APPN Add Port

This option allows you to add an APPN port.

Enter the following information:

  1. Link type

    This parameter specifies the type of link associated with this port.

    Valid Values:

    Default Value: None

  2. Interface number

    This parameter defines the physical interface number of the hardware interface to which this device is attached.

    Valid Values: 0 to 253

    Default Value: 0

  3. Port name

    This parameter specifies the name representing this port.

    Valid Values: A string of 1 to 8 characters, where the first character is alphabetic and the 2nd through 8th characters are alphanumeric.

    Default Value: A unique unqualified name that is automatically generated.

    The name will consist of :

    followed by the interface number.

    You can change the port name to a name of your choice.

  4. Enable APPN routing on this port

    This parameter specifies whether APPN routing is to be enabled on this port.

    Valid Values: Yes, No

    Default Value: Yes

  5. Service any node

    This parameter specifies how the router network node responds to a request from another node to establish a connection over this port. When this parameter is enabled, the network node accepts any request it receives from another node to establish a connection. When this parameter is disabled, the network node accepts connection requests only from nodes that you explicitly define (via link station definitions). This option provides an added level of security for the router network node.

    When you disable this parameter, a connection request from an adjacent node will be accepted only if the node's Fully qualified CP name parameter has been configured for a link station defined on this port.

    When this parameter is enabled (the default), you may still want this network node to be able to initiate connections with specific nodes over this port.

    Valid Values: Yes No

    Default Value: Yes

  6. High-performance routing (HPR) supported

    This parameter indicates whether link stations on this port will support HPR. This value may be overridden on the link station definition.

    Valid Values: Yes, No

    Default Value: No

Answer the following ATM questions:

  1. Local ATM Address This parameter specifies the 7-byte string that comprises the user part of the local ATM address. The user part is the 6-byte ESI and the 1-byte selector field. This user-part must be unique with respect to the network part of the ATM address, which is retrieved from the ATM adapter. The selector must be unique for each protocol type.

    Valid Values: Any 14-hexadecimal character string

    Default Value: None

  2. Enable incoming calls

    This parameter determines whether calls will be rejected at the ATM level.

    Valid Values: Yes or No

    Default Value: Yes

  3. ATM Network Type

    This parameter specifies the network type used for default values for connection networks and other link stations defined on this port.

    Valid Values: Campus or Widearea

    Default Value: Campus

  4. Shareable connection network traffic

    This parameter specifies whether connection network traffic can be routed on the ATM VC set up for a link station on this port.

    Valid Values: Yes, No

    Default Value: No

  5. Shareable other protocol traffic

    This parameter specifies whether other higher level protocol traffic can be routed on the ATM VC set up for a link station on this port.

    Valid Values: Yes, No

    Default Value: No

  6. Broadband Bearer Class

    This parameter specifies the bearer class requested from the ATM network. The classes are defined:

    Valid Values: Class_A, Class_C, Class_X

    Default Value: Class_X

  7. Best Effort Indicator

    This parameter indicates if a throughput guarantee is required on this SVC. If the value of this parameter is yes, then VCCs associated with this interface will be allocated based upon the available bandwidth.

    Valid Values: Yes, No

    Default Value: No

Enter the following forward traffic parameters:

  1. Forward Traffic Peak Cell Rate

    This parameter indicates an upper bound on the cell transmission rate.

    Valid Values: 1 - 85% of line speed

    Default Value: Port's Default Effective Capacity/48

  2. Forward Traffic Sustained Cell Rate

    This parameter indicates an upper bound on the average cell transmission rate. You cannot specify this parameter if you are using a Best Effort connection.

    Valid Values: 1 - 85% of line speed

    Default Value: Port's Default Effective Capacity/48

  3. Forward Traffic Tagging

    This parameter indicates that cells that are nonconforming to cell loss priority 0 traffic specification but are conforming to cell loss priority 1 traffic specification are marked and allowed into the ATM network. You cannot specify this parameter if you are using a Best Effort connection.

    Valid Values: Yes, No

    Default Value: Yes

  4. Forward QOS

    This parameter indicates which class of service is provided to an ATM virtual connection. This parameter is always CLASS_0 for a Best Effort connection.

    Valid Values: CLASS_0, CLASS_1, CLASS_2, CLASS_3, CLASS_4, where

    Default Value: CLASS_0

Enter the following backward traffic parameters:

  1. Backward Traffic Peak Cell Rate

    This parameter indicates an upper bound on the cell transmission rate.

    Valid Values: 1 - 85% of line speed

    Default Value: Port's Default Effective Capacity/48

  2. Backward Traffic Sustained Cell Rate

    This parameter indicates an upper bound on the average cell transmission rate. You cannot specify this parameter for a Best Effort connection.

    Valid Values: 1 - 85% of line speed

    Default Value: Port's Default Effective Capacity/48

  3. Backward Traffic Tagging

    This parameter indicates that cells that are nonconforming to cell loss priority 0 traffic specification but are conforming to cell loss priority 1 traffic specification are marked and allowed into the ATM network. You cannot specify this parameter for a Best Effort connection.

    Valid Values: Yes, No

    Default Value: Yes, unless Best Effort connection

  4. Backward QOS

    This parameter indicates which class of service is provided to an ATM virtual connection. You cannot specify this parameter for a Best Effort connection.

    Valid Values:

    CLASS_0, CLASS_1, CLASS_2, CLASS_3, CLASS_4, where

    Default Value: CLASS_0

  5. LDLC retry count

    This parameter is used in conjunction with the LDLC timer period to provide reliable delivery of XIDs. The retry count is initialized when a command or request is first transmitted over the link. If the LDLC timer period expires before a response is received, the command or request is retransmitted, the retry count is decremented, and the LDLC timer period is restarted. If the timer expires with the retry count at 0, the link is assumed to be inoperative.

    Valid Values: 1 - 255

    Default Value: 3

  6. LDLC Timer Period

    This parameter specifies the timer period used with the LDLC retry count.

    Valid Values: 1 - 255 seconds

    Default Value: 1 second

Enter the following port definition parameters:

  1. Maximum BTU size

    This parameter specifies the number of bytes in the largest basic transmission unit (BTU) that can be processed (transmitted or received) by a link station defined on this port.

    If a negotiable BIND with an RU size greater than 2048 is received, the device will normally choose a maximum RU size of 2048. If a non-negotiable BIND with an RU size greater than 2048 is received, the device will support the larger RU size up to a maximum size of 4096.

    Valid Values:

    Default Value:

  2. Maximum number of link stations

    This parameter specifies the maximum number of link stations that will be allowed to use this port. This parameter allows the resources for the APPN node and this port to be constrained.

    Valid Values: 1 to 976

    Default Value: 512

  3. Percent of link stations reserved for incoming calls

    This parameter specifies the percentage of the maximum number of link stations that will be reserved for incoming calls. Link stations that are not reserved for incoming or outgoing calls are available for either purpose on a demand basis.

    Valid Values: 0 to 100

    The sum of the percent of link stations reserved for incoming calls and the percent of link stations reserved for outgoing calls cannot exceed 100%.

    Default Value: 0

  4. Percent of link stations reserved for outgoing calls

    This parameter specifies the percentage of the maximum number of link stations that will be reserved for outgoing calls. Fractions resulting from the computation are truncated. Link stations that are not reserved for incoming or outgoing calls are available for either purpose on a demand basis.

    Valid Values: 0 to 100%

    The sum of the percent of link stations reserved for incoming calls and the percent of link stations reserved for outgoing calls cannot exceed 100%.

    Default Value: 0

  5. Local APPN SAP address

    This parameter specifies the local SAP address to be used for communicating with APPN link stations defined on this port.

    Valid Values: >Multiples of four in the hexadecimal range X'04' to X'EC'

    Default Value:

    X'04'

  6. Local HPR SAP address

    This parameter indicates the local service access point to be used for communicating with HPR link stations defined on this port.

    Valid Values: Multiples of four in the hexadecimal range X'04' to X'EC'

    Default Value:

    X'C8'

  7. Branch uplink

    This parameter indicates whether the default for link stations using this port will be uplink or downlink. If yes is specified, link stations using this port will default Branch uplink to yes.

    Valid Values: Yes or No

    Default Value: No

Enter the following port default TG Characteristics:

  1. Cost per connect time

    This parameter specifies the cost per connect time TG characteristic for all link stations on this port.

    The cost per connect time TG characteristic expresses the relative cost of maintaining a connection over the associated TG. The units are user-defined and are typically based on the applicable tariffs of the transmission facility being used. The assigned values should reflect the actual expense of maintaining a connection over the TG relative to all other TGs in the network. A value of zero means that connections over the TG may be made at no additional cost (as in the case of many nonswitched facilities). Higher values represent higher costs.

    Valid Values:

    0 to 255

    Default Value:

    For ATM SVCs:

    For ATM PVCs:

    For all other: 0

  2. Cost per byte

    This parameter specifies the cost per byte TG characteristic for all link stations defined on this port.

    The cost per byte TG characteristic expresses the relative cost of transmitting a byte over the associated TG. The units are user-defined and the assigned value should reflect the actual expenses incurred for transmitting over the TG relative to all other TGs in the network. A value of zero means that bytes may be transmitted over the TG at no additional cost. Higher values represent higher costs.

    Valid Values: 0 to 255

    Default Value

    For ATM SVCs:

    For ATM PVCs:

    For all other: Nonsecure

  3. Security

    This parameter specifies the security TG characteristic for all link stations defined on this port.

    The security TG characteristic indicates the level of security protection associated with the TG. If security attributes other than the architecturally-defined ones are needed, one of the user-defined TG characteristics may be used to specify additional values.

    Valid Values:

    Default Value:

    For ATM SVCs:

    For ATM PVCs:

    For all other: Nonsecure

  4. Propagation delay

    This parameter specifies the propagation delay TG characteristic for all link stations defined on this port.

    The propagation delay TG characteristic specifies the approximate range for the length of time that it takes for a signal to propagate from one end of the TG to the other.

    Valid Values:

    Default Value:

    For LAN:

    For ATM SVCs:

    For ATM PVCs:

  5. Effective capacity

    This parameter specifies the effective capacity TG characteristic for all associated connections (TGs) on this port.

    This parameter specifies the maximum bit transmission rate for both physical links and logical links. Note that the effective capacity for a logical link may be less than the physical link speed. The rate is represented in COS files as a floating-point number encoded in a single byte with units of 300 bps.

    The effective capacity is encoded as a single-byte representation. The values '00' and ' FF' are special cases used to denote minimum and maximum capacities. The range of the encoding is very large; however, only 256 values in the range may be specified.

    This parameter provides the default value for the Effective capacity parameter on the Modify TG Characteristics Command Line option. The Modify TG Characteristics Command Line option enables you to override the default values assigned to TG characteristics on the individual link stations you define.

    Valid Values: 2 hexadecimal digits in the range '00' to 'FF'

    Default Value:

    token-ring ports: dependent upon minimum data rate specified.

    Ethernet/802.3 ports:

  6. First user-defined TG characteristic

    This parameter specifies the first user-defined TG characteristic for all link stations defined on this port.

    The first user-defined TG characteristic specifies the first of three additional characteristics that users can define to describe the TGs in a network. The default value of 128 allows a subset of TGs to be defined as more or less desirable than the rest without defining values for all TGs.

    Valid Values: 0 to 255

    Default Value: 128

  7. Second user-defined TG characteristic

    This parameter specifies the second user-defined TG characteristic for all link stations defined on this port.

    The second user-defined TG characteristic specifies the second of three additional characteristics that users can define to describe the TGs in a network.

    Valid Values: 0 to 255

    Default Value: 128

  8. Third user-defined TG characteristic

    This parameter specifies the third user-defined TG characteristic for all link stations defined on this port.

    The third user-defined TG characteristic specifies the third of three additional characteristics that users can define to describe the TGs in a network.

    Valid Values: 0 to 255

    Default Value: 128

Enter the following port default LLC Characteristics:

  1. Remote APPN SAP

    This parameter specifies the SAP associated with an adjacent node's APPN link station.

    Valid Values: Multiples of four in the hexadecimal range of '04' to X'EC'

    Default Value: X'04'

  2. Maximum number of outstanding I-format LPDUs (TW)

    This parameter specifies the LLC maximum number of outstanding I-format LPDUs (TW) for all link stations on this port.

    The maximum number of outstanding I-format LPDUs defines the transmit Command Line option (TW) which is the maximum number of sequentially numbered I-format LPDUs that the link station may have unacknowledged at any given time.

    Valid Values: 1 to 127

    Default Value: 26

  3. Receive window size

    This parameter specifies the LLC receive Command Line option size (RW) for all link stations on this port.

    The RW parameter specifies the maximum number of unacknowledged sequentially numbered I-format LPDUs that the link station can receive from the remote link station. RW is advertised in SNA XID frames and IEEE 802.2 XID frames. The XID receiver should set its effective TW to a value less than or equal to the value of the received RW to avoid overruns.

    Valid Values: 1 to 127

    Default Value: 26

  4. Inactivity timer (Ti)

    This parameter specifies the LLC inactivity timer (Ti) for all link stations on this port.

    An LLC link station uses Ti to detect an inoperative condition in either the remote link station or in the transmission media. If an LPDU is not received in the time interval specified by Ti, an S-format command LPDU with the poll bit set is transmitted to solicit remote link station status. Recovery is then based on the reply timer (T1).

    Valid Values: 1 to 254 seconds

    Default Value: 30 seconds

  5. Reply timer (T1)

    This parameter specifies the LLC reply timer (T1) for all link stations on this port.

    An LLC link station uses T1 to detect a failure to receive a required acknowledgement or response from the remote link station. When T1 expires, the link station sends an S-format command link layer protocol data unit (LPDU) with the poll bit set to solicit remote link station status or any U-format command LPDUs that have not been responded to. The duration of T1 should take into account any delays introduced by underlying layers.

    Valid Values: 1 to 254 half-seconds

    Default Value: 2 half-seconds

  6. Maximum number of retransmissions (N2)

    This parameter specifies the maximum number of retransmissions (N2) for all link stations on this port.

    The N2 parameter specifies the maximum number of times an LPDU will be retransmitted following expiration of the reply timer (T1).

    Valid Values: 1 to 254

    Default Value: 8

  7. Receive acknowledgement timer (T2)

    This parameter specifies the LLC receiver acknowledgement timer (T2) for all link stations on this port.

    The T2 parameter may be used with the N3 counter to reduce acknowledgement traffic. A link station uses T2 to delay the sending of an acknowledgement for a received I-format LPDU. T2 is started when an I-format LPDU is received, and reset when an acknowledgement is sent in an I-format or S-format LPDU. If T2 expires, the link station must send an acknowledgement as soon as possible. The value of T2 must be less than that of T1, to ensure that the remote link station will receive the delayed acknowledgement before its T1 expires.

    Valid Values: 1 to 254 half-seconds

    Default Value: 1 half-second

  8. Acknowledgements needed to increment working window

    When the working window (Ww) is not equal to the Maximum Transmit Window Size (Tw), this parameter is the number of tranmitted I-format LPDUs that must be acknowledged before the working window can be incremented (by 1). When congestion is detected, by the loss of I-format LPDUs, Ww is set to 1.

    Valid Values: 0 to 127

    Default Value: 1

Enter the following HPR Override Defaults.

  1. Inactivity timer override for HPR (HPR Ti)

    This parameter specifies the LLC inactivity timer (HPR Ti) that is to be used for all link stations on this port supporting HPR when the HPR supported parameter is enabled on this port. This default overrides the value of the default LLC inactivity timer (Ti) parameter specified on the default LLC characteristics parameter.

    Valid Values: 1 to 254 seconds

    Default Value: 2 seconds

  2. Reply timer override for HPR (HPR T1)

    This parameter specifies the LLC reply timer (HPR T1) that is to be used for all link stations on this port supporting HPR when the HPR supported parameter is enabled on this port. This default overrides the value of the default LLC reply timer (T1) parameter specified on the default LLC characteristics parameter.

    Valid Values: 1 to 254 half-seconds

    Default Value: 2 half-seconds

  3. Maximum number of retransmissions for HPR (HPR N2)

    This parameter specifies the LLC maximum number of retransmissions (HPR N2) that is to be used for all link stations on this port supporting HPR when the HPR supported parameter is enabled on this port. This default overrides the value of the default LLC maximum number of retransmissions (N2) parameter specified on the default LLC Characteristics parameter.

    Valid Values: 1 to 254

    Default Value: 3

Select the Submit button.