Ethernet Support Guide for HP-UX 11i v3

SNMP Simple Network Management Protocol. A widely used network monitoring and control protocol.
It uses devices or software processes called SNMP agents to return information about network
devices. The information is collected into a MIB (Management Information Base).
standup card A standup card plugs into a PCI slot (PCIe or PCI-X). It may be single-ported, dual-ported, or
quad-ported, providing one, two, or four physical connections to the network.
subnet mask A 32-bit mask which, when AND'd with an Internet address, determines a subnetwork address.
When the Internet address is AND'd with the subnet mask, the ones in the host portion of the
subnet mask will “overwrite” the corresponding bits of the host portion of the Internet address,
resulting in the subnet address. For more information about subnet masks, see the HP-UX IP Address
and Client Management Administrator's Guide HP-UX 11i v2, HP-UX 11i v3 available at the
following location (scroll through the User Guide section):
www.hp.com/go/hpux-networking-docs-11iv3
subnetwork Small discrete physical networks connected by gateways that share the same network address
space. For more information about subnetworks and subnet addressing, see the HP-UX IP Address
and Client Management Administrator's Guide HP-UX 11i v2, HP-UX 11i v3 available at the
following location (scroll through the User Guide section):
www.hp.com/go/hpux-networking-docs-11iv3
switch A network interconnection device that allows multiple connected senders and receivers to
communicate simultaneously in contrast to a hub (repeater) where only one device can send at
a time. Some switches have fixed port speeds (10 or 100 Mbit/s) while others allow port speeds
to be configured or autonegotiated.
TCP Segmentation
Offload (TSO)
A mechanism by which the host stack offloads certain portions of outbound TCP packet processing
to the network interface card (NIC) thereby reducing host CPU utilization.
topology The physical and logical geometry governing placement of nodes in a computer network. Also,
the layout of the transmission medium for a network.
unshielded twisted
pair (UTP)
A data cable type consisting of pairs of wires twisted together without an electrically shielding
jacket.
UTP See unshielded twisted pair (UTP).
Virtual Connect HP Virtual Connect extends the benefits of virtualization beyond the server to the rest of the
infrastructure. Virtual Connect virtualizes server-to-network connections. It provisions LAN and
SAN connectivity for BladeSystem server blades through administration of a Media Access Control
(MAC) address and a World Wide Port Names (WWPN) address. This allows server administrators
to independently manage blade servers and their connectivity, maintaining high availability
connections and securely administering MAC addresses and WWPNs. With Virtual Connect, a
server profile holds the MAC addresses and WWPNs constant, so the server administrator can
easily apply the same networking profile to new hardware.
See also Flex-10, FlexFabric.
Virtual LAN (VLAN) VLANs are a mechanism to determine which end stations should receive broadcast traffic, since
it should not be sent arbitrarily to every connected user. Each packet transmitted by an end-station
is assigned to a VLAN. An end-station only receives all the multicast and broadcast traffic on the
LANs to which it belongs, and an end-station receives unicast traffic addressed to it on the VLAN
to which it belongs.
World Wide Port
Names (WWPN)
address
A World Wide Name assigned to a port in a Fibre Channel fabric. Used on storage area
networks, it performs a function equivalent to the MAC address in Ethernet protocol, as it is
supposed to be a unique identifier in the network.
73