modules do not run separate software. It is integrated into the host router IOS. You can create VLANs, configure VLANs, spanning tree, and VTP from the host router. The router stores the VLAN database file (vlan.dat) in the flash.
Refer to Cisco EtherSwitch Network Modules - Data Sheet for more information on ESW modules.
Refer to Cisco EtherSwitch Network Modules Feature Guide for information on how to configure ESW modules.
Refer to EtherSwitch Network Module (ESW) Configuration Example for information on the basic ESW module configuration.
Configure
In this section, you are presented with the information to configure the features described in this document.
Note: Use the Command Lookup Tool (registered customers only) to obtain more information on the commands used in this section.
Network Diagram
This document uses this network setup:
Configurations
This document uses these configurations:
EtherSwitch Module Initial Configuration
After the ES module is installed on the router, you see a new GigabitEthernet interface x/0 (where x is the slot number) recognized by the IOS. This output is taken after the ES module is installed on the router:
The service-module gigabitEthernet x/0 session command is the privileged EXEC mode command used to console into the ES module from the host router. You need to console into the ES module in order to configure it. In order to console into the ES module, it is required to configure the IP address for the GigabitEthernet interface x/0. If you try to console into the module without assigning an IP address, you receive this error message:
| Router1 |
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This output shows the show ip interface brief command from the ES module. The GigabitEthernet1/0/2 interface connects the ES module to the GigabitEthernet1/0 interface of the host router.
If the ES module or the devices connected to this ES module need to communicate to the external network via the host router, this port (GigabitEthernet1/0/2) needs to be a Layer 3 port or it needs to be a member of Layer 3 VLAN. See the Configure Routing section of this document to understand how to configure the routing on the ES module.
This diagram explains the host router and the ES module logical connectivity:
You need to press Ctrl+Shift+6, then X in order to go back to the host router.
If you need to clear the session from the router, issue the service-module gigabitEthernet x/0 session clear command from the router privileged EXEC mode.
Configure VTP and VLAN
By default, the VTP mode is server and the VTP domain name is null in ES module. By default, all the ports belong to vlan1. In this example, a DHCP server (172.16.10.20) is located in vlan 10. The ip helper-address 172.16.10.20 command is configured on all the VLANs except vlan 10 in order to obtain the IP addresses from the DHCP server for the devices located in these VLANs.
| Switch-ES |
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Configure Spanning Tree, Trunk and Port Channel
This section shows the spanning-tree configuration on the ES module and the Access1 switch. This section also shows the port channel and the trunk configuration between the ES module and the Access1 switch. This example configures the rapid spanning tree on all the switches. The ES module is configured as the spanning-tree root for all the VLANs.
| Switch-ES |
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| Access1 |
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Configure Access Port
The access port configuration is similar to the standard LAN switch configuration.
| Switch-ES |
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Configure Voice Port
The voice port configuration is similar to the standard LAN switch configuration.
| Switch-ES |
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Configure Routing
2911 Cisco Router
This example uses static routes to configure the routing.
Cisco 2911 Ports
| Switch-ES |
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| Router1 |
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Configure QoS
This section uses auto QoS to configure QoS. Refer to Cisco AutoQoS White Paper for more information on auto QoS.
| Switch-ES |
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| Router1 |
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Verify
There is currently no verification procedure available for this configuration.
Troubleshoot
2911 Cisco Router Specifications
There is currently no specific troubleshooting information available for this configuration.