Cabletron Systems SmartSwitch 9500 Hardware And Installation Manual

Also see for 9A656-04: Configuration guide Addendum Configuration guide

Cabletron Systems SmartSwitch 9500 Hardware And Installation Manual Manual pdf 26 page image

Operation3-4System Management BusesThere are two management channels within the SmartSwitch 9500 system:• SMB-1• SMB-10These buses provide out-of-band management and inter-module managementcommunication.SMB-1 BusThe SMB-1 is a 1 Mbps management bus located within the SmartSwitch 9500chassis. This bus is used by all diagnostic controllers in the system, including thefollowing:• Connectivity modules• Power supply modules• The environmental moduleThe SMB-1 transports inter-chassis information between system components,such as power and environmental information, as well as diagnostic messages.Periodic loop-back tests are performed by all modules that share this bus toensure the validity of SMB-1. In the event a failure is detected on SMB-1, the SMB-10 may be used as an alternate communication channel.SMB-10 BusThe SMB-10 is a 10 Mbps management bus located within the SmartSwitch 9500chassis, which is also used for inter-chassis communication of modules, as well asserving as an out-of-band management channel into the SmartSwitch 9500. TheSMB-10 is externalized from the chassis via an optional Ethernet Port InterfaceModule (EPIM) located on the front of the environmental module. Through anEPIM connection, full SNMP management of the SmartSwitch 9500 is availableout-of-band from user data. Modules that share the SMB-10 bus periodically sendout loopback packets to ensure the validity of the SMB-10. In the event a fault isdetected on the SMB-10, the SMB-1 can be used as an alternate communicationchannel by the modules.