Chapter 26 IP Source Guard

The following table describes the labels in this screen.

Table 83 DHCP Snooping

LABEL

DESCRIPTION

Database Status

This section displays the current settings for the DHCP snooping

 

database. You can configure them in the DHCP Snooping

 

Configure screen. See Section 26.5 on page 280.

 

 

Agent URL

This field displays the location of the DHCP snooping database.

 

 

Write delay timer

This field displays how long (in seconds) the Switch tries to

 

complete a specific update in the DHCP snooping database before

 

it gives up.

 

 

Abort timer

This field displays how long (in seconds) the Switch waits to

 

update the DHCP snooping database after the current bindings

 

change.

 

 

 

This section displays information about the current update and

 

the next update of the DHCP snooping database.

 

 

Agent running

This field displays the status of the current update or access of

 

the DHCP snooping database.

 

none: The Switch is not accessing the DHCP snooping database.

 

read: The Switch is loading dynamic bindings from the DHCP

 

snooping database.

 

write: The Switch is updating the DHCP snooping database.

 

 

Delay timer expiry

This field displays how much longer (in seconds) the Switch tries

 

to complete the current update before it gives up. It displays Not

 

Running if the Switch is not updating the DHCP snooping

 

database right now.

 

 

Abort timer expiry

This field displays when (in seconds) the Switch is going to

 

update the DHCP snooping database again. It displays Not

 

Running if the current bindings have not changed since the last

 

update.

 

 

 

This section displays information about the last time the Switch

 

updated the DHCP snooping database.

 

 

Last succeeded

This field displays the last time the Switch updated the DHCP

time

snooping database successfully.

 

 

Last failed time

This field displays the last time the Switch updated the DHCP

 

snooping database unsuccessfully.

 

 

Last failed reason

This field displays the reason the Switch updated the DHCP

 

snooping database unsuccessfully.

 

 

 

This section displays historical information about the number of

 

times the Switch successfully or unsuccessfully read or updated

 

the DHCP snooping database.

 

 

Total attempts

This field displays the number of times the Switch has tried to

 

access the DHCP snooping database for any reason.

 

 

Startup failures

This field displays the number of times the Switch could not

 

create or read the DHCP snooping database when the Switch

 

started up or a new URL is configured for the DHCP snooping

 

database.

 

 

278

MGS3700-12C User’s Guide

Page 277 Page 279
Page 278
Image 278
ZyXEL Communications metrogigabit switch manual 278, Configure screen. See .5 on
Page 277 Page 279

metrogigabit switch specifications

ZyXEL Communications has long been a prominent player in the networking hardware industry, providing innovative solutions that cater to both business and consumer markets. Among their notable offerings is the Metrogigabit switch, a device designed to meet the high demands of modern networks.

The ZyXEL Metrogigabit switch is primarily aimed at service providers and large enterprises, recognizing the need for seamless connectivity in an increasingly digital world. This switch is engineered for scalability, enabling users to effortlessly expand their network as their operational needs grow. With support for high bandwidth, it is particularly suited for environments requiring extensive data traffic management, such as data centers and campus networks.

One of the standout features of the Metrogigabit switch is its high-density gigabit Ethernet ports, which provide a backbone for reliable data transmission. The switch typically supports multiple 10G SFP+ uplinks, ensuring fast and efficient connections to upstream devices. This capability allows users to configure their networks to handle large volumes of data quickly and without interruption.

In terms of technology, the Metrogigabit switch leverages advanced Layer 2 and Layer 3 functionalities. This includes features such as VLAN support for traffic segmentation, Quality of Service (QoS) for prioritizing mission-critical applications, and robust multicast management. These capabilities contribute to enhanced network efficiency and performance.

Another characteristic that sets the ZyXEL Metrogigabit switch apart is its built-in security features. The device is designed to protect network integrity through mechanisms like port security, access control lists, and advanced authentication protocols. This focus on security helps prepare businesses to counteract potential threats in a landscape where cyber attacks are increasingly sophisticated.

Moreover, the switch is equipped with a user-friendly management interface, which simplifies the process of monitoring and configuring network settings. This is complemented by support for SNMP and RMON, allowing network administrators to leverage tools for effective performance monitoring.

In summary, the ZyXEL Metrogigabit switch is an essential tool for organizations seeking robust performance, reliability, and security in their networking infrastructure. With its high-density ports, flexible configuration options, and comprehensive management features, it provides a strong foundation for building efficient and scalable networks. Whether for service providers or enterprises, this switch stands out as a reliable choice in the fast-evolving technological landscape.
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