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The two tables in this appendix contain information about X.25 diagnostic codes including:
Table A-1 describes the differences between Cisco's implementation of certain X.25 network-generated, "international problem" diagnostic fields and the definitions provided in Annex E of CCITT Recommendation X.25. The complete diagnostics listing is provided in Annex E's Table E-1/X.25.This translation table lists the decimal value of the diagnostic number, the CCITT description, and the Cisco definition.
| Decimal Value | Annex E, Rec. X.25 Diagnostic Description | Cisco Proprietary Definition of Diagnostic Codes |
|---|---|---|
| 112 | International problem | Not used. |
| 113 | Remote network problem | Not used. |
| 114 | International protocol problem | Not used. |
| 115 | International link out of order | Indicates one of the following failures: failed when initializing a switched PVC; in TCP tunneling, failed when initiating or resetting a PVC; or, failed when PAD PVC circuit is being initiated or reset. |
| 116 | International link busy | Not used. |
| 117 | Transit network facility problem | Not used. |
| 118 | Remote network facility problem | Not used. |
| 119 | International routing problem | Indicates the following failure: in TCP tunneling of X.25 when session is closed by network. |
| 120 | Temporary routing problem | Indicates the following failure: when tunneling X.25 through TCP/IP and the remote network is identified as unreachable. |
| 121 | Unknown called DNIC | Not used. |
| 122 | Maintenance action (may apply to maintenance action within a national network | For CMNS, indicates the following: router fails to route the call due to setup or unreachability of destination; when VC is cleared using the clear x25-vc EXEC command. |
The following table is summarized from the 1988 CCITT Recommendation X.25
Tables 20/X.25, 21/X.25, 22/X.25, 23/X.25, and E-1/X.25. The International Telecommunication Union holds the copyright to the CCITT Recommendations as published in the CCITT Blue Book Volume VIII--Fascicle VIII.2, "Data Communication Networks: Services and Facilities, Interfaces. Recommendations X.1-X.32," Geneva 1989, ISBN 92-61-03671-6.
This table allows users to easily interpret the cause and diagnostic fields reported in various packets. Cisco equipment does not generate all of the codes listed, nor is the protocol affected by the cause or diagnostic code reported in a packet. Note that Cisco equipment reports cause and diagnostic fields in their decimal representations.
| Cause Description | Decimal Value | Hex Value | |
|---|---|---|---|
1. Cause field codes for Restart packets | |||
| Local procedure error | 1 | 01 | |
| Network congestion | 3 | 03 | |
| Network operational | 7 | 07 | |
| Registration/cancellation confirmed | 127 | 7F | |
2. Cause field codes for Clear packets | |||
| DTE originated | 0,
128-255 | 00,
80-FF | |
| Number busy | 1 | 01 | |
| Invalid facility request | 3 | 03 | |
| Network congestion | 5 | 05 | |
| Out of order | 9 | 09 | |
| Access barred | 11 | 08 | |
| Not obtainable | 13 | 1D | |
| Remote procedure error | 17 | 11 | |
| Local procedure error | 19 | 13 | |
| RPOA out of order | 21 | 15 | |
| Reverse charging acceptance not subscribed | 25 | 19 | |
| Incompatible destination | 33 | 21 | |
| Fast select acceptance not subscribed | 41 | 29 | |
| Ship absent | 57 | 39 | |
3. Cause field codes for reset packets | |||
| DTE originated | 0,
128-255 | 00,
80-FF | |
| Out of order | 1 | 01 | |
| Remote procedure error | 3 | 03 | |
| Local procedure error | 5 | 05 | |
| Network congestion | 7 | 07 | |
| Remote DTE operational | 9 | 09 | |
| Network operational | 15 | 0F | |
| Incompatible destination | 17 | 11 | |
| Network out of order | 29 | 1D | |
4. Cause field codes for Registration | |||
| Confirmation packets | |||
| Invalid facility request | 3 | 03 | |
| Network congestion | 5 | 05 | |
| Local procedure error | 19 | 13 | |
| Registration/cancellation confirmed | 127 | 7F | |
| Diagnostic Description | Decimal Value | Hex Value | |
|---|---|---|---|
5. Diagnostic field codes for all packet types | |||
| No additional information | 0 | 00 | |
| Invalid P (S) | 1 | 01 | |
| Invalid P (R) | 2 | 02 | |
| Packet type invalid | 16 | 10 | |
| For state r1 | 17 | 11 | |
| For state r2 | 18 | 12 | |
| For state r3 | 19 | 13 | |
| For state p1 | 20 | 14 | |
| For state p2 | 21 | 15 | |
| For state p3 | 22 | 16 | |
| For state p4 | 23 | 17 | |
| For state p5 | 24 | 18 | |
| For state p6 | 25 | 19 | |
| For state p7 | 26 | 1A | |
| For state d1 | 27 | 1B | |
| For state d2 | 28 | 1C | |
| For state d3 | 29 | 1D | |
| Packet not allowed | 32 | 20 | |
| Unidentifiable packet | 33 | 21 | |
| Call on one-way logical channel | 34 | 22 | |
| Invalid packet type on a permanent virtual circuit | 35 | 23 | |
| Packet on unassigned logical channel | 36 | 24 | |
| Reject not subscribed to | 37 | 25 | |
| Packet too short | 38 | 26 | |
| Packet too long | 39 | 27 | |
| Invalid general format identifier | 40 | 28 | |
| Restart or registration packet with nonzero in bits 1 to 4 of octet 1, or bits 1 to 8 of octet 2 | 41 | 29 | |
| Packet type not compatible with facility | 42 | 2A | |
| Unauthorized interrupt confirmation | 43 | 2B | |
| Unauthorized interrupt | 44 | 2C | |
| Unauthorized reject | 45 | 2D | |
| Time expired | 48 | 30 | |
| For incoming call | 49 | 31 | |
| For clear indication | 50 | 32 | |
| For reset indication | 51 | 33 | |
| For restart indication | 52 | 34 | |
| For call deflection | 53 | 35 | |
| Call setup, call clearing, or registration problem | 64 | 40 | |
| Facility/registration code not allowed | 65 | 41 | |
| Facility parameter not allowed | 66 | 42 | |
| Invalid called DTE address | 67 | 43 | |
| Invalid calling DTE address | 68 | 44 | |
| Invalid facility/registration length | 69 | 45 | |
| Incoming call barred | 70 | 46 | |
| No logical channel available | 71 | 47 | |
| Call collision | 72 | 48 | |
| Duplicate facility requested | 73 | 49 | |
| Nonzero address length | 74 | 4A | |
| Nonzero facility length | 75 | 4B | |
| Facility not provided when expected | 76 | 4C | |
| Invalid CCITT-specified DTE facility | 77 | 4D | |
| Maximum number of call redirections or call deflections exceeded | 78 | 4E | |
| Miscellaneous | 80 | 50 | |
| Improper cause code from DTE | 81 | 51 | |
| Not aligned octet | 81 | 52 | |
| Inconsistent Q bit setting | 82 | 53 | |
| NIU problem | 83 | 54 | |
| International problem | 112 | 70 | |
| Remote network problem | 113 | 71 | |
| International protocol problem | 114 | 72 | |
| International link out of order | 115 | 73 | |
| International link busy | 116 | 74 | |
| Transit network facility problem | 117 | 75 | |
| Remote network facility problem | 118 | 76 | |
| International routing problem | 119 | 77 | |
| Temporary routing problem | 120 | 78 | |
| Unknown called DNIC | 121 | 79 | |
| Maintenance action (may apply to maintenance action within a national network) | 122 | 7A | |
| CCITT--Reserved for network-specific diagnostic information | 128-255 | 80-FF | |
| ISO-DTE specific signals | 160 | A0 | |
| DTE operational | 161 | A1 | |
| DTE not operational | 162 | A2 | |
| DTE resource constraint | 163 | A3 | |
| Fast select not subscribed | 164 | A4 | |
| Invalid partially full data packet | 165 | A5 | |
| D-bit procedure not supported | 166 | A6 | |
| Registration/cancellation confirmed | 167 | A7 | |
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