PDF user manual for CopperEdge 150

RowStatus= ActiveIpAddress = 10.1.2.3NetMask = 255.255.255.255DefaultRoute = 204.20.20.10DNSServer = 204.20.20.20Function= DHCPRelayServerIPAddr = 204.20.20.30CircuitID= CMTN-1.4.1.0The CE150 performs the following functions when it receives aDHCP request:1. The CE150 inserts the IP address of the DSL PII, overwhich the request was received, in the DHCP request.This IP address will be used by the upstream DHCPserver to send the DHCP response back to the CE150.2. For a CMCP CPE, the CE150 modifies the DHCPrequest by inserting the CircuitID from thecmDHCPTable into the Relay Agent Information andClient Identifier fields in the DHCP request message.For a non-CMCP CPE or a host on the premise LAN, theCE150 modifies the DHCP request by inserting theCircuitID only into the Relay Agent Information field.3. The CE150 sends the request upstream as a unicast IPpacket destined to the DHCP Server IP addressconfigured in the cmDHCPTable.Netmodel=IPA CPE (CMCP or non-CMCP)or premise LAN Host sends aDHCP request.The CE relays the DHCP request to theupstream DHCP server identified by theServer IP address from the DHCPTable.CPELink to DSL PII:1.4.1.0CopperEdgeDSLAMUpstreamRouterDHCPServerHostThe CE unicasts or broadcasts theDHCP response to the CPE or Host.ServerIPAddr=204.20.20.30The DHCP Server responds withan IP address and any otherconfiguration parameters, sendingthem back to the CE.The CE150 as a DHCP Relay AgentPass Through ModeIf the CE150 receives a DHCP request and there is no entry inthe cmDHCPTable for that DSL PII, the CE150 passes the requestto the upstream router or DHCP server. The DHCP requestis not modified (the Relay Agent Information and ClientIdentifier fields are not inserted in the message).&KDSWHU$GYDQFHG&RQILJXUDWLRQ