Zyxel VES-1624FT-55A [181/312] 2684 routed mode

Zyxel VES-1624FT-55A [181/312] 2684 routed mode
VES-1624FT-55A User’s Guide
181
CHAPTER 31
2684 Routed Mode
This chapter shows you how to set up 2684 routed mode service.
31.1 2684 Routed Mode
Use the 2684 (formerly 1483) routed mode to have the IP DSLAM add MAC address headers
to 2684 routed mode traffic from a PVC that connects to a subscriber device that uses 2684
routed mode. You also specify the gateway to which the IP DSLAM sends the traffic and the
VLAN ID tag to add. See RFC-2684 for details on routed mode traffic carried over AAL type
5 over ATM.
Use the 2684 Routed PVC Screen to configure PVCs for 2684 routed mode traffic.
Use the 2684 Routed Domain Screen to configure domains for 2684 routed mode traffic.
The domain is the range of IP addresses behind the subscribers device (the CPE or
Customer Premises Equipment). This includes the CPE device’s LAN IP addresses and
the IP addresses of the LAN computers.
Use the RPVC Arp Proxy Screen to view the Address Resolution Protocol table of IP
addresses of CPE devices using 2684 routed mode and configure how long the device is to
store them.
Use the 2684 Routed Gateway Screen to configure gateway settings.
For upstream traffic: Since the subscriber's device will not send out a MAC address, after
the IP DSLAM reassembles the Ethernet packets from the AAL5 ATM cells, the IP
DSLAM will append the routed mode gateway's MAC address and the IP DSLAM's MAC
address as the destination/source MAC address.
For downstream traffic: When the IP DSLAM sees the destination IP address is specified
in the RPVC (or RPVC domain), the IP DSLAM will strip out the MAC header and send
them to the corresponding RPVC.
31.1.1 2684 Routed Mode Example
The following figure shows an example 2684 routed mode set up. The gateway server uses IP
address 192.168.10.102 and is in VLAN 1. The IP DSLAM uses IP address 192.168.10.101.
The subscribers device (the CPE) is connected to DSL port 1 on the IP DSLAM and the 2684
routed mode traffic is to use the PVC identified by VPI 8 and VCI 35. The CPE device’s WAN
IP address is 192.168.10.200. The routed domain is the LAN IP addresses behind the CPE
device. The CPE devices LAN IP address is 10.10.10.10 and the LAN computers IP address
is 10.10.10.1. This includes the CPE device’s LAN IP addresses and the IP addresses of the
LAN computers.

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