Connecting Content Engine Network Modules for Caching and Content Delivery

Table Of Contents

Connecting Content Engine Network Modules for Caching and Content Delivery

CE Network Modules

Connecting CE Network Modules to the Network

Connecting CE Network Modules with SCSI Controller Expansion Modules to an External Cisco Storage Array

CE Network Module LEDs

Online Insertion and Removal with a CE Network Module

Related Documents

Hardware Documentation

Cisco IOS Software Documentation

Content Engine Documentation

Cisco Storage Array Documentation

Connecting Content Engine Network Modules for Caching and Content Delivery

This chapter describes how to connect content engine (CE) network modules for caching and content delivery and contains the following sections:

• CE Network Modules

• CE Network Module LEDs

• Online Insertion and Removal with a CE Network Module

• Related Documents

Tip To determine whether your router supports a specific network module, see Table 1-6 on page 1-16.

CE Network Modules

This section provides overview information on CE network modules. The following CE network modules are available on Cisco modular routers:

•CE network module with a 40-GB Disk Expansion Module (NM-CE-BP-40G-K9) (see Figure 19-1)

•CE network module with a 80-GB Disk Expansion Module (NM-CE-BP-80G-K9) (see Figure 19-1)

•CE network module with a SCSI Controller Expansion Module and a 68-pin SCSI connector for connection to an external storage array (NM-CE-BP-SCSI-K9) (see Figure 19-2)

The 80-GB CE network module can run Application and Content Networking System (ACNS) software or Cisco Wide Area File Services (WAFS) software. The 40-GB CE network module and the CE network module with a SCSI controller can run ACNS software only. For information on configuring ACNS or WAFS, see the documentation listed in the "Related Documents" section.

Caution To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, connect the CE network modules (NM-CE-BP-40G-K9 and NM-CE-BP-80G-K9) only to intrabuilding or nonexposed wiring or cabling. The intrabuilding cable must be shielded and the shield must be grounded at both ends.

Note The NM-CE-BP network module clock may be reset to 1980 if it is powered off for a long period. Several applications that depend on correct time being configured on the network module may not work in such a scenario. Therefore we strongly recommended that the NM-CE-BP network module be configured for NTP using the ntp server server Cisco IOS command, either after a software upgrade from Application and Content Networking System software Release 4.2.x to Release 5.x, or on obtaining a new network module, to maintain correct time on the network module.

Note There is no backup power for a network module's real time clock. Once power has been turned off or the network module has been removed from the router, the real time clock stops.

Figure 19-1 Faceplate for the CE Network Module with 40- or 80-GB Disk Expansion Module

Figure 19-2 Faceplate for the CE Network Module with SCSI Connector Expansion Module

Note Some early CE network modules have an inactive USB port on the faceplate. This USB port has been removed in later Cisco CE network modules.

Tip For information on removing, replacing, and installing the expansion modules, see the Installing Expansion Modules on Cisco CE Network Modules for Caching and Content Delivery document.

Connecting CE Network Modules to the Network

To connect a CE network module to the network, from the RJ-45 port on the CE network module use a straight-through two-pair Category 5 unshielded twisted-pair (UTP) cable to connect to a switch, hub, repeater, server, or other network device. (See Figure 19-3.)

Note RJ-45 cables are not available from Cisco Systems. These cables are widely available and must be Category 5 cables.

Figure 19-3 Connecting a CE Network Module to a Fast Ethernet Hub

Connecting CE Network Modules with SCSI Controller Expansion Modules to an External Cisco Storage Array

Timesaver Connecting the external Cisco storage array requires you to reboot the network module or router. To save time, connect the external Cisco storage array to the CE network module before powering on the router or network module.

To connect a CE network module with a SCSI controller expansion module to an external storage array, use a 68-pin, low-voltage differential (LVD) SCSI cable. Connect the cable to the SCSI port on the network module to the SCSI port on the external Cisco storage array. (See Figure 19-4.)

Cisco Storage Array 6 is supported on the CE network module with SCSI controller expansion module. (See the Cisco Storage Array 6 Installation and Configuration Guide.)

Tip Use either a 36- or 108-inch LVD SCSI cable, depending on the length required between the router and the external storage array.

Figure 19-4 Connecting a CE Network Module with SCSI Controller Expansion Module to an External Cisco Storage Array

CE Network Module LEDs

All CE network modules have an enable (EN) LED. This LED indicates that the module has passed its self-tests and is available to the router.

CE network modules also display an additional power (PWR) LED and a CompactFlash (CF) LED on the faceplate, and two additional LEDs for the Fast Ethernet port. (See Figure 19-5 and Table 19-1.)

Figure 19-5 CE Network Module LEDs

Table 19-1 Content Engine Network Modules for Caching and Content Delivery LEDs

LED

Meaning

ACT

There is activity on the Fast Ethernet connection.

CF

The compact flash module is active.

DISK

There is activity on the 40- or 80-GB disk expansion module hard drive.

Note The faceplate for the CE network module with SCSI controller expansion module also displays the disk LED, but the LED is not active.

EN

The module has passed self-test and is available to the router.

LINK

The Fast Ethernet connection is available to the network module.

PWR

Power is available to the network module.

Online Insertion and Removal with a CE Network Module

Some Cisco modular access routers allow you to replace network modules without switching off the router or affecting the operation of other interfaces. This feature is called online insertion and removal (OIR). OIR of network modules provides uninterrupted operation to network users, maintains routing information, and ensures session preservation. To find out if the router you are working on allows OIR, see the router model's hardware installation guide.

Caution Unlike other network modules, CE network modules use hard disks. Online removal of disks without proper shutdown can result in file system corruption and might render the disk unusable. The operating system on the CE network module must be shut down in an orderly fashion before the network module is removed.

Caution Cisco routers support OIR with similar modules only. If you remove a network module, install another module exactly like it in its place. If you remove a 2-slot network module (along with any installed WAN or voice interface cards), install another module and card combination exactly like it.

For a description of informational and error messages that may appear on the console during this procedure, see the hardware installation guide for your type of router.

To perform online removal of a CE network module and insertion of a replacement, follow these steps with the router in privileged EXEC mode:

Step 1 Initiate a CE network module console access session using the following command:

Router# service-module content-engine slot/unit session

Trying 10.10.10.1, 2129 ... Open

CE-netmodule con now available

Press RETURN to get started!

CE-netmodule> enable
CE-netmodule#

Step 2 Save the running configuration of the content engine using the following command from the CE-netmodule prompt:

CE-netmodule# copy running-config tftp tftp-server-address filename

Step 3 Exit the CE network module console access session by pressing Control-Shift-6, followed by x.

Step 4 On the router, clear the CE console access session using the following command:

Router# service-module content-engine slot/unit session clear

Step 5 Perform a graceful halt of the CE network module disk drive by using the following command:

Router# copy tftp running-config tftp-server-addresss filename

Step 6 Shut down the content engine interface:

Router (config)# interface content-engine slot/unit
Router (config-if)# shutdown
Router (config-if)# exit

Step 7 Unplug all network interface cables from the CE network module.

Step 8 Loosen the two captive screws holding the CE network module in the chassis slot.

Step 9 Slide the CE network module out of the slot.

Step 10 Align the replacement CE network module with the guides in the chassis slot, and slide it gently into the slot.

Note If the router is not fully configured with network modules, make sure that blank panels fill the unoccupied chassis slots to provide proper airflow.

Step 11 Push the module into place until you feel its edge connector mate securely with the connector on the backplane.

Step 12 Reconnect the network interface cables previously removed in Step 7.

Step 13 Check that the network module LEDs are on and that the power and enable LEDs on the front panel also are on. This inspection ensures that connections are secure and that the new unit is operational.

Step 14 Initiate a CE network module console access session with the following command:

Router# service-module content-engine slot/unit session

Trying 10.10.10.1, 2129 ... Open

CE-netmodule con now available

Press RETURN to get started!

CE-netmodule> enable
CE-netmodule#

Step 15 Restore the content engine's running configuration by using the following command from the CE-netmodule prompt:

CE-netmodule# copy tftp running-config tftp-server-address filename

Step 16 Exit the CE network module console access session by pressing Control-Shift-6, followed by x.

Step 17 On the router, clear the CE console access session using the following command:

Router# service-module content-engine slot/unit session clear

Related Documents

For information on configuring ACNS, see the documentation at the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/webscale/uce/

For information on configuring WAFS, see the documentation at the following URL:

http://www.cisco.com/en/US/products/ps6469/tsd_products_support_series_home.html

Tip For information on obtaining documentation, see the "Obtaining Documentation" section on page viii. For information on obtaining technical assistance, see the "Obtaining Technical Assistance" section on page xi.

Hardware Documentation

For information on installing and removing CE network module expansion modules, see the Installing Expansion Modules on Cisco CE Network Modules for Caching and Content Delivery document.

Cisco IOS Software Documentation

For a description of the Cisco IOS features supported on CE network modules, see the Content Engine Network Module for Caching and Content Delivery document.

Content Engine Documentation

For information on the Cisco Content Engine, refer to the documents listed under Cisco Content Engine.

Cisco Storage Array Documentation

For information on installing and configuring the Cisco Storage Array 6, refer to the Cisco Storage Array 6 Installation and Configuration Guide.

LED	Meaning
ACT	There is activity on the Fast Ethernet connection.
CF	The compact flash module is active.
DISK	There is activity on the 40- or 80-GB disk expansion module hard drive. Note The faceplate for the CE network module with SCSI controller expansion module also displays the disk LED, but the LED is not active.
EN	The module has passed self-test and is available to the router.
LINK	The Fast Ethernet connection is available to the network module.
PWR	Power is available to the network module.