Qlogic SANsurfer iSCSI HBA CLI Guide de l'utilisateur télécharger pdf (Page 34)

4 – Interactive Mode Commands

HBA Options Menu

4-12 SN0054621-00 B

TCP_SLP_SA on, off When this parameter is on, the HBA is

enabled as an initiator to make SA SLP

queries to discover iSCSI targets.

TCP_DHCP on, off When this parameter is on, the HBA

utilizes DHCP to obtain its IP address,

gateway IP address, and subnet mask.

TCP_DNS_Via_DHCP on, off When this parameter is on and the

TCP_DHCP parameter is on, the HBA

obtains the DNS server address from the

DHCP server.

TCP_SLP_DA_Via_DHCP on, off When this parameter is on and the

TCP_DHCP parameter is on, the HBA

obtains the SLP DA address from the

DHCP server.

TCP_Nagle on, off When this parameter is on, the HBA

supports the Nagle algorithm. Therefore,

when a TCP connection has outstanding

data that has not been acknowledged

(ACK’d), small data segments cannot be

sent until the ACKs arrive. These data

segments are collected by TCP and sent

in a single segment when the ACKs

arrive. This feature helps control

congestion.

TCP_Timer_Scale

— Each TCP timer in the HBA is referenced

to a local timer and is defined as a number

of local timer ticks. The

TCP_Timer_Scale parameter is a scale

factor that adjusts the time interval

between timer ticks on a per connection

basis. The scale factor allows for faster

timeouts for connections running on a

very small network, versus connections

running on a very large network.

Table 4-1. HBA Firmware Settings (Continued)

Parameter Value Description

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 79 80

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Qlogic SANsurfer iSCSI HBA CLI Guide de l'utilisateur Page 34