ZyXEL Communications Network Card gigabit ethernet line card version 4.02 Manual de usuario descargar pdf (Pagina 12)

Chapter 1 Introducing the GLC1320G-55

GLC1320G-55 User’s Guide

Anti-IP Address Spoofing

With DHCP snooping, the GLC1320G-55 records which IP addresses are assigned on each port. The

GLC1320G-55 drops packets from a device using a different IP address.

Anti-MAC Address Spoofing

The GLC1320G-55 checks to make sure the MAC addresses of the devices connected to the

subscriber ports are not the same as MAC addresses of devices connected to the Ethernet network.

This protects the network from disruptions of service caused by subscriber devices spoofing the

MAC address of ISP servers.

PPPoE Intermediate Agent Information

Similar to DHCP relay option82, you can set the system to insert line information into client PPPoE

Active Discovery Initialization (PADI), PPPoE Active Discovery Request (PADR), and upstream PPPoE

Active Discovery Terminate (PADT) packets. This allows a PPPoE termination server to identify and

authenticate a PPPoE client.

Transparent LAN Service (TLS)

Use TLS (also known as VLAN stacking) to add an outer VLAN tag to the inner IEEE 802.1Q tagged

frames that enter the network. By tagging the tagged frames (“double-tagged” frames), the service

provider can manage up to 4,094 VLAN groups with each group containing up to 4,094 customer

VLANs. This allows a service provider to provide different services based on specific VLANs, for

many different customers.

Classifier and Policy

You can create an ACL profile and map it to individual ports to define actions to be performed on

traffic that matches the ACL profile. The ACL profile specifies criteria such as the IP address, port

number, or protocol type, and so on.

Console Port

Use the console port for debugging and troubleshooting.

1.3 Front Panel

The figure below shows the front panel of the GLC1320G-55.

Figure 2 Front Panel

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ZyXEL Communications Network Card gigabit ethernet line card version 4.02 Manual de usuario Pagina 12