Network Protocol, Routing Protocol | 3Com 6000, 5000 specification

3Com Router 5000 and Router 6000 Family

Release Notes v2.41 • Page 12

•When removing FRF.9 compression settings from a frame relay static address mapping, the interface needs to be reset (shutdown/undo shutdown) for the configuration to take place.

•When the ATM OAM and PVC states are all down, the ATM interface is still showing state:UP and Line:UP; Use “display atm pvc-info” to see the true state of the individual PVCs.

•ATM statistics may be wrong if the traffic rate exceeds the Class of Service settings configured.

•PPP STAC compression is not supported on the POS interface.

•ATM OAM up/down timers for transitioning the PVC State are not accurate.

•ATM T3/E3 Modules require all cables to be connected before link LEDs will be lit.

•Changing MLPPP parameters will not take effect until the Virtual-Template or Mp-group is reset via bringing down all the physical interfaces and bringing them back up again.

3.6Network Protocol

•Basic NAT doesn’t work on R6080/R6040.

•PPP, Frame relay, HDLC, and E1 interfaces do not support DHCP Global subaddress mode.

•Certain web sites cannot be accessed when using DSL interfaces. To resolve this, set the outgoing router (WAN) physical or virtual interface to 1410 as the maximum segment size for TCP.

•The DHCP Server does not remember the DHCP clients after a reboot. The DHCP lease expiration, client reboot or client renew request will repopulate the DHCP clients table transparent to the user.

•A Router running DHCP client cannot obtain the default gateway address automatically. This parameter must be manually configured.

•ICMP type 3 messages are generated for some but not all instances in RFC 1812 (Section 5.2.7.1).

3.7Routing Protocol

•Where Static Routes point to Ethernet interfaces, ARP responses are ignored. The next-hop must be specified for static routes on Ethernet interfaces.

•When BGP changes states, minor packet loss will occur at the instance of the change, for any packet passing through the router.

•OSPF interface costs are not the same on peer DCE/ DTE Frame Relay Serial interfaces. If a Frame Relay DTE Serial interface is configured for OSPF, and the DCE has a differing baud rate, the interface has to be configured with the “virtualbaudrate” command. Configure this command using the same baud rate as the DCE. After configuring, shut down and restart the interface.

•Undo RIP from interface view removes RIP globally. To remove RIP from interface view use the command, “Undo RIP work.”

•BGP route dampening does not work for IBGP routes. BGP dampening is designed to work only for EBGP routes

•The 3Com router will not exchange RIP Updates with various 3rd Party vendor’s equipment when MD5 “usual” implementation is configured. The 3Com router will only exchange RIP Updates with a 3rd Party vendor’s equipment when MD5 “Non-Standard” implementation is configured. Use “Usual” to exchange RIP Updates between 3Com routers.

5000, 6000 specifications

The 3Com 6000 series, launched in the late 1990s, was a significant advancement in networking technology, designed to meet the growing demands of enterprise-level networking. This series provided powerful solutions for businesses seeking reliable, efficient, and scalable networking capabilities.

At its core, the 3Com 6000 series featured a modular design, allowing companies to customize their networks according to specific needs. This flexibility meant that organizations could add or replace components as their networking requirements evolved, ensuring investment protection and a tailored approach to connectivity. The ability to scale was particularly important for businesses that anticipated growth or change in operational demands.

One of the standout features of the 3Com 6000 was its advanced switching capabilities. The series employed high-performance switching technologies that supported various protocols, including Fast Ethernet and Gigabit Ethernet. This versatility made it suitable for diverse environments, from small offices to large corporate settings. The 3Com 6000 switches were engineered to deliver high throughput and low latency, crucial for applications requiring real-time data transfer.

The series also supported a range of network management tools, enhancing operational efficiency. With SNMP (Simple Network Management Protocol) support, network administrators could easily monitor and manage network performance, troubleshoot issues, and configure devices from a centralized location. This capability significantly streamlined network operations, reducing downtime and optimizing resource allocation.

Security was another significant concern addressed by the 3Com 6000. The series incorporated robust security features, including access control lists (ACLs) and VLAN (Virtual Local Area Network) support. These features allowed network administrators to segment traffic and enforce security policies, protecting sensitive data and ensuring compliance with organizational standards.

Moreover, the 3Com 6000 series was designed with energy efficiency in mind, reflecting a growing awareness of the environmental impact of IT infrastructure. By implementing power-saving features, the series helped organizations reduce their overall energy consumption while maintaining optimal network performance.

In summary, the 3Com 6000 series stood out for its modularity, advanced switching capabilities, extensive management tools, strong security features, and energy efficiency. It represented a forward-thinking solution for enterprises aiming to build robust network infrastructures capable of supporting a wide range of applications and services. As organizations increasingly relied on networked systems, the 3Com 6000 played a crucial role in shaping the landscape of enterprise networking.