Oki es7120 Reference Manual

Contents

Network operations > 67determined by IP Filter priority. Higher priority overrides lower priority permissions. If anadministrator IP address is entered, it takes highest priority over any configured IP range.IPV6 PROTOCOL SUPPORTThe IPv6 implementation conforms to the following IETF documents:> RFC 2460: Internet Protocol, Version 6 (IPv6) Specification> RFC 2461: Neighbor Discovery for IP Version 6 (IPv6)> RFC 2462/4862: IPv6 Stateless Address Auto Configuration> RFC 1981: Path MTU Discovery for IP Version 6> RFC 2463/4443: Internet Control Message Protocol (ICMPv6)> RFC 2710/3810: Multicast Listener> Discovery Version 2 (MLDv2)IPv6 enabled devices can auto configure their IPv6 address. This happens automaticallywhenever there is an IPv6 enabled router on the subnet to which the device is connected.The printer unique ID is obtained from the Ethernet MAC address. The router may advertisemultiple network prefixes, depending on the network configuration. The Network summarypage displays all the above addresses, if they exist. If only the Local Link address (startingwith “xFE80...”) is displayed, that is an indication that the link is not connected to a router(gateway). No manual configuration of IPv6 addresses is supported, nor is there supportfor DHCPv6, and the printer does not register its IPv6 address with DNS.Upper Level Protocols such as UDP, TCP run with either IPv4 or IPv6. For instance, a printjob can be sent to the printer over IPv4 or IPv6. Similarly the EWS or SNMP can be accessedover IPv4 or IPv6. IPv6 and IPv4 coexist independent of each other. They can be Enabled/Disabled in any combination. They are both enabled by default. In cases where a particularnetwork is configured to run only one IP version, it makes sense to disable the other one(for better resource utilisation).SNMPThe printer supports SNMP v1, v2, and v3. SNMP can be used to manage any networkdevice. SNMP is a protocol that allows an SNMP manager (the controller) to control anSNMP agent (the controlee) by exchanging SNMP messages. The main purpose of an SNMPmessage is to control (set) or monitor (get) the parameters in a network device.In SNMP, a parameter is an instance of a more generic object. For example, an SNMP agentmay have several instances of an object. An SNMP manager can set or get the value foreach object instance (each parameter).In an SNMP agent, parameters are arranged in a tree. SNMP uses an Object Identifier (OID)to specify the exact parameter to set or get in the tree. An OID is a list of numbersseparated by periods. An OID is a combination of two values. The first value is the OID ofthe generic object and the second is the instance value, which specifies the particularinstance of the object.Every SNMP agent has an address book of all its objects, called the MIB or ManagementInformation Base. The MIB provides the name, OID, data type, read/write permissions, anda brief description for each object in an SNMP agent. Armed with information about anobject from the MIB, and the instance value, an SNMP manager can send an SNMP messageto set or get one of the parameters on an SNMP agent.NOTEThe address 0.0.0.0 is not allowed.