Dell External OEMR 1435 User Guide - Page 105

A. Most quality routers use the Rapid Spanning Tree Protocol RSTP

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Q: Why can't I connect to a console using the terminal emulation software included with my Microsoft Windows® operating system? A: The version of HyperTerminal included with Windows does not provide many functions required during console redirection. Either upgrade to HyperTerminal Private Edition 6.1 or later, or select any other terminal emulation software that supports full configuration of VT100 or ANSI emulation mode. Q. What is the Spanning Tree feature? A. Most quality routers use the Rapid Spanning Tree Protocol (RSTP) to optimize performance and remove loops. This can cause delays up to 30 seconds or more whenever a NIC is reset. Resets are known to happen during BIOS POST, driver initialization, and some network software installation and configuration. The delay can cause errors when running IPMISH commands. It can also cause a SOL proxy session to become inactivated. You can configure your router to reduce or eliminate the delay by enabling the router option edge-port (Dell™ PowerConnect™) or port fast (Cisco). This will allow the link to remain constant and handle the optimization in real time. Q: I performed a Reboot and Activate Console Redirection command using SOL Proxy, but the option to press to enter the BIOS setup never appeared. A: When the network switch has spanning-tree enabled, it takes as much as 30 to 40 seconds for the spanning-tree check to make sure there are no loops in the network. During this time, packet forwarding by the switch is blocked. Therefore, the software cannot communicate with the BMC until the spanning tree check is complete. When the spanning tree feature is enabled on a edge-port or port fast router, the network link can be broken for periods of time in excess of 30 seconds while the router analyzes the network. This situation can be identified partially when the link light is off. IPMISH commands can timeout during this process. Disable spanning-tree on the port fast router or enable the Spanning Tree Fast option and try performing a Reboot and Activate Console Redirection command using SOL Proxy again. You should now be able to enter BIOS setup by pressing . Known Issues and Frequently Asked Questions 105

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Known Issues and Frequently Asked Questions
105
Q: Why can’t I connect to a console using the terminal emulation software
included with my Microsoft Windows
®
operating system?
A: The version of HyperTerminal included with Windows does not provide
many functions required during console redirection. Either upgrade to
HyperTerminal Private Edition 6.1 or later, or select any other terminal
emulation software that supports full configuration of VT100 or ANSI
emulation mode.
Q. What is the Spanning Tree feature?
A. Most quality routers use the Rapid Spanning Tree Protocol (RSTP) to
optimize performance and remove loops. This can cause delays up to 30 seconds
or more whenever a NIC is reset. Resets are known to happen during BIOS
POST, driver initialization, and some network software installation and
configuration. The delay can cause errors when running IPMISH commands.
It can also cause a SOL proxy session to become inactivated. You can
configure your router to reduce or eliminate the delay by enabling the router
option edge-port (Dell™ PowerConnect™) or port fast (Cisco). This will
allow the link to remain constant and handle the optimization in real time.
Q: I performed a
Reboot and Activate Console Redirection
command using
SOL Proxy, but the option to press <F2> to enter the BIOS setup never
appeared.
A: When the network switch has spanning-tree enabled, it takes as much as
30 to 40 seconds for the spanning-tree check to make sure there are no loops
in the network. During this time, packet forwarding by the switch is blocked.
Therefore, the software cannot communicate with the BMC until the
spanning tree check is complete. When the spanning tree feature is enabled
on a edge-port or port fast router, the network link can be broken for periods
of time in excess of 30 seconds while the router analyzes the network. This
situation can be identified partially when the link light is off. IPMISH
commands can timeout during this process. Disable spanning-tree on the
port fast router or enable the
Spanning Tree Fast
option and try performing a
Reboot and Activate Console Redirection
command using SOL Proxy again.
You should now be able to enter BIOS setup by pressing <F2>.