Atlantis Land A02-RA2 ME01 ユーザーズマニュアル

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5. PPP Configuration: The current release supports multiple PPP sessions per PVC. The PPP 
configuration in the WAN configuration page is for the first PPP session for each PVC. The 
predefined PPP Account Name (Account ID) is “Simple PPP Account 0” for PVC0 and predefined 
PPP Connection Name is “Simple PPP Session 0” for PVC0. For the other PVC X, the predefined 
account name and connection name will be Simple PPP Account X and Simple PPP Session X. X is 
the PVC number from 1 to 7. It can support up to total of 16 PPP sessions, and each PVC can support 
up to 8 PPP sessions. The multiple PPP sessions may be configured with any combination over 8 
PVCs.  
For the multiple PPP sessions, please go to PPP Configuration page 
Service Name: The service name of PPP is required by some ISPs. If the ISP does not provide the 
Service Name, please leave it blank. 
Disconnect Timeout: The Disconnect Timeout allows users to set the specific period of time to 
disconnect from the ISP.  The default is 0, which means never disconnect from the ISP.  
MRU: Maximum Receive Unit indicates the peer of PPP connection the maximum size of the PPP 
information field this device can be received. The default value is 1492 and is used in the beginning of 
the PPP negotiation. In the normal negotiation, the peer will accept this MRU and will not send packet 
with information field larger than this value. 
MTU: Maximum Transmission Unit indicates the network stack of any packet is larger than this value 
will be fragmented before the transmission. During the PPP negotiation, the peer of the PPP 
connection will indicates its MRU and will be accepted. The actual MTU of the PPP connection will 
be set to the smaller one of MTU and the peer’s MRU. The default is value 1492. 
MSS: Maximum Segment Size is the largest size of data that TCP will send in a single IP packet. 
When a connection is established between a LAN client and a host in the WAN side, the LAN client 
and the WAN host will indicate their MSS during the TCP connection handshake. The default value is 
1432. 
Automatic Reconnect: When it is checked, it will maintain the PPP connection all the time. If the ISP 
shut down the PPP connection, it will automatically reconnect PPP session. 
Authentication: When AUTO option is chosen, the PAP mode will run first then CHAP. 

 

Q1: If the PPP is disconnected after the Disconnect Timeout and how can I reconnect it? 

A: You have to go to the PPP Status under Admin Privileged column, choose the correct PVC and 
Connect option, and then click Execute to restart a new PPP secession.

 

Host name: Required by some ISPs.  If the ISP does not provide the Host name, please leave it blank.

 

6. IGMP:IGMP relay/proxy specification and environment: 

 

Support IGMP proxy/relay function for ADSL modem, based on the following requirement and 

case. 

 

On CO side, there must be at least one IGMP querier (router) present. IGMP querier will send 

IGMP query packet. The ADSL modem is responsible to relay these IGMP query to Ethernet. 

 

End-user multicast application device send IGMP report while receiving IGMP query or being 

activated by user, the ADSL modem should be responsible to proxy (that is, change source IP to