/sys$common/syshlp/NET$MGMT_HELP.HLB  —  routing  circuit  character
     ALTERNATIVE SUBNET ADDRESSES
         Support: L1,L2,IP
         Default: No Address                   Value: Set of subnet_address

         A set of alternative IP addresses and subnet masks for this interface.
         You can modify this characteristic only when the entity is disabled.

     ARP HOLDING TIME
         Support: IP
         Default: 600                          Value: 30-65535

         Number of seconds to hold on to a routing circuit ip address
         translation entity. This characteristic is supported only if the
         circuit's type characteristic is CSMA-CD.

     ARP RESPONSE WAITING TIME
         Support: IP
         Default: 3                            Value: 1-10

         Number of seconds to wait for an ARP response when an ARP request has
         been sent. This characteristic is supported only if the circuit's
         type characteristic is CSMA-CD.

     AUTHENTICATION TYPE
         Support: L1,L2,IP
         Default: None                         Value: None or Simple

         Type of authentication to be used for LAN L1 Hellos, LAN L2 Hellos,
         or PtPt Hellos on this circuit.

     DATA LINK ENTITY
         Support: All
         Default: NO Data Link name            Value: Local_entity-name

         Name of the entity within the data link module to be created when a
         port is opened for that data link type. You can modify this
         characteristic only when the entity is disabled.  This attribute is
         supported for all types of circuits; however, for X.25 circuits set
         the attribute to x25 access.

     DIRECTED BROADCAST
         Support: L1,IP
         Default: On                           Value: Off or On

         Specifies how an IP packet is to be forwarded on a broadcast link.

         OFF - Discard the packet silently.

         ON  - Broadcast the packet using data level link broa that either of
               the following conditions is true:

               o  The packet's subnet address matches the value of the subnet
                  address characteristic.

               o  The packet's subnet address matches one of the values of the
                  alternative subnet addresses characteristic.

        This characteristic is supported only if the characteristic type is
        set to CSMA-CD.

     DNA NEIGHBOR
         Support: L1,L2
         Default: True                         Value: Boolean

         If true, specifies that the neighbor is expected to be DNA
         compliant, and so proprietary mechanisms are possible. If false, no
         router-to-router Hellos or LSPs will be sent over  this circuit. This
         characteristic is supported only if the characteristic type is not
         x25 da. You can modify this  characteristic only when the entity is
         disabled.

     ENABLE PHASEIV ADDRESS
         Support: All
         Default: True                          Value: Boolean

         Specifies whether the physical LAN address is to be set to the Phase IV
         style LAN address that is, AA-00-04-00-xx-xx. The LAN address is
         set only if this attribute is true and the value of the phaseiv
         address characteristic is not 0.0.  If phaseiv address is not 0.0
         and there are multiple adaptors to the same LAN, only one circuit may
         have this attribute set to true. This characteristic is supported
         only if the characteristic type is set to CSMA-CD.

     EXPLICIT RECEIVE VERIFICATION
         Support: All
         Default: True                           Value: Boolean

         Type of password verification performed at circuit initialization. If
         true, the received verifier is checked against the value of the
         characteristic receive verifier for this circuit, if any. If false,
         the received verifier is checked against the set of verifiers specified
         in the routing permitted neighbor entities. This attribute is
         supported only if the characteristic type is set to ddcmp, hdlc,
         x25 static incoming, x25 static outgoing, and x25 permanent.

     HELLO TIMER
         Support: L1,L2
         Default: 10                             Value: 1-32767

         Interval, in seconds, between IS Hello messages.

     IDLE TIMER
         Support: All
         Default: 10                             Value: 1-32767

         Number of seconds of idle time before a call is cleared. This attribute
         is supported only if the characteristic type is x25 da.

     INACTIVE AREA ADDRESS
         Support: All
         Default: No area Address                Value: Set of area address

         Area address associated with the use of the inactive subnet of ISO
         8473.  Maximum area address that may be present is 1. This
         characterisitic is supported only if the characteristic type is set
         to csma-cd.

     INITIAL MINIMUM TIMER
         Support: All
         Default: 55                             Value: 1-65535

         Period, in seconds, for which an X.25 call remains connected after
         being established, irrespective of traffic. This should be set small
         enough that the call is cleared before the start of the next charging
         interval. This attribute is supported only if the characteristic type
         is x25 da.

     ISIS HELLO TIMER
         Support: L1,L2
         Default: 3                              Value: 1-32767

         Interval, in seconds, between LAN level 1 and level 2 router-to-router
         Hello messages. This value is also used as the interval between IS
         Hello messages when polling the ES configuration.

     L1 COST
         Support: L1,L2
         Default: 20                             Value: 1-63

         Cost of this circuit for level 1 traffic.

     L1 router priority
         Support: L1,L2
         Default: 64                             Value: 1-127

         Priority for becoming LAN level 1 designated router. This attribute is
         supported only if the circuit's characteristic type is csma-cd.

     L2 cost
         Support: L2
         Default: 20                             Value: 1-63

         Cost of this circuit for level 2 traffic.

     L2 router priority
         Support: L2
         Default: 64                             Value: 1-127

         Priority for becoming LAN level 2 designated router. This attribute is
         supported only if the circuit's characteristic  type is csma-cd.

     MANUAL DATA LINK SDU SIZE
         Support: All
         Default: 1492                           Value: 128-65535

         Preferred maximum data-link block size, in octets. You can modify this
         characteristic only when the entity is disabled. If the characteristic
         type is CSMA-CD, this characteristic is a read-only attribute whose
         value is fixed at 1492.

     MANUAL DATA LINK SDU SIZE FOR IP
         Support: IP
         Default: see below                      Value: 128-65535

         Preferred maximum DSDU size, in octets, for the transmission of IP
         packets.  The DSDU size includes the size of the packet containing the
         IP header.  On point-to-point HDLC links, the DSDU size also includes
         the 1-octet link encapsulation that is, the maximum IP packet size is
         the value of this attribute minus 1. The default value depends on the
         circuit type, as follows:

         CSMA-CD - 1500
         DDCMP   - 1500
         HDLC    - 1500
         X.25 all types - 576

        You can modify this characteristic only when the entity is disabled.

     MANUAL l2ONLY MODE
         Support: L2
         Default: False                          Value: Boolean

         If true, specifies that this circuit is to be used only for level 2
         traffic. If false, the circuit may be used for both level 1 and
         level 2 traffic. You can modify this characteristic only when the
         entity is disabled.

     MANUAL ROUTERS
         Support: End
         Default: No router IDs                   Value: Set of LAN Address

         Manually entered IDs of routers.  If this set is empty, the circuit
         will auto-configure the routers. This characteristic is supported only
         if the circuit's characteristic  type is CSMA-CD.

     MAXIMUM ARP RETRIES
         Support: IP
         Default: 3                              Value: 1-10

         Maximum number of times that an ARP request can be sent for the same
         IP address. This characteristic is supported only if the circuit's
         characteristic type is set to CSMA-CD.

     MAXIMUM CALL ATTEMPTS
         Support: All
         Default: 10                             Value: 0-255

         Maximum number of successive X.25 call failures before the circuit is
         regarded as being halted. A value of zero means that there is no limit
         to the number of retries. This attribute is supported only if the
         characteristic type  is set to x25 static outgoing. You can modify
         this characteristic only when the entity is disabled. Also, you can
         only increase the characteristic value.

     MAXIMUM SVC ADJACENCIES
         Support: All
         Default: 1                              Value: 1-65535

         Number of routing circuit adjacency entities to reserve for SVCs on
         this circuit.  This is effectively the maximum number of simultaneous
         calls possible on this circuit. This attribute is supported only if
         the characteristic type is X25 DA.

     ORIGINATING QUEUE LIMIT
         Support: L1,L2
         Default: 2                              Value: 1-50

         Maximum number of data PDUs originated by this node that can be on this
         circuit's transmit queue.  This should be set to the minimum number
         required to keep the data link from idling. You can modify this
         characteristic to a higher value when the entity is disabled; you can
         never modify it to a lower value.

     RECALL TIMER
         Support: All
         Default: 60                             Value: 0-65535

         Interval, in seconds, that must elapse between a call failure and a
         recall.  This attribute is supported only if the characteristic type
         is set to X25 static outgoing, X25 DA, HDLC, or DDCMP.

     RESERVE TIMER
         Support: All
         Default: 600                            Value: 1-65535

         Interval, in seconds, during which the SVC remains reserved for the
         previous DTE address after a call is cleared due to lack of traffic.
         This attribute is supported only if the characteristic type is
         x25 da.

     RESERVED ADJACENCY
         Support: End
         Default: False                           Value: Boolean

         If true, specifies that one SVC must be reserved for connection to a
         router. If false, no  SVC needs to be reserved for this purpose. This
         characteristic is supported only if the circuit's characteristic
         type is  x25 da.  You can modify this characteristic only when the
         entity is disabled.

     RIP GENERATED DEFAULT ROUTE
         Support: L1,L2,IP
         Default: False                           Value Boolean

         If true, this specifies that the default route is announced in RIP
         messages sent on this circuit, with the metric value  specified in the
         RIP generated default route metric characteristic. If false, the
         default route is not generated.

     RIP GENERATED DEFAULT ROUTE METRIC
         Support: L1,L2,IP
         Default: False                          Value: Boolean

         The metric to be used when announcing a generated default route through
         RIP on this circuit.

     RIP NEIGHBORS
         Support: L2,IP
         Default: No address                      Value: set of IP-addresses

         IP addresses of neighboring systems with which RIP will be exchanged
         on this circuit. If the circuit is a point-to-point circuit, this set
         must contain a single IP address if the rip state characteristic is
         to be set to  send and receive. Also, you must disable the entity
         before altering this characteristic. If the rip send type
         characteristic is set to  broadcast, only RIP messages from addresses
         specified in this set will be received; other messages will be silently
         discarded. This characteristic is supported only if the  routing
         protocols supported characteristic of the routing entity includes
         the RIP routing protocol.

     RIP POISONED REVERSE
         Support: L2,IP
         Default: True                            Value: Boolean

         Specifies whether poisoned reverse routes are to be sent in RIP
         messages on this circuit. If false, poisoned reverse routes  are not
         sent. This characteristic is supported only if the routing protocols
         supported characteristic of the routing entity includes the RIP
         routing protocol.

     RIP RECEIVE DEFAULT ROUTE
         Support: L2,IP
         Default: True                            Value: Boolean

         Specifies whether the default route is accepted from RIP messages on
         this circuit. If false, the default route from RIP messages on this
         circuit is discarded. This characteristic is supported only if the
         routing protocols supported characteristic of the routing entity
         includes the RIP routing protocol.

     RIP SEND TYPE
         Support: L2,IP
         Default: Broadcast                  Value: Broadcast or point-to-point

         Specifies how RIP messages are sent on this circuit.

         BROADCAST -      RIP messages are sent by means of data link broadcast.

         POINT-TO-POINT - RIP messages are sent directly to each IP address
                          specified in the rip neighbors characteristic.

        This characteristic is supported only if the routing protocols
        supported characteristic of the routing entity includes the RIP
        routing protocol and if the circuit's type characteristic is csma-cd.

     RIP STATE
         Support: L2,IP
         Default: Off                           Value: see below

         Specifies how RIP messages are treated on this circuit.

         OFF -              RIP messages cannot be sent or received on this
                            circuit.

         RECEIVE -          RIP messages can be received but not sent on this
                            circuit.

         SEND AND RECEIVE - RIP messages can be sent and received on this
                            circuit.

        This characteristic is supported only if the routing protocols
        supported characteristic of the routing entity includes the RIP
        routing protocol.

     SUBNET ADDRESS
         Support: IP
         Default: 0.0.0.0                     Value: Subnet Address

         IP address and subnet mask of this interface.  You can modify this
         characteristic only when the entity is disabled.

     TEMPLATE
         Support: All
         Default: No template name             Value: Template-id

         Name of the template to be used when a port is opened for this
         data-link type.  If no template name is specified, no template is used.
         You can modify this characteristic only when the entity is disabled.

     TRANSMIT VERIFIER
         Support: All
         Default: No verifier                  Value: Hex-string, length 0-38

         Value to be transmitted for verifying the identity of this node. If
         no verifier is specified, no verifier is transmitted. This
         characteristic is supported only if the characteristic type is
         either ddcmp, hdlc,  x25 static outgoing, x25 static incoming, or
         x25 permanent. You cannot display this characteristic.

     TYPE
         Support: All
         Default: All

         Type of circuit. You cannot modify this characteristic. This
         characteristic is set by means of an argument to the create command.

         CSMA-CD -             The circuit is a broadcast circuit.

         DDCMP -               The circuit is a DDCMP circuit.

         HDLC -                The circuit is an HDLC circuit.

         X25 DA -              The circuit is a dynamically allocated X.25
                               circuit.

         X25 PERMANENT -       X.25 permanent virtual circuit.

         X25 STATIC INCOMING - Static incoming X.25 circuit.

         X25 STATIC OUTGOING - Static outgoing X.25 circuit.

     X.25 FILTERS
         Default: seee below                       Value: set of simple names

         Specifies the set of X.25 filters to be used when a port is opened to
         the X.25 module.  Typically, there will be two sets: one to specify the
         selection on the Call User Data field for DECnet-Plus, and the other to
         specify the selection on the subaddress for Phase IV. This attribute is
         valid only if the characteristic type is x25 static incoming or x25
         da.
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