Cisco MDS 9000 Series Command Reference

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23-26
Cisco MDS 9000 Family Command Reference
OL-8413-07, Cisco MDS SAN-OS Release 3.x
Chapter 23 T Commands
tcp maximum-bandwidth-mbps
tcp maximum-bandwidth-mbps
To manage the TCP window size in Mbps, use the tcp maximum-bandwidth-mbps command. Use the
no form of this command to disable this feature or revert to its factory defaults.
tcp max-bandwidth-mbps bandwidth min-available-bandwidth-mbps threshold
{round-trip-time-ms milliseconds | round-trip-time-us microseconds}
no tcp max-bandwidth-mbps bandwidth min-available-bandwidth-mbps threshold
{round-trip-time-ms milliseconds | round-trip-time-us microseconds}
Syntax Description
Defaults Enabled.
The FCIP defaults are max-bandwidth = 1G, min-available-bandwidth = 500 Mbps, and
round-trip-time =1 ms.
The iSCSI defaults are max-bandwidth = 1G, min-available-bandwidth = 70 Kbps, and
round-trip-time =1 ms.
Command Modes FCIP profile configuration submode.
Command History
Usage Guidelines The maximum-bandwidth option and the round-trip-time option together determine the window size.
The minimum-available-bandwidth option and the round-trip-time option together determine the
threshold below which TCP aggressively increases its size. After it reaches the threshold the software
uses standard TCP rules to reach the maximum available bandwidth.
bandwidth Specifies the Mbps bandwidth. The range is 1 to 1000.
min-available-bandwidth-mbps Configures the minimum slow start threshold.
threshold Specifies the Mbps threshold. The range is 1 to 1000.
round-trip-time-ms milliseconds Configures the estimated round trip time across the IP network to
reach the FCIP peer end point in milliseconds. The range is 0 to
300.
round-trip-time-us microeconds Configures the estimated round trip time across the IP network to
reach the FCIP peer end point in microseconds. The range is 0 to
300000.
Release Modification
1.1(1) This command was introduced.

Cisco MDS 9000 Series Specifications

General

Category	Switch
Operating System	Cisco NX-OS
Ports	Varies by model
Protocols	Fibre Channel (FC), Fibre Channel over IP (FCIP), iSCSI
Redundancy	Redundant supervisors, power supplies, and fans
Management	Cisco Data Center Network Manager (DCNM), CLI, SNMP
Virtualization Support	VSANs (Virtual SANs)
Security Features	Fibre Channel Security Protocol (FC-SP)
Hot Swappable Components	power supplies, fans
Power Supply Options	AC and DC options available