ZyXEL Communications IES-1248-51 Guia do Utilizador descarregar pdf (Página 531)

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Chapter 66 Virtual Channel Commands

IES-1248-51V User’s Guide

531

66.7 Transparent LAN Service (TLS)

Transparent LAN Services (also known as VLAN stacking or Q-in-Q) allows a

service provider to distinguish multiple customers VLANs, even those with the

same (customer-assigned) VLAN ID, within its network.

Use TLS 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.

A service provider’s customers may require a range of VLANs to handle multiple

applications. A service provider’s customers can assign their own inner VLAN tags

to traffic. The service provider can assign an outer VLAN tag for each customer.

Therefore, there is no VLAN tag overlap among customers, so traffic from different

customers is kept separate.

pppoe padi =

The number of padi PDUs sent by the IES-1248-51V to

the BRAS.

pppoe pado =

The number of pado PDUs sent by the BRAS to the IES-

1248-51V.

pppoe padr =

The number of padr PDUs sent by the IES-1248-51V to

the BRAS.

pppoe pads =

The number of pads PDUs sent by the BRAS to the IES-

1248-51V.

pppoe padt =

The number of padt PDUs sent and received by the IES-

1248-51V.

pppoe srvcname

error

The number of service name errors; for example, the

IES-1248-51V’s specified service is different than the

BRAS’s setting.

pppoe ac system

error

The number of times the access concentrator

experienced an error while performing the Host

request; for example, when resources are exhausted in

the access concentrator. This value does not include the

number of times the IES-1248-51V checks the AC name

field in the BRAS's reply PDU and finds a mismatch,

however.

pppoe generic

error

The number of other types of errors that occur in the

PPPoE session between the IES-1248-51V and the

BRAS.

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