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Using HP-UX VLANs
HP 9000 Networking for HP-UX 11i
Manufacturing Part Number: T1453-90001
E0302
U. S. A.
© Copyright 2002 Hewlett-Packard Company.
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Legal Notices The information in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be held liable for errors contained herein or direct, indirect, special, incidental or consequential damages in connection with the furnishing, performance, or use of this material. Warranty. A copy of the
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Contents 1. What are HP-UX VLANs? HP-UX VLAN Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Benefits of HP-UX VLANs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Types of VLANs Supported by HP-UX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 HP-UX VLAN Tagging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Contents Using lanadmin to Delete a VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 A. Troubleshooting Diagnostic Flowcharts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Flowchart 1: Link Level Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Flowchart 1a: Linkloop Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Tables Table 1-1. Needed Patches for HP-UX VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Table 2-1. Summary of VLAN Tagging Assignment . . . . . . . . . . . . . . . . . . . . . . . . . 24 Table 2-2. Allowable Values for Parameters in vlanconf File . . . . . . . . . . . . . . . . . . 29 Table 2-3. ToS to 802.1 User Priority Mappings Based on IP Precedence . . . . . . . . 32 Table 2-4. Allowable Settings for VLAN_PRI_OVERRIDE Value in vlanconf File . 33 Table 2-5. Allowable
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Tables 6
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Figures Figure 1-1. VLANs (Virtual LANs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 1-2. IEEE 802.1Q VLAN Tag in Ethernet Frame. . . . . . . . . . . . . . . . . . . . . . 15 Figure 1-3. VLANS Overlapping or Sharing the Same LAN Card Port . . . . . . . . . . 16 Figure 2-1. Communication between VLANS Requires an External Router . . . . . . 22 Figure 2-2. Tagged and Untagged VLAN Technology in Same Network . . . . . . . . . 23 Figure 2-3. VLANs and Serv
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Figures 8
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1 What are HP-UX VLANs? Chapter 1 9
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What are HP-UX VLANs? A Virtual LAN (VLAN) is a logical or virtual network segment that can span multiple physical network segments. Using VLANs, you can group switched-network end-stations by: • department, such as engineering and manufacturing, • type of user, such as power users or those with special needs, • application, or • project instead of physical location (Figure 1-1). Figure 1-1 VLANs (Virtual LANs) End Users Switches Internetwork Servers Router LAN 2 Physical View Marketing VLAN Int
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What are HP-UX VLANs? VLANs create broadcast domains using switches instead of routers. While VLANs in some environments may reduce the number of routers needed (and their latency), you still need a router if you want the VLANs to communicate with each other. Chapter 1 11
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What are HP-UX VLANs? HP-UX VLAN Features HP-UX VLAN Features Following are some of the features of HP-UX VLANs: • HP-UX VLANs are implemented with host-based IEEE 802.1Q/p compliant tagging to allow configuring multiple VLANs on a given Ethernet LAN card based on their IP-subnet, protocol, or LAN card port. • HP VLANs are for use over fast Ethernet or gigabit Ethernet LAN cards running on HP-UX 11i (11.11) PA-RISC-based servers and workstations. HP-UX supports up to 1024 VLANS per LAN card port.
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What are HP-UX VLANs? Benefits of HP-UX VLANs Benefits of HP-UX VLANs The advantages of HP-UX VLANs are: • Physically dispersed workgroups can be logically connected within the same broadcast domain to appear as if they are on the same physical LAN. • A single physical link can simultaneously serve several IP subnets when subnet-based VLANs are configured on that link. • Switches no longer need to classify and tag traffic. They focus on forwarding packets. • Workgroups requiring increased security c
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What are HP-UX VLANs? Types of VLANs Supported by HP-UX Types of VLANs Supported by HP-UX The types of HP-UX VLANs that you can create are as follows: • NIC-Port Based--A group of physical LAN card ports belong to the same layer-2 broadcast domain. Each LAN card port transmits and receives frames belonging to the VLAN associated with that port. Members of the same port-based VLAN all have the same VLAN ID. A VLAN ID uniquely identifies the VLAN to which a frame belongs. • Protocol Based--Common p
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What are HP-UX VLANs? HP-UX VLAN Tagging HP-UX VLAN Tagging Network switches and end stations that know about VLANs are said to be VLAN-aware. Network switches and end stations that can interpret VLAN tags are said to be VLAN-tag-aware. HP-UX VLAN-tag-aware end stations add VLAN tags to standard Ethernet frames--a process called explicit tagging. A VLAN tag (Figure 1-2) identifies which VLAN a data frame belongs to and enables traffic from more than one VLAN to use the same switch or LAN card port
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What are HP-UX VLANs? HP-UX VLAN Tagging Figure 1-3 VLANS Overlapping or Sharing the Same LAN Card Port Server HP Gigabit or Fast Ethernet LAN Card Port VLAN0 VLAN1024 16 Chapter 1
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What are HP-UX VLANs? System and Software Requirements System and Software Requirements Following are the hardware and software requirements for VLANs as of March 2002: • Type of HP System Required — HP-UX Precision Architecture (PA-RISC). • OS Required — HP-UX 11i (11.11). New HP servers and workstations shipped after March 2002 already have VLAN technology pre-installed in the operating environment. For computers shipped before March 2002, check the product Information Sheet to see if the VLAN
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What are HP-UX VLANs? System and Software Requirements Table 1-1 Needed Patches (Continued)for HP-UX VLANs (Continued) Driver 11i Patch # SAM PHCO_25866 * Either the 100Base-T or Gigabit patch may be optional depending on which link type you have. 18 Chapter 1
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What are HP-UX VLANs? Supported Switches Supported Switches HP-UX VLANs are supported with switches that implement IEEE 802.1Q-compliant VLAN tagging. The switches must implement at least port-based VLANs and must be VLAN-tag aware. The following switches are among those that support HP-UX VLANs: • HP ProCurve 9304M • HP ProCurve 4000M/8000M • Extreme Summit 7i • Cisco Catalyst 6509 Chapter 1 19
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What are HP-UX VLANs? Unsupported Functionality Unsupported Functionality HP-UX VLANs do not support the following functionality: • GARP VLAN registration protocol (GVRP) is currently not supported. HP-UX VLANs will not send GVRP messages or interpret them. • HP-UX VLANs do not operate on: — Any Itanium-based servers whether the LAN card is factory installed or customer installed. — HP-UX 11.20, 11.0, and 10.20. — FDDI, Token Ring, ATM, 100VG, EISA, and HP-PB LAN cards. 20 Chapter 1
