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After positioning, anchoring, and connecting bays for an initial 2-bay installation, the backplanes of the adjacent bays are joined (refer to Figure 3-1).
Figure 3-1. 2-Bay Configuration
If this is a 4-bay configuration, first connect the 2 front bays and continue on with the instructions for "Connecting 4-Bay Configurations (TSR II)."
Connecting Backplanes - 2-Bay Configuration
The 2-Bay Configuration requires physically joining the backplanes of two adjacent bays using switchable flex connectors. These switchable flex connectors provide the connectivity for modules in the adjacent bays. Upon initial installation, switch knobs on the switchable flex connectors must be in the X Not Extended position. When in X Not Extended position, communication between modules is restricted to one bay or one backplane. As router module pairs are installed in additional bays, the switchable flex connector knob is set to X Extended to provide the pathway through which the newly installed module can communicate with modules in the existing bay. This unique design allows additional bays to be populated incrementally without further hardware installation.
When joining the backplanes of adjacent TSR bays in initial installations, the steps are as follows:
- Remove EMI enclosure from the rear of the adjoining bays.
- Remove loopback connectors from the rear of both of the adjacent bays.
- Install switchable flex connectors between the bays to connect the backplanes.
- Remove switch knobs from flex connectors.
- Attach labels to the EMI enclosures and install enclosures over the flex connectors.
- Reattach the switch knobs onto the flex connectors.
- Determine backplane connection locations for the X axes if modules are being installed in the second bay.
- Set the switchable flex connector knob to X Extended for modules being installed in Bay 3.
- Install, cable and initialize router modules in Bay 3.
- Bring up the X axis to router modules in Bay 3.
Bay Numbering
In the 2-Bay Configuration, the bays are numbered 1 and 3 in the front (refer to Figure 3-2).
Figure 3-2. Bay Numbering
Installing the Antistatic Wrist Strap
A grounded antistatic wrist strap must be used while installing components to protect the TSR system from damage caused by static. Use the ESD jack when installing loopbacks, flex connectors, EMI enclosures, and Y-cables. In TSR II bays, there are ESD jacks at each shelf level (refer to Figure 3-3).
PROCEDURE: Use the following procedure to install the antistatic wrist strap in or TSR II bays:
Step 1 Remove the alligator clip from the grounding pin on the antistatic wrist strap.
Step 2 Insert the grounding pin into the electrostatic discharge (ESD) jack on one of the shelves on the TSR II (refer to Figure 3-3).
Step 3 Use the ESD jack while installing EMI enclosures, loopback connectors, flex connectors, and Y-cables.
Figure 3-3. TSR II - ESD Jack Locations
Removing EMI Enclosures
Removal of EMI enclosures from the rear of bays allows access to loopback connectors, which are removed to allow for installation of the switchable flex connectors.
TSR II EMI enclosures are located on the upper backplanes (refer to Figure 3-4).
TSR II bays have 2 large EMI enclosures encasing the upper backplane and four smaller EMI enclosures on the bottom rear of the bay. Both the top EMI enclosures and the bottom two EMI enclosures adjacent to Bay 1 are removed (refer to Figure 3-4).
PROCEDURE: Beginning at the top rear of Bay 1, use these steps to remove the EMI enclosures:
Step 1 Hand loosen the seven captive screws on the top EMI enclosure (refer to Figure 3-4).
Step 2 Remove the EMI enclosure from the bay.
Step 3 Repeat Step 1 and Step 2 for the second large EMI enclosure on the top backplane (refer to Figure 3-4).
Step 4 Hand loosen the captive screws on the two small bottom EMI enclosures nearest to Bay 3 (refer to Figure 3-4).
Step 5 Remove the two small EMI enclosure from Bay 1.
Step 6 Repeat Step 1 through Step 5 for the EMI enclosures on Bay 3.
Figure 3-4. EMI Enclosure Removal - TSR II Bay
Removing Loopback Connectors
Loopback connectors positioned on the backplane of the TSR bay serve as boundaries for communication within a bay or a backplane. In order to extend communication from one bay or backplane to two, loopback connectors must be replaced with switchable flex connectors.
Before installing the switchable flex connectors, it is necessary to remove the loopback connectors from the rear of Bay 1 and Bay 3 (where adjacent) in the 2-Bay Configuration.
PROCEDURE: Beginning at the top of Bay 1 on the side adjacent to Bay 3 (working downward in groups of five), use the following procedure to remove loopback connectors from the bay:
NOTE Exercise care when removing the loopback connectors. Loopbacks must be pulled straight off the TSR bay (refer to Figure 3-6 and Figure 3-7).
Figure 3-5. Loopback Connector
Step 1 Grasp the handle on the loopback connector and firmly pull straight back to remove the loopback (refer to Figure 3-5 and Figure 3-6).
Figure 3-6. Side View of Loopback Removal
Step 2 Repeat Step 1 for the remaining 19 loopbacks on Bay 1 (refer to Figure 3-7).
Step 3 Beginning at the top of Bay 3 and working downward in groups of five, repeat Step 1 and Step 2 for the 20 loopbacks on Bay 3.
Figure 3-7. Loopback Removal
Installing EMI Base Plates
Before installing the switchable flex connectors, EMI base plates must be installed between the bays. In side-to-side configurations, EMI base plates protect against potential EMI interference.
EMI base plates are positioned between the bays before installing switch flex connectors. Studs on the bays (used to hold EMI covers on) hold the base plate in place (refer to Figure 3-8). When the EMI cover is installed, the cover secures the EMI base plates in position.
NOTE When installing the base plates, ensure that the bent edges on the top and bottom of the plate (short edges) face towards the bays. The bent edge of the longer edges faces out from the bay.
PROCEDURE: Beginning at the top rear of Bays 1 and 3, use the following procedure to position the EMI base plates between the bays:
Step 1 Check the orientation of the base plate, ensuring that the top and bottom bent edges are facing towards the bays (refer to Figure 3-8).
Step 2 Position the EMI base plate over the space between the bays, resting it on the studs projecting from the bays.
Step 3 Repeat Step 1 and Step 2 for the remaining three base plates.
Figure 3-8. EMI Base Plate Installation
Installing Switchable Flex Connectors
Switchable flex connectors physically connect the backplanes of adjacent bays and extend the toroidal mesh by providing the pathway for module communication between adjacent bays. Switchable flex connectors have two possible settings, X Not Extended and X Extended. When in X Not Extended position, communication between modules is restricted to one bay or one backplane. When in X Extended position, communication between modules in adjacent bays is extended to one or more bays or backplanes.
Upon initial installment, all flex connectors must be in the X Not Extended position. In 2-bay configurations, the switch side (X Not Extended position) is installed in Bay 1, (refer to Figure 3-11 and Figure 3-13). As router modules are added to adjacent bays, the flex connector switch knob is set to X Extended to allow communication between modules to extend to the adjacent bay. Once installed, switchable flex connectors allow the future addition of router module pairs without additional hardware installation (refer to Figure 3-15). After installation of flex connectors, a labeled EMI enclosure is installed over each set of five flex connectors. The labeling on the EMI enclosure represents module pathways. The EMI enclosure also allows access to set the switches.
Figure 3-9. Switchable Flex Connector
PROCEDURE: Beginning at the top rear of Bays 1 and 3 and working downward in groups of five, use the following procedure to install the switchable flex connectors between the bays:
NOTE When installing switchable flex connectors, ensure that the switch side is installed in the bay that is being extended. In this case, the switch side is installed on Bay 1 (refer to Figure 3-11 and Figure 3-15).
Step 1 Remove the protective caps from the bottom of both sides of the switchable flex connector.
Step 2 Carefully position the guides of the switchable flex connector onto the guide pins on the backplane connectors on Bay 1 and Bay 3 (refer to Figure 3-10 and Figure 3-11).
Figure 3-10. Switchable Flex Connector Installation - 1
Figure 3-11. Switchable Flex Connector Installation - 2
Step 3 Carefully push the switchable flex connector onto the backplane connectors to seat the connector (refer to Figure 3-11).
Step 4 Repeat Step 1 through Step 3 for the remaining nineteen switchable flex connectors.
Securing EMI Enclosures
After installing the switchable flex connectors, labels are attached to each of the four EMI enclosures. Each label corresponds to a shelf and identifies the module-to-module communication pathway between bays. When populating in multi-bay configurations, these labels instruct users which communication pathways to switch to X Extended for each router module pair.
Before positioning and securing these EMI enclosures, the switch knob must be removed from each of the flex connectors. A small set screw secures the switch knob on each of the flex connectors. After removing the knobs from each of the flex connectors, secure the corresponding EMI enclosure over each set of five switchable flex connectors, and reattach the switch knob to the flex connector.
NOTE EMI enclosures are positioned on bays with the captive fasteners on the right side of the enclosure. Before positioning labels on the EMI enclosures, check to make sure the top of the label is going on the top of the EMI enclosure (refer to Figure 3-13).
PROCEDURE: Beginning at the top of Bays 1 and 3 and working downwards, use the following procedure to remove switch knobs, secure the EMI enclosures, and reinstall the switch knobs:
Step 1 Position the four EMI enclosure labels on the four EMI enclosures with the right side facing up (refer to Figure 3-13).
Step 2 Using a .050 in. allen wrench, turn the set screw on the switchable flex connector counter-clockwise to loosen it and remove the switch knob from the flex connector (refer to Figure 3-12).
Step 3 Remove the switch knob on the top flex connector and set aside (refer to Figure 3-12).
Figure 3-12. Switch Knob Removal
.
Step 4 Working downward, repeat Step 2 through Step 3 and remove the switch knob from the for the next four flex connectors.
Figure 3-13. Installation of Labeled EMI Enclosures
Step 5 Position the EMI enclosure with the correct label for the shelf over the top 5 switchable flex connectors between the bays (refer to Figure 3-15).
Step 6 Tighten the four captive fasteners on the EMI enclosure to the studs on Bay 1 (refer to Figure 3-13).
Step 7 Use two nut plates to secure the EMI enclosure to the studs on Bay 3.
Step 8 Using a .050 allen wrench, reattach the switch knob to the top flex connector and tighten the set screw to secure the switch knob. Ensure that the set screw tightens against the flat on the switch shaft (refer to Figure 3-11 and Figure 3-15).
Step 9 Repeat Step 2 through Step 8 for the remaining four switch flex connectors.
Step 10 Repeat Step 2 through Step 9 for the remaining three sets of flex connectors.
.
Figure 3-14. Side View of EMI Enclosure
Figure 3-15. EMI Enclosures Installed
Installing the Thinnet Ethernet - 2-Bay Configuration
In multi-bay configurations, the installation of a thinnet Ethernet cable connects the bay controller backplanes of adjacent TSRs in multi-bay installations. The procedure to install the thinnet Ethernet cable in side-to-side installations is the same whether the installation is a cold installation a or live bay upgrade.
PROCEDURE: Use the following procedure to install the thinnet Ethernet cable to connect bay controller backplanes in side-by-side bays:
Step 1 Remove the terminator BNC connectors from Port 14 on Bay 1 and Port 7 on Bay 3.
Step 2 Connect the thinnet Ethernet cable to the BNC connector on P7 on Bay 3. Connect the other end of the thinnet Ethernet cable to the BNC connector on P14 of Bay 1 (refer to Figure 3-16).
Figure 3-16. Thinnet Ethernet Connection
Populating Bay 3 - Cold Installs
The location of router modules within the TSR bay creates the "toroidal mesh." To maximize the performance of the toroidal mesh, the iinstallation of router modules follows predefined rules.
In the initial 2-bay configuration, router module population rules require that Bay 1 be fully populated before installing additional router modules in Bay 3. Until Bay 1 is fully populated, the switchable flex connectors remain in the X Not Extended position.
To ensure optimization of the toroidal mesh during the upgrade procedure, the X axis between router modules in Bay 1 and Bay 3 are temporarily shut down before setting the switchable flex connector. After the completion of the installation of router modules in Bay 3, the switchable flex connector is set to the X Extended position.
NOTE It is critical to install router modules family pairs in predefined positions.
Router modules in a TSR II use the bay and slot number as their identifier. For example, in a single-chassis system, module 1/5 identifies the module that resides in chassis 1, slot 5.
CAUTION (C:3-1) Risk of electrostatic damage. When handling modules, wear a grounded antistatic wrist strap or equivalent protection to avoid damaging electrostatic parts.
In addition, the TSR II accepts router modules from two module families. Table 3-1 shows module family designations.
Roman numerals on the faceplate labels of Family 2 router modules identify the modules as belonging to Family 2. Figure 3-17 shows a 4-Port OC-48c faceplate label identifying the module as belonging to Family 2.
Figure 3-17. Family 2 Label Identification
Populating Bay 3
The show population command determines the optimum router module population order. The show population command displays configurations supporting an optimized overall population. If the command determines the optimized configuration may be to add modules to the first bay before populating the second bay, this is what is displays. To ensure optimum performance, use the show population command when inserting router modules.
Because each TSR configuration differs due to different ratios of Family 1 and Family 2 modules, use of the the CLI command - show population - is required. The CLI show population command dynamically assesses each configuration and instructs users where to install the next module pair.
Because there may be instances where an installer does not have immediate access to the CLI command line upon installation, this document addresses the initial installation of four router modules.
NOTE The CLI command show population always takes precedence.
CAUTION (C:3-2) Risk of electrostatic damage. When handling modules, wear a grounded antistatic wrist strap or equivalent protection to avoid damaging electrostatic parts.
The rules for populating the TSR II bay with route controllers and router module pairs are as follows:
- All antistatic precautions are to be followed while handling and installing modules.
NOTE It is critical to install routing modules and route controller modules in predefined position
- The route controller modules are restricted to slots S1, S2, S3, and S4. When only one route controller is installed, it should be in S4. Slots S3, S2, and S1 should be filled with filler modules
NOTE The primary route controller is configured with the lowest server ID.
- Secondary route controllers should be installed in slots S3, S2, and then S1, respectively.
- All route controllers are red dot route controllers. The red dot is on the top of the module.
NOTE Do not insert router modules into a dedicated server module slot as this may damage the VHDM connector. If you accidentally insert a router module into a dedicated server slot, you must inspect the VHDM connector for damage prior to inserting the module into a module slot.
- The TSR II accepts only red labled modules. Module color is located on the top of the module and on each slot.
- Initial installation of router modules requires installation of 4 modules per bay.
- A module is identified by bay number/slot number; i.e., 1/10 would be chassis 1, slot 10.
- Empty server and router slots must be filled with either a router module or a filler module within 5 minutes of removing a module.
- Router modules must be added in Family pairs. That is, you must install two Family 1 modules OR two Family 2 modules (see Figure 3-18). Roman numerals on the Family 2 module faceplate identify Family 2 modules (see Figure 3-17).
- If inserting modules into an additional bay, use the keyword t with the show population command to indicate additonal bays.
Figure 3-18. Sample Initial Installation of Module
(4 Family 2 modules)
- Depending on your particular configuration, install the first four router modules following the order outlined in Table 3-2 "Initial Router Module Population:"
Table 3-2. Initial Router Module Population Module Family Combinations Family 1 Family 2 Initial Population 1
4
35&36, 25&26
2
4
33&38, 23&28
3
2
2
Family 1: 35&36
Family 2: 33&38
NOTE Do not insert router modules into a dedicated server module slot as this may damage the Very High Density Metric (VHDM) connector. If you accidentally insert a router module into a dedicated server slot, you must inspect the VHDM connector for damage prior to inserting the module into a module slot.
- After installation of the first four router modules, use the show population CLI command - specifying the module family - to identify the next slot to populate.
Example: Use the show population t f2 4 command to determine the next slot to be populated for a Family 2 module. The following example shows 4 Family 2 modules.
router#show population t f2 4
1. Insert Family 2 into slot 3/33
2. Insert Family 2 into slot 3/38
3. Insert Family 2 into slot 3/23
4. Insert Family 2 into slot 3/28
Module Placement for Bay 1:
1 2 3 4 5 6 7 8 9 10
===========================
Shelf 1 || I I I I I | I I I I I ||
---------------------------
Shelf 2 || S I I I I | I I I I - ||
---------------------------
Shelf 3 || I I I I I | I I I I I ||
---------------------------
Shelf 4 || I I I I I | I I I I I ||
===========================
(-=Empty, P=Present, I=Identified, N=New Module Location, O=Occupied, S=Server, U=Unknown
Module Placement For Bay 3:
1 2 3 4 5 | 6 7 8 9 10
===========================
Shelf 1 || - - - - - - - - - -||
---------------------------
Shelf 2 || - - - - - - - - - -||
---------------------------
Shelf 3 || - - N - - - - N - -||
---------------------------
Shelf 4 || - - N - - - - N S4
(-=Empty, P=Present, I=Identified, N=New Module Location, O=Occupied, S=Server, U=Unknown
Refer to Ipriori CLI Reference and Configuration Guides (Vol. 1) for further information on the show population command. An the online version of the manual is available at http://www.avici.com/documentation.
Identifying the Switchable Flex Connector
When populating Bay 3, it is necessary to determine the corresponding switchable flex connector providing the pathway for the router modules in Bay 1 and Bay 3. It is critical to install router modules in predefined positions and to open only the path through the switchable flex connector that supports that particular module pair.
To assist in determining the module to switchable flex connector relationship, each router module installed in a bay has a specific slot number. Router module slots in each TSR II bay are numbered 1 through 40. Refer to Figure 3-19 for slot numbering in TSR II bays. In addition, the switchable flex connector providing the pathway is labeled on the EMI enclosure on the rear of the bay. These labels show router module pair numbers and predefine the paths between module pairs in adjoining bays (refer to Figure 3-20).
NOTE To aid in understanding this process, the router module pair 35 and 36 serves as an example throughout this section for module installation in Bay 3.
For example, in order to install router module pairs in slots 35 and 36 in Bay 3, it is necessary to turn the switchable flex connector to the X Extended position for this router module pair. For the pair in slots 35 and 36, the switchable flex connector labeled with these router module pairs provides the pathway between the modules. The switch on this flex connector needs to be turned to the X Extended position. Figure 3-20 shows the switch able flex connector in the X Extended position for router modules 35 and 36.
Figure 3-19. TSR II - Shelf and Slot Numbering
Figure 3-20. Switchable Flex Connector Numbering
Table 3-3 outlines the router module pairs and the corresponding locations of the switchable flex connector. Before installing modules, refer to Table 3-3 and Figure 3-21 "Representation of Numbering Labels on EMI Enclosures" to locate the predefined positions of switchable flex connectors.
Figure 3-21. Representation of Numbering Labels on EMI Enclosures
Setting the Switchable Flex Connector
After identifying the correct switchable flex connector for each router module pair being installed, the router modules in Bay 3 are installed, cabled, and booted up. To ensure optimization of the toroidal mesh during this upgrade procedure, the X axis to the new modules is temporarily shut down before setting the switch knob on the flex connector to the X Extended. Then, the X axis from the modules in Bay 1 to the modules in Bay 3 is re-enabled to establish communication between the router modules.
When first installed between Bays 1 and 3, the switchable flex connector is set to X Not Extended position. When the switch is set to X Not Extended position, there is no connectivity between adjacent bays. In order to provide the communication pathway between the bays, the switch knob must be set to X Extended. With the switch knob is set to X Extended, the modules in Bays 1 and 3 can communicate.
Each module pair installed in an adjoining bay requires the switch knob to be set to X Extended position to support the communication between the module pairs in both bays. Labels on the EMI enclosures identify the slot numbers and the X Not Extended/X Extended positions.
PROCEDURE: The general procedure to install modules in Bay 3 and to set the switch knob on the switchable flex connectors is as follows:
Step 1 Following population rules, insert the module pair into the Bay 3. According to the population rules, this is router module pair 35 and 36.
Step 2 Connect fiber optic cabling to installed router module. If this is a SAM module in a TSR II bay, install the Ethernet cable.
Step 3 Boot up the modules 35 and 36 in Bay 3.
Step 4 Use the shutdown fabric link command to shut down the fabric link on the X minus axis for modules 35 and X plus for module 36 in Bay 1.
Step 5 Use the end command to return to configuration mode.
router(config)#module 1/35
router(config-module)# shutdown fabric link xminus
router(config)#module 1/36
router(config-module)# shutdown fabric link xplus
Step 6 Determine the corresponding switchable flex connector providing the pathway (X axis) between the bays. Refer to labels on EMI enclosures. For router module pair 35, 36, the connection marked +35/-36 in Bay 3 is the correct switch connector (refer to Figure 3-20 "Switchable Flex Connector Numbering").
Step 7 Set the switchable flex connector knob to the X Extended position on the flex connector for modules being installed (refer to Figure 3-20).
Step 8 Use the no shutdown fabric link command to bring up the fabric link on the X minus for router modules 35 and 36 Bay 1.
- For example:
router(config)#module 1/35
router(config-module)# no shutdown fabric link xminus
router(config)#module 1/36
router(config-module)# no shutdown fabric link xplus
The router modules in Bay 3 receive keepalive messages from the router modules in Bay 1 and communication is established.
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Copyright © 2003
Avici Systems Inc.
Avici® and TSR®
is a registered trademark of Avici Systems Inc.
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trademarks of Avici Systems Inc.
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