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PLANET Technology Corp. GRT-101/401/402 User’s Manual
LLC header of the packet. The VC based multiplexing method carries each
protocol on a separate ATM virtual circuit. This method is sometimes used in
private networks, in which PVC creation is very economical.
Note: Each VC is expressed as WAN x, where x is a number between 1 and 8. GRT series comes pre-configured with
one ATM VC (WAN 1 with VPI/VCI = 0/32) already established. The WAN 1 port is ready to send and receive network
traffic via IPoA protocol with LLC encapsulation. You may need to modify the pre-configured ATM VC when
communicating across your local ISP network.
For bridging mode operation, you should select Ethernet over ATM (RFC 1483
bridged Ethernet) as the ATM protocol. For routing mode operation, GRT
series supports Ethernet over ATM (RFC 1483 bridged Ethernet), IP over ATM
(RFC 1483 routed IP/RFC 1577), PPP over ATM (RFC 2364), and PPP over
Ethernet (RFC 2516). The following example enables the ATM VC WAN 3 with
protocol of Ethernet over ATM:
admin# setup wan 3 protocol Ethernet
where the selectable parameters corresponding to the above ATM protocols
are “Ethernet”, “IPoA”, “PPPoA”, and “PPPoE”. To disable the pre-configured
ATM VC WAN 1, enter:
admin# setup wan 1 protocol Disable
The valid ranges for the VPI is from 0 to 255. For the VCI, it is between 0 and
65535.
The following example set the VPI/VCI = 0/135 for ATM VC WAN 3
admin# setup wan 3 vpi_vci 0 135
To change the encapsulation from default LLC to VC-Mux for ATM VC WAN 3
admin# setup wan 3 encap VC-Mux
To review the new configuration you have changed for WAN 3, type:
admin# setup wan 3 list
WAN Interface Parameters
Int. Link IP Address/ Netmask VPI/ VCI Encap. QoS PCR
---- -------- ----------------------------- --------- ------ --- ----
WAN 1 Disable
WAN 2 Disable
WAN 3 Ethernet 192.168.3.1/ 255.255.255.0 0/ 135 VC-Mux UBR 2400
WAN 4 Disable
WAN 5 Disable
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