Table B-39auto-negotiate Syntax Description

 

 

 

Syntax

 

Description

 

 

 

ip

 

Enter the IP address of the target host.

 

 

 

gid

 

Refers to the Global ID of the host HCA.

 

 

 

ext

 

Refers to the GID extension

 

 

 

qpn

 

Refers to the Queue-Pair number of the host.

 

 

 

port#/slot#

 

identifies the chassis port being accessed by the target host.

 

 

 

Command Modes: Global-configuration mode.Privilege Level: InfiniBand read-write user.

Usage Guidelines: The system supports dynamic ARP, so any IP host connected to an IB interface port may see or detect all the other connected IPoIB and IP hosts. Connected IPoIB hosts are automatically detected by the subnet manager, queried for their network information, and their information is added to the system routing table. The routing table associates an IP address with a host GID (Global ID).

Static ARP addresses are assigned to InfiniBand interface ports to ensure these ports connect to the correct network hosts.

An ARP table contains the currently available ARP records in the gateway. An ARP record may be dynamically learned or statically created. For the most part, you may rely upon dynamic ARP addressing. Dynamic ARP records may be deleted from the table after a period of time or updated if a host address-change is detected (some gateway functions are not supported by HP InfiniBand).

Examples:

HP-IB(config)# arp ib 10.2.0.50 gid fe:80:00:00:00:00:00:00:00:05:ad:00:00:00:16:97 qpn 2 115/0

Defaults: This command has no defaults.

clear ib arp-cache

Synopsis: The clear ib arp-cachecommand removes accumulated IPoIB addresses from the ARP routing table.

Syntax: clear ib arp-cacheCommand Modes: Privileged-execute mode.

Privilege Level: InfiniBand read-write user.

Usage Guidelines: Under what circumstances might you want to do this?

Examples:

HP-IB# clear ib arp-cache

HP-IB#

Defaults: This command has no defaults.

Related Commands: “arp ib” (page 177)

default ip ip-over-ib-mtu

Synopsis: The default ip ip-over-ib-mtucommand resets the maximum size of the payload of IP-over-IB traffic back to the default size.

Syntax: default ip ip-over-ib-mtu

Command Modes: Global-configuration mode.

Privilege Level: Ethernet and InfiniBand read-write users.

Usage Guidelines: The maximum transmission unit is described in terms of payload size. TCP uses the MTU to determine the maximum payload allowed for every transmission. Too great a value can overwhelm routers and result in data retransmission. Too small a value results in

178 Switch Command Line Interface