Compaq ProLiant 5000 Configuring the Compaq ProLiant 5000 for Microsoft Window - Page 6

What is a Bridge?, PCI Bus Numbering

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4 Configuring the Compaq ProLiant 5000 for Microsoft Windows NT Environments What is a Bridge? A PCI bridge connects two independent PCI computer buses together and allows the buses to communicate with each other. By creating hierarchical PCI buses, the PCI bridge overcomes the electrical loading limits of the PCI bus. PCI Bus Numbering PCI buses are assigned PCI bus numbers beginning with Bus # 0 for the primary PCI bus (Slots 5-8) and Bus # 1 for the secondary PCI bus (Slots 24). PCI bus numbering changes depending on how many PCI bridged controllers are installed (ex: SMART-2/P Controller) and whether they are installed in the primary or secondary PCI bus, and slot order of each bus. For example, in the default factory configuration (Table 1), the SMART-2/P controller is installed in the primary PCI bus (Slot 5), the SMART-2/P is a PCI bridged controller causing the bus numbering to change. As stated previously, the default bus numbers for the ProLiant 5000 without any bridged PCI controllers installed is Bus # 0 for the primary PCI bus and Bus # 1 for the secondary PCI bus; adding the SMART-2/P controller to the primary PCI Bus causes the bus numbers to change to Bus # 0 for the primary PCI bus, Bus # 1 for the SMART-2/P bridged PCI bus, and Bus # 2 for the secondary PCI bus. Compaq tested the installation and configuration of bridged PCI controllers and recommends that the configuration tables (Tables 1-6) be utilized to minimize the possibility of changing the bus numbers and causing device drivers such as the NETFLX3.SYS to fail when loading. The failure is due to the initial bus number used while configuring the PCI NetFlex-3 controller and adding a bridged controller that changes the bus number of the PCI bus that the NetFlex-3 controller is installed in. Windows NT does not update the network interface card configuration which causes any network interface card to fail during device driver initialization. Any time additional bridged PCI controllers are added or removed from the primary bus of an existing configuration, the secondary PCI bus number changes requiring the network interface controllers to be reconfigured

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4
Configuring the Compaq ProLiant 5000 for Microsoft Windows NT Environments
What is a Bridge?
A PCI bridge connects two independent PCI computer buses together and
allows the buses to communicate with each other.
By creating hierarchical
PCI buses, the PCI bridge overcomes the electrical loading limits of the PCI
bus.
PCI Bus Numbering
PCI buses are assigned PCI bus numbers beginning with Bus # 0 for the
primary PCI bus (Slots 5-8) and Bus # 1 for the secondary PCI bus (Slots 2-
4).
PCI bus numbering changes depending on how many PCI bridged
controllers are installed (ex: SMART-2/P Controller) and whether they are
installed in the primary or secondary PCI bus, and slot order of each bus.
For example, in the default factory configuration (Table 1
)
, the SMART-2/P
controller is installed in the primary PCI bus (Slot 5), the SMART-2/P is a
PCI bridged controller causing the bus numbering to change. As stated
previously, the default bus numbers for the ProLiant 5000 without any
bridged PCI controllers installed is Bus # 0 for the primary PCI bus and Bus
# 1 for the secondary PCI bus; adding the SMART-2/P controller to the
primary PCI Bus causes the bus numbers to change to Bus # 0 for the
primary PCI bus, Bus # 1 for the SMART-2/P bridged PCI bus, and Bus # 2
for the secondary PCI bus.
Compaq tested the installation and configuration of bridged PCI controllers
and recommends that the configuration tables (Tables 1-6) be utilized to
minimize the possibility of changing the bus numbers and causing device
drivers such as the
NETFLX3.SYS
to fail when loading. The failure is due to
the initial bus number used while configuring the PCI NetFlex-3 controller
and adding a bridged controller that changes the bus number of the PCI bus
that the NetFlex-3 controller is installed in. Windows NT does not update
the network interface card configuration which causes any network interface
card to fail during device driver initialization.
Any time additional bridged PCI controllers are added or removed from the
primary bus of an existing configuration, the secondary PCI bus number
changes requiring
the network interface controllers to be reconfigured