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sam-timeout-multiplier
Specifies the number of additional module discovery periods to be added to the base period in which a successful discovery response must be received by the route controller before the primary SAM switches to the backup SAM.
Syntax: [no] sam-timeout-multiplier multiplier
multiplier
Specifies the number of additional module discovery periods to be added to the base period in which a successful discovery response must be received by the route controller before the primary SAM switches to the backup SAM. Valid Values: 0 - 4294967295. Default Value: 1.
Description: The Server Attached Module (SAM) acts as a proxy for any communications between the primary route controller and all other modules. A primary SAM will switch to its backup when a module discovery response is not received by the route controller during a configured discovery period.
The viability of route controller to module communications is monitored by an IPriori module discovery protocol. This module discovery protocol sends out discovery messages and listens for a response. The base timeout period for this discovery exchange is 3 seconds in length. The actual timeout period consists of the base and the number of additional periods configured. If no discovery response is received within the configured discovery period, the primary SAM will switch to the backup. During periods of high congestion, it is possible that the discovery exchange will not take place during a discovery timeout period. Adding an additional discovery period can avoid needless primary SAM to backup SAM flips. The sam-timeout-multiplier command provides for adding additional timeout periods before a switch from primary SAM to backup occurs. The default value is 1. This configures for one additional discovery timeout period, i.e. a timeout period of 6 seconds.
Use the sam-timeout-multiplier command to specify the number of additional timeout periods to be added to the base period within which a successful discovery response must be received by the route controller to avoid a primary SAM to backup SAM flip.
Use the no sam-timeout-multiplier command to reset the configured timeout period to the default value.
Factory Default: Multiplier = 1.
Command Mode: Global Configuration.
Example 1: In the following example the module discovery period multiplier is set to 2 using the sam-timeout-multiplier command. The current value is displayed using the show server verbose command:
router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
router(config)#sam-timeout-multiplier 2
router(config)#end
router#show server verbose
Server ID 5
Server: full - Controls all slots in bay 1
Location (bay/slot): 1/10
Server State: Primary
Primary server Id: 5
Backup server Id: none
Current Server Access Module: 1/7, on Eth2
Backup Server Access Module: 1/6, on Eth1
IPriori release version: 6.0.1091
Operational image version: Platform: srvc-d; Label: R6.0_DEV.91, Built on Jan 24 2004, 10:03:46
ROM Version: IPriori Bootrom Release 6.25 built Oct 1 2003, 17:30:18
BSP version: 2.2/1
CPU: Avici-04927/MPC7455
Total bytes: 2107846656 bytes
Free bytes: 1968343616 bytes
Disk Drive is : A
Server's CLEI Code: IP41K50EAA
Serial Number: RAMCSR000539
Product ID: HA-ROUTE-SRV (Rev. ACCA)
Date Code: 11/13/2003
DIMM1 Manufacture date (YY-WW): 03-19
DIMM2 Manufacture date (YY-WW): 03-19
DIMM3 Manufacture date (YY-WW): 03-19
DIMM4 Manufacture date (YY-WW): 03-19
Last started on MON JAN 26 20:34:06 2004
Server uptime is 2 weeks, 1 day, 21 hours, 4 minutes, 52 seconds
Max number of historical logging files: 5
Primary Preference is: 20
Number of unplanned restarts: 0
Current error threshold for triggering SAM flipping: 3
Current multiplier used for extending SAM link timeout: 2
router#
Example 2: In the following example the module discovery period multiplier is reset to the default. The current threshold value is displayed using the show server verbose command:
router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
router(config)#no sam-timeout-multiplier
router(config)#end
router#show server verbose
Server ID 5
Server: full - Controls all slots in bay 1
Location (bay/slot): 1/10
Server State: Primary
Primary server Id: 5
Backup server Id: none
Current Server Access Module: 1/7, on Eth2
Backup Server Access Module: 1/6, on Eth1
IPriori release version: 6.0.1091
Operational image version: Platform: srvc-d; Label: R6.0_DEV.91, Built on Jan 24 2004, 10:03:46
ROM Version: IPriori Bootrom Release 6.25 built Oct 1 2003, 17:30:18
BSP version: 2.2/1
CPU: Avici-04927/MPC7455
Total bytes: 2107846656 bytes
Free bytes: 1968332592 bytes
Disk Drive is : A
Server's CLEI Code: IP41K50EAA
Serial Number: RAMCSR000539
Product ID: HA-ROUTE-SRV (Rev. ACCA)
Date Code: 11/13/2003
DIMM1 Manufacture date (YY-WW): 03-19
DIMM2 Manufacture date (YY-WW): 03-19
DIMM3 Manufacture date (YY-WW): 03-19
DIMM4 Manufacture date (YY-WW): 03-19
Last started on MON JAN 26 20:34:06 2004
Server uptime is 2 weeks, 1 day, 21 hours, 8 minutes, 27 seconds
Max number of historical logging files: 5
Primary Preference is: 20
Number of unplanned restarts: 0
Current error threshold for triggering SAM flipping: 3
Current multiplier used for extending SAM link timeout: 1
router#
Related Commands: show server verbose
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Copyright © 2005
Avici Systems Inc.
Avici® and TSR®
is a registered trademark of Avici Systems Inc.
IPriori™, Composite Links™, SSR™, QSR, and NSR® are
trademarks of Avici Systems Inc.
Source
File Name: sys_mgmt.fm
HTML File Name: sys_mgmt34.html
Last Updated: 02/25/05 at 14:26:49