Chapter 7: Command-Line Management

3. Command Syntax:

clock summer-time TIMEZONE weekday WEEK DAY MONTH HOUR MINUTE WEEK DAY MONTH HOUR MINUTE OFFSET TIMEZONE Specifies the daylight saving timezone.

WEEK <1-5> Specifies starting/ending week of daylight savings time.

DAY <0-6> Specifies from Sunday to Saturday.

MONTH <1-12> Specifies from January to December.

HOUR <0-23> Specifies from 0 to 23.

MINUTE <0-59> Specifies from 0 to 59.

OFFSET <1-1440> Specifies from 1 to 1440 minutes.

clock summer-time TIMEZONE date DAY MONTH HOUR MINUTE DAY MONTH HOUR MINUTE OFFSET TIMEZONE Specifies the daylight saving timezone.

DAY <1-31> Specifies from 1 to 31.

MONTH <1-12> Specifies from January to December.

HOUR <0-23> Specifies from 0 to 23.

MINUTE <0-59> Specifies from 0 to 59.

OFFSET <1-1440> Specifies from 1 to 1440 minutes. no clock summer-time

4. Example:

The following example sets clock summer-time TIMEZONE (onehour) as daylight saving offset 60 minutes from 4 April AM0:00 to

31 October AM0:00:

switch_a(config)#clock summer-time onehour date 4 4 0 0 31 10 0 0 60 switch_a(config)#

GMRP

Clear GMRP Statistics:

1.Command Mode: Privileged Exec mode Logon to Privileged Exec Mode (Enable Mode). The switch_a# prompt will show on the screen.

switch_a#

2. Usage:

Use this command to clear GMRP statistics for a given VLAN or all the VLANs configured on the Layer-2 switch. This default clear- ing is for all the configured VLANs.

3. Command Syntax:

clear gmrp statistics [all vlanid VLANID] bridge BRIDGE_NAME all Clear GMRP statistics for all the VLANs.

VLANID vlanid <1 to 4094> Clear GMRP statistics for the particular VLAN ID.

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Black Box LEH1008A-2MMSC, LEH906A-2SFP, LEH908A, LEH906A-2MMST, LEH906A-2GSFP, LEH906A-2MMSC, LEH1104A-2GSFP, LEH1104A-2SFP Gmrp
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LEH1104A-2SFP, LEH1008A-2SFP, LEH1008A-2MMSC, LEH906A-2GSFP, LEH906A-2MMST specifications

Black Box has established itself as a leader in providing robust networking solutions, and its range of hardened managed Ethernet switches, including the LEH1104A-4MMST, LEH1008A-2MMST, LEH906A-2SFP, and LEH906A-2MMSC, exemplifies this commitment. These switches are specifically designed to withstand the harsh environments often found in industrial and outdoor settings, making them ideal for applications such as transportation, utility management, and manufacturing.

The LEH1104A-4MMST model features four 10/100/1000 Mbps Ethernet ports, providing a flexible solution for networks requiring fast and reliable connectivity. It supports Power over Ethernet (PoE), enabling both data and power to be transmitted via a single cable, thereby simplifying installations and reducing wiring costs. This model also includes advanced features such as VLAN support, IGMP Snooping, and Quality of Service (QoS), ensuring optimized traffic management and network efficiency.

Similarly, the LEH1008A-2MMST switch offers eight ports and is built to handle a higher volume of connections without sacrificing performance. It boasts Layer 2 and Layer 3 management capabilities, allowing for complex network configurations and enhanced security measures such as port security and access control lists. The robust design and metal enclosure protect it from dust, moisture, and extreme temperatures.

The LEH906A-2SFP and LEH906A-2MMSC switches focus on modularity and connectivity flexibility, with SFP (Small Form-factor Pluggable) ports that enable users to choose the appropriate transceivers for their specific distances and media types, whether they require fiber or copper connections. Both models support dual-power inputs for redundancy and reliability, critical features for mission-critical applications.

All these switches are crafted to comply with industrial standards, ensuring reliable performance in diverse applications. Features such as redundant power supplies, fast recovery times, and support for protocols like SNMP (Simple Network Management Protocol) make network monitoring and management efficient and hassle-free.

In summary, Black Box’s hardened managed Ethernet switches, including the LEH1104A-4MMST, LEH1008A-2MMST, LEH906A-2SFP, and LEH906A-2MMSC, provide a perfect blend of durability, scalability, and management capabilities. These switches are engineered to meet the rigorous demands of industrial networking while ensuring seamless connectivity for diverse applications, making them an excellent investment for organizations looking to enhance their network infrastructure.
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