Cisco 2900 Series – Line 2 & Embedded-Service-Engine

Line 2 in 2900/3900 series router is used by ISM (Internal Service Module).

A single ISM slot provides flexibility to integrate intelligent service modules on an internal slot within the chassis

Cisco Integrated Services Routers Generation 2 (Cisco ISRs G2) have dual core CPUs on the motherboard. The first core runs Cisco IOS software as Cisco Integrated Services Routers (ISRs) do; the second core, or the Embedded Service Engine, is capable of running Linux-based applications.

The following Cisco ISR G2 platforms support the Embedded Service Engine:

• Cisco 2911
• Cisco 2921
• Cisco 2951
• Cisco 3925
• Cisco 3945

Router# service-module embedded-Service-Engine 0/0 status
Service Module is Cisco Embedded-Service-Engine0/0
Service Module supports session via TTY line 2
Service Module is in Steady state
Service Module heartbeat-reset is enabled
Getting status from the Service Module, please wait..
Cisco CIMC-E Software 1.0
CIMCE Running on VSEM
Embedded Service Engine boot state is KERNEL UP 
Module resource information:
 CPU Frequency: 500 MHz
 Memory Size: 256 MB
 Disk Size: 488 MB
 
No install/uninstall in progress

On new routers, line 2 and interface Embedded-Service-Engine0/0 is no longer in use. These configuration are ignored.

Reference:

• https://www.cisco.com/c/ja_jp/td/docs/ciam/servs-readyengine-sre-modules/servs-readyengine-sre-mod/cg/002/ism-sre.html
• https://community.cisco.com/t5/switching/line-2-on-cisco-2911-router/td-p/2406118
• https://www.cisco.com/c/en/us/td/docs/interfaces_modules/services_modules/cimce/1-0/configuration/guide/CIMCe.html
• https://www.cisco.com/c/en/us/products/collateral/routers/2900-series-integrated-services-routers-isr/data_sheet_c78_553896.html