VLAN 2 includes the Main Server, Clients 1 and 2 by means of a shared media segment, and Client 5. This is a software development group.

VLAN 3 includes the Main Server, the Accounting Server and Client 4. This is an accounting group.

The Main Server is a high-use server that needs to be accessed from all VLANs and IP subnets. The server has a Sun 10-Gigabit Ethernet adapter installed. All three IP subnets are accessed by means of the single physical adapter interface. The server is attached to one of the switch’s Gigabit Ethernet ports, which is configured for VLANs 1, 2, and 3. Both the adapter and the connected switch port have tagging turned on. Because of the tagging VLAN capabilities of both devices, the sever is able to communicate on all three IP subnets in this network, but continues to maintain broadcast separation between all of them. The following list describes the components of this network:

The Accounting Server is available to VLAN 3 only. It is isolated from all traffic on VLANs 1 and 2. The switch port connected to the server has tagging turned off.

Clients 1 and 2 are attached to a shared media hub that is then connected to the switch. They belong to VLAN 2 only, and are logically in the same IP subnet as the Main Server and Client 5. The switch port connected to this segment has tagging turned off.

Client 3 is a member of VLAN 1, and can communicate only with the Main Server and Client 5. Tagging is not enabled on Client 3’s switch port.

Client 4 is a member of VLAN 3, and can communicate only with the servers. Tagging is not enabled on Client 4’s switch port.

Client 5 is a member of both VLANs 1 and 2, and has a Sun 10-Gigabit Ethernet adapter installed. It is connected to switch port 10. Both the adapter and the switch port are configured for VLANs 1 and 2 and have tagging enabled.

VLAN tagging is only required to be enabled on switch ports that create trunk links to other VLAN-aware Ethernet switches, or on ports connected to tag-capable end- stations, such as servers or workstations with VLAN-aware adapters.

Configuring VLANs

VLANs can be created according to various criteria, but each VLAN must be assigned a VLAN tag or VLAN ID (VID). The VID is a 12-bit identifier between 1 and 4094 that identifies a unique VLAN. For each network interface (ixge0, ixge1, ixge2 and so on), 4094 possible VLAN IDs can be selected. Only 512 unique IDs can be used simultaneously. Because IP subnets are commonly used, it is best to use IP

Chapter 4 Configuring VLANs 39

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Sun Microsystems Ethernet PCI-X Adapter manual Configuring VLANs

Ethernet PCI-X Adapter specifications

The Sun Microsystems Ethernet PCI-X Adapter stands as a pivotal component for enhancing network performance in various computing environments. Designed to cater to the demanding needs of enterprise networks, this adapter provides a seamless integration of high-speed connectivity with robust hardware design, making it a preferred choice for businesses relying on Sun systems.

One of the standout features of the Sun Ethernet PCI-X Adapter is its adherence to the PCI-X interface, which allows for faster data transfer rates compared to traditional PCI. With speeds of up to 1 Gbps, this adapter supports larger data throughput, significantly improving the efficiency of data-intensive applications. The PCI-X standard, operating at an impressive 64-bit bus, not only enhances performance but also ensures backward compatibility with earlier PCI standards, offering flexibility in deployment.

In terms of network connectivity, the adapter supports both 10/100/1000 Mbps Ethernet speeds, allowing it to automatically negotiate the best speed based on network conditions. This feature is particularly advantageous for enterprises with diverse networking equipment, enabling seamless integration without compromising on performance.

The Sun Microsystems Ethernet PCI-X Adapter comes equipped with advanced technologies such as Jumbo Frames support. This allows for the transmission of larger packets over the network, which is beneficial for applications that require the movement of substantial amounts of data, like video streaming or large file transfers. By facilitating Jumbo Frames, the adapter minimizes CPU load and enhances overall throughput, leading to better resource utilization.

Another noteworthy characteristic of this adapter is its robust error checking and correction capabilities. This ensures data integrity during transmission, reducing the likelihood of packet loss and improving the reliability of network communications. Coupled with support for multiple protocols, including TCP/IP, the Ethernet PCI-X Adapter provides versatility, adapting to various network configurations and applications.

Furthermore, the adapter boasts a high-performance driver suite, which enhances its compatibility across different operating systems, ensuring smooth integration into existing network environments. The flexibility and scalability of this adapter make it an ideal solution for current and future network demands.

In conclusion, the Sun Microsystems Ethernet PCI-X Adapter delivers exceptional performance, reliability, and versatility, making it an essential asset for enterprises seeking to enhance their networking capabilities. Whether for upgrading existing infrastructure or supporting new applications, this adapter stands out as a dependable choice for high-speed connectivity in the constantly evolving technology landscape.