HP-UX LAN Administrator's Guide (Feburary 2007)
Table Of Contents
- About This Document
- 1 New for the HP-UX 11i v3 Release
- 2 Installing HP-UX LAN
- 3 Configuring HP-UX LAN Using SAM
- 4 Manually Installing and Configuring HP-UX LAN
- 5 Troubleshooting HP-UX LAN
- Troubleshooting Overview
- Troubleshooting Q & A
- LAN Interface Card Statistics
- 100Base-T Checklist
- Diagnostic Flowcharts
- Flowchart 1: Configuration Test
- Flowchart 2: Configuration Test continued
- Flowchart 3: Configuration Test continued
- Flowchart 4: Network Level Loopback Test
- Flowchart 5: Network Level Loopback Test continued
- Flowchart 6: Transport Level Loopback Test (using Internet Services)
- Flowchart 7: Link Level Loopback Test
- Flowchart 8: LAN Connections Test
- Flowchart 9: Gateway Remote Loopback Test
- Flowchart 10: Gateway Remote Loopback Test continued
- Flowchart 11: Subnet Test
- 6 LAN Resources
- 7 Network Addressing
- Overview of Network Addressing Schemes
- Networking Terminology
- Network Addresses and Node Names
- Internet Addresses
- Subnet Addresses
- Configuring Gateways on Fixed-Length Subnets
- Variable-Length Subnet Addressing
- Configuring Gateways on Variable-Length Subnets
- Configuring Gateways on Supernets
- IP Multicast Addresses
- Virtual IP (VIP) Addresses
- CIDR - Classless Inter-Domain Routing
- 8 LAN Device and Interface Terminology
LAN Device and Interface TerminologyDRAFT COPY
Interfaces
Chapter 8142
Interfaces
HP-UX 11i v3 allows you to configure multiple IP addresses for a single physical interface.
This allows a single system to be seen as multiple systems, with multiple IP addresses and
host names, even if the system has only one physical interface card. The IP addresses
assigned to a card can generally be on the same subnet or on different subnets.
Logical interfaces are also used when an interface card is used for both IP/Ethernet and
IP/IEEE802.3 packets. (In HP-UX 11i v3, all IP packets sent over IEEE802.3 must use
Sub-Network Access Protocol (SNAP) encapsulation.) Sending IP packets using Ethernet and
sending IP packets using IEEE 802.3 over the same card requires two separate logical
interfaces. To send IP packets using Ethernet and IEEE 802.3, you must configure two logical
interfaces, with two different IP addresses. In addition, the IP addresses must be in two
different subnets. For logical interfaces with the same encapsulation, the IP addresses can be
on the same or on different subnets.
In HP-UX 11i v3, the interface names used for ifconfig and /etc/rc.config.d/netconf
statements can have a logical interface number appended to the card name. The syntax is:
nameX
[:
logical_interface_number
]
name
is the class of the interface. Valid names include lan (Ethernet LAN, Token Ring, FDDI,
or Fibre Channel links), snap (IEEE802.3 with SNAP encapsulation), atm (ATM), du
(Dial-up), ixe (X.25), or mfe (Frame Relay).
X
is the Physical Point of Attachment (PPA). This is a numerical index for the physical card in
its class.
logical_interface_number
is an index that corresponds to the logical interface for the
specified card. The default is 0. The interface name lan0 is equivalent to lan0:0, lan1 is
equivalent to lan1:0, and so on.
The first logical interface for a card type and interface is known as the initial interface. You
must configure the initial interface for a card/encapsulation type before you can configure
subsequent interfaces for the same card/encapsulation type. For example, you must configure
lan2:0 (or lan2) before configuring lan2:1. Once you have configured the initial interface, you
can configure subsequent interfaces in any order.