Administering IP Multicast Interfaces

A-3

Top-Level Menu

 

 

system

 

 

 

 

ethernet

interface

 

 

fddi

route

dvrmp

atm

arp

igmp

bridge

atmArpServer

interface

ip

multicast

tunnel

ipx

udpHelper

routeDisplay

appletalk

routing

cacheDisplay

snmp

icmpRouterDiscovery

analyzer

rip

 

 

script

ping

 

 

logout

statistics

 

 

When you select the IGMP option, the interface prompts you to enable or disable IGMP snooping mode and IGMP query mode. Both are enabled by default. Under most conditions, IGMP snooping mode and IGMP query mode should remain enabled.

To enable or disable IGMP, from the top level of the Administration Console, enter:

ip multicast igmp

The interface prompts you to enable or disable IGMP query mode and IGMP snooping mode.

Example:

Enter igmp snooping mode

(enabled/disabled)[enabled]:enabled

Enter igmp query mode (enabled/disabled) [enabled]: enabled

Administering IP

The IP multicast interface selections allow you to enable and disable

Multicast

multicast characteristics on previously defined IP interfaces. A multicast

Interfaces

interface has three characteristics, explained next.

 

DVMRP Metric Value

 

The DVMRP metric value determines the cost of a multicast interface. The

 

higher the cost, the less likely it is that the packets will be routed over the

 

interface. The default value is 1.

 

Time To Live (TTL) Threshold

 

The TTL threshold determines whether the interface will forward multicast

 

packets to other switches and routers in the subnetwork. If the interface TTL

 

is greater than the packet TTL, then the interface does not forward the

 

packet. The default value is 1, which means that the interface will forward

 

all packets.

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3Com 6000 manual Administering IP, Multicast, Interfaces

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.

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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.

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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.