Installing the BPX Switch Cards

This chapter explains how to install the BPX switch cards, check for a 9.6 or 19.2 Gbps backplane, connect line and trunk cables, connect peripherals, connect to a network management station, initial power up, and initial configuration.

Before proceeding to this chapter, you should first complete the procedures in either:

Installing the Cards

Caution

Ground yourself before handling BPX switch cards by placing a wrist strap on your wrist and clipping the strap lead to the cabinet, or use the wrist strap that is connected to the cabinet.

The card shelf in the BPX switch has card slots numbered from 1 to 15, as viewed from left to right from the front of the cabinet. Front and rear views of the BPX switch card shelf are shown in Figure 13-1 and Figure 13-2, respectively.

•

Use either a Broadband Controller Card:
BCC-4V
BCC-3-32M
BCC-3-64M, or
BCC-32
in front slot number 7.

•

With a
BCC-4V
BCC-3-32M, or
BCC-3-64M front card,
use a BCC-3-BC back card in back slot number 7,

•

Use two Broadband Controller Cards, a pair of:
BCC-4Vs,
BCC-3-32Ms,
BCC-3-64Ms, or
BCC-32s
in front slot numbers 7 and 8.

•

With:
BCC-4V,
BCC-3-32M, or
BCC-3-64M front cards
use BCC-3-BC back cards in back slot numbers 7 and 8,

•

With BCC-32 front cards, use BCC15-BC back cards in back slot numbers 7 and 8.

Note In some cases, it may be possible to operate two of the three types of BCCs with their proper back cards temporarily for maintenance purposes, such as replacing a failed controller card. Contact Cisco Customer Service for assistance.

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Place the cards LM -3T3, LM-3E3, 2OC3-SMF, 2OC3-MMF in all back slots with a BNI in the corresponding front slot.

Installing Front Cards

Before following the front card installation procedure, carefully note and perform each of the following cautionary steps:

Caution

Ground yourself before handling BPX switch cards by placing a wrist strap on your wrist and clipping the strap lead to the cabinet, or use the wrist strap that is connected to the cabinet.

Caution

You must use Blank Front Card and Rear Face Plates to fill/cover empty card slots to eliminate Radio Frequency Interference (RFI) and Electromagnetic Interference (EMI) and to ensure correct air flow through the card cage.

Systems may be shipped with empty shelves, with filler cards or with plug-in cards installed. If filler cards are installed in each slot, you must replace some of them may with functional cards. The front cards are held captive mechanically by the Air Intake Grille and can not be removed until the lower Air Intake Grille is released.

Caution

Do not attempt to remove a front card from the BPX switch cabinet until the Air Intake Grille is released and lowered or the Air Intake Grille and/or card extractors may be damaged.

Caution

Before any card is installed, always examine the chassis backplane and card cage guides for any signs of loose or misplaced EMI gasketing. Examine the backplane connectors for bent or damaged connection or prepower pins.

Note

It is a good idea to turn off power when initially installing cards. When replacing cards on an operating BPX switch, it is not necessary to turn off power because the cards are hot pluggable.

Step 2

Locate the small access hole in the top center of the front Air Intake Grille below the card slots. For the location, see Figure 13-3.

Step 3

Insert a small slotted blade screwdriver (0.20/0.25 inch blade width) into the access hole until it stops (approximately 1 inch).

Step 4

Carefully rotate the screwdriver approximately a quarter turn in either direction. The top of the Air Intake Grille should spring out.

Step 6

To remove a card, rotate the extractor handles at the top and bottom of the card to release the card and slide it out.

Step 7

To insert a new card, position the rear card guides over the appropriate slots at the top and bottom of the card cage.

Step 8

Gently slide the card in all the way to the rear of the slot and seat the board by fully seating both extractor handles. The handles should snap back to a vertical position when seated.

Note

The card should slide in with slight friction on the adjacent board's EMI gaskets. Investigate any binding. Do not use excessive force.

Installing Back Cards

Caution

Ground yourself before handling BPX switch cards by placing a wrist strap on your wrist and clipping the strap lead to the cabinet, or use the wrist strap that is connected to the cabinet.

Warning Invisible radiation may be emitted from the optical ports of the single-mode or multi-mode products when no fiber cable is connected. Avoid exposure and do not look into open apertures. (For translated versions of this warning, refer to the Regulatory Compliance and Safety Information that accompanied your equipment.)

Warning Class 1 laser product. (For translated versions of this warning, refer to the Regulatory Compliance and Safety Information that accompanied your equipment.)

Warning Laser radiation when open. (For translated versions of this warning, refer to the Regulatory Compliance and Safety Information that accompanied your equipment.)

Step 2

For existing installations, remove any cables that may be attached and label them so they may be replaced in the same location.

Step 3

Loosen the captive mounting screws on both top and bottom of the line module faceplate by using a slotted blade screwdriver as shown in Figure 13-5.

Step 4

Lift the extractor handles at the top and bottom, and slide out the line module.

Step 5

To reinsert the line module, locate the corner edges of the card into the appropriate guide slots at the top and bottom of the card cage. Gently slide the card in all the way to the rear of the slot and push to seat the card in the connector.

Note

The card should slide in easily. Investigate any binding. Do not use excessive force.

Verifying 9.6 or 19.2 Gbps Backplane

To operate the BPX switch at up to a 19.2 Gbps peak throughput, the following components are required:

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A backplane NOVRAM that is programmed to identify the backplane as a 19.2 Gbps backplane.

Switch software will not allow node operation at 19.2 Gpbs unless it can read the backplane NOVRAM to verify that the backplane is a 19.2 Gbps backplane.

You can visually identify the 19.2 backplane by the small white card slot fan fuses at the bottom rear of the backplane shown in Figure 13-6. These fan fuses are approximately 1/4 inch high and 1/8 inch wide. The 9.6 Gbps backplane does not have these fuses.

If the BPX Switch is a late model, then a 19.2 Gbps backplane is installed. You can verify this by running the dspbpnv command, which will display "Word #2 =0001" if the backplane NOVRAM has been programmed. If anything else is displayed, you'll have to visually check the backplane for the fuses. For information about the bit fields used for the BCC backplane NOVRAM format, see the Cisco WAN Switching Command Reference, Release 9.3.30.

If the backplane is a 19.2 Gbps backplane, but the backplane NOVRAM has not been set to display Word #2 =0001, you can use the cnfbpnv command to program the NOVRAM.

To program the NOVRAM with the cnfbpnv command, use the following procedure:

Step 1

Enter cnfbpnv command to configure the backplane. The following message appears as an acknowledgement:

Are you sure this is a new backplane (y/n).

Step 3

Confirm that the change has been made by entering dspbpnv to confirm the response:

Word #2 =0001

Note

If the change does not take place, it is necessary to change the backplane NOVRAM. Contact Cisco Customer Service.

Step 4

Enter the switchcc command to ensure that switch software recognizes the change.

If the backplane is not a 19.2 Gbps backplane, it is necessary to install a 19.2 Gbps backplane to obtain 19.2 Gbps operation. Contact Cisco Customer Service.

Upgrading to BCC-4 Cards

Note The BCC-4 cards require that the backplane be either a 9.6 or 19.2 Gbps backplane. For more information, see the Verifying 9.6 or 19.2 Gbps Backplane section.

Note

If the control card being replaced is a BCC-3, the BCC-3 back card (BCC-3-bc) is similarly used as both the BCC-3 and BCC-4 front cards.

Step 3

Wait for the standby updates on the newly installed standby BCC-4 to complete.

Step 7

Replace with new BCC-4 front and back cards that are identical to the current active BCC-4.

Step 8

Wait for the standby updates on the newly installed standby BCC-4 to complete.

After step 2, the node will contain a mix of an old type BCC and the new type BCC-4. This condition is permitted only while the standby updates to the new BCC are in progress, which takes less than one hour.

You should keep the time during which this mixture of BCC types exists to a minimum by immediately replacing the second old type BCC with the matching BCC of the new type.

Specifying Card Redundancy

You can set up port redundancy by installing two identical front and back card sets, connecting them with a Y-cable on each paired port, then specifying redundancy with the addyred command. Redundancy applies to the entire card and is not port or line-specific.

During normal operation, the primary set is "active" and carrying traffic, while the secondary set is in "standby." The primary set configuration is the configuration for both the primary and redundant set. If you reset the primary cards or the primary card set becomes inactive for another reason, the secondary card set becomes active.

•

Neither the primary nor secondary card set may already be part of a redundant card set pair.

•

If an active card fails, is downed, or removed from the backplane, data automatically goes through the secondary set.

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Most service cards on the IGX and BPX nodes support Y-cable redundancy, with the exception of MMF back cards which do not support Y-redundancy

Figure 13-7 illustrates the typical Y-cable connection of primary and secondary card sets. The single end of a Y-cable (or base of the "Y") goes to the user equipment. One of the two connectors at the split end goes to the primary back card, and the other connector goes to the secondary back card.

Switching to the standby card occurs only if the secondary card set is in a "Standby" or a "Standby-T" state (but not "Failed"). For information on the states, refer to the definition for the dspcds command of the Cisco WAN Switching Command Reference, Release 9.3.30.

Terminating connections is possible at only a primary slot and not at a secondary slot. For a description, refer to the addcon command of the Cisco WAN Switching Command Reference, Release 9.3.30.

On multiport card sets, each primary port is connected by a Y-cable to a secondary (redundant) port.
Port 1 of the primary card set must be paired to port 1 of the secondary card set, and so forth. Figure 13-8 illustrates the cabling for a multiport card set.

If the secondary card set becomes active, the primary card set goes into the standby state. For the primary card set to serve as a backup, it must be a complete set and not have failed status.

You can execute the addyred command even if the primary and secondary slots are empty. If cards reside in the primary and secondary slots, the system checks for card compatibility. Two types of incompatibility can occur: back card and jumper or cable.

If incompatibilities exist, the message "Y-Cable Conflict" appears on screen. Specific conflicts are listed in reverse video in the Y-Cable Redundancy screen. For information about the dspyred command, refer to the Cisco WAN Switching Command Reference, Release 9.3.30.

Y-Cable redundancy is supported for both the UXM and BXM trunk cards at the edge of the ATM cloud.

Installation of APS Redundant Frame Assembly and Back Cards

The procedures in this section provide installation instructions for the SONET Automatic Protection System (APS) Redundant Frame Assemblies and back cards. These may be used to provide line and card redundancy for BXM OC-3 and OC-12 cards.

Table 13-1 BXM SONET APS
Type	Description
APS 1:1	The APS 1:1 redundancy provides line redundancy, using adjacent lines on the same BXM back card.
APS 1+1	The APS 1+1 redundancy provides card and line redundancy, using the same numbered ports on adjacent BXM back cards.

APS 1:1 Redundancy Installation

APS 1:1 redundancy provides line redundancy only and is supported with the standard BXM OC-3 and OC-12 front and back cards. Figure 13-9 and Figure 13-10 illustrate the APS protocols for BXM.

APS 1+1 Redundancy Installation

APS 1+1 redundancy provides both card and line redundancy. It uses the standard BXM OC-3 and OC-12 front cards but requires a special APS Redundant Backplane and APS Redundant back cards.

With previous card cages, because of the positioning of mechanical dividers, the APS card pairs could be inserted only in slots 2 through 5 and 10 through 13. The mechanical dividers are located at slots 1 and 2, 5 and 6, 9 and 10, and 13 and 14.

With current card cages, this limitation is removed so that the APS card pairs can be located anywhere except BCC cards slots 7 and 8, and ASM card slot 15. An APS 1+1 redundant card pair must be in adjacent slots (2,3 or 4,5 and so on).

To install APS Redundant Frame Assembly and back cards, use the following procedure:

Step 1

If not already in place in the APS Redundant Frame Assembly, slide the two APS back cards into the APS Redundant Frame Assembly.

Warning Nylon standoffs on the APS Redundant Frame Assembly must be in place to prevent shorting against -48 VDC pins and ground pins on the BPX Midplane.

Step 2

Verify that nylon standoffs are securely installed on APS Redundant Frame Assembly
(see Figure 13-11).

Step 3

Carefully slide APS Redundancy Frame Assembly and APS cards into selected side-by-side slots at the back of the BPX shelf (see Figure 13-12). Slide the APS Redundancy Frame Assembly and cards into the BPX shelf until snug against the BPX midplane (see Figure 13-13).

Step 4

Going back and forth between the screws, gradually tighten retaining screws at top and bottom of the APS back cards until all are secure.

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