Traces provided by TCP/IP

The TCP/IP program provides multiple kinds of traces to trace TCP/IP problems. For SNA Enterprise Extender (EE) traffic, the packet trace and data trace facilities in TCP/IP may prove beneficial, as they allow both the collection and formatting of this type of SNA traffic.

The OSAENTA command facility in TCP/IP might be beneficial for debugging other network problems, including VTAM® and SNA problems. The VARY TCPIP,,OSAENTA command provides the ability to trace data flowing over the PCI bus in an OSA-Express2 or later adapter configured in QDIO mode, whether the data is flowing to or from the network, TCP/IP, Enterprise Extender, or Linux. This trace facility enables you to determine whether the data flowing outbound to the adapter reached the network, or whether the data flowing inbound from the network reached the adapter. See z/OS Communications Server: IP Diagnosis Guide for details about how to enable and format the OSAENTA trace.

Figure 1. Sample TCP/IP trace of EE data (part 1 of 2)

1010 SLOVAKIA OSAENTA  00000007 20:43:11.637547 OSA-Express NTA   
To Interface      : EZANTAOGETHF                              Full=240    
Tod Clock        : 2006/10/18 20:43:11.637547   
Frame: Device ID  : N/A              Sequence Nr: 1462        Discard: 0 (OK)    
Segment #        : 0                Flags:  Tunnel Out Nta L3    
Source           : ::0    
Destination      : ::0    
Source Port      : 0                Dest Port: 0     Asid: 0000 TCB: 00000000   
IpHeader: Version : 6                Header Length: 40    
Trafcls          : 00               Dscp: 00 (CS0)           ECN: 00 (Default)    
Payload Length   : 182              Flow: 000000    
Hops             : 64               Protocol: UDP    
Source           : 2000:197:11:116::1    
Destination      : 2000:197:11:115::1
          
UDP    
Source Port      : 12001 (EE-Network) Destination Port: 12001 (EE-Network)    
Datagram Length  : 182              CheckSum: 15E1 FFFF
         
Ip Header          : 40               IP: 2000:197:11:116::1, 2000:197:11:115::1 Offset:  0  
000000 60000000 00B61140 20000197 00110116  00000000 00000001 20000197 00110115  
000020 00000000 00000001
         
Protocol Header    : 8                Port: 12001, 12001       Offset: 28  
000000 2EE12EE1 00B615E1
         
Data               : 174    Data Length: 174                   Offset: 30  
000000 280403C6 08D40000 00000000 00FF0012  C0C58100 0105433C 04000800 00007F00 |...F.M..........{Ea...........".|
000020 00063603 22853000 1B382000 0000005C  00000900 00000000 0000020B 91812905 |.....e.........*............ja..|
000040 02FF0003 D0000004 22F0F0F3 001910D5  C5E3E2D6 E4E3C84B D9D6D4C1 D5C9C100 |....}....003...NETSOUTH.ROMANIA.|
000060 00000000 00000000 4712C440 00001013  1C60D723 E3B459B0 6CF011D5 C5E3E2D6 |..........D .....-P.T...%0.NETSO|
000080 E4E3C84B E2D3D6E5 C1D2C9C1 06810000  01131C35 08900040 900212C4 10D5C5E3 |UTH.SLOVAKIA.a......... ...D.NET|
0000A0 E2D6E4E3 C84BD9D6 D4C1D5C9 C100                                          |SOUTH.ROMANIA.                  |
         
Padding, FCS       : 18  
000000 20000197 00110123 00000000 00000003  7C00                                |...p............@.              |

Figure 2. Sample TCP/IP trace of EE data (part 2 of 2)

Encapsulation      : 1                Offset: 30   
LLC: Dsap(I)      : 28 ()            Ssap(C): 04 (SNA)    
Unnumbered(P)    : 03 (UI)   
NLH Anr Route    
Tpf              : Network          Flags: No_Delay     
Type              ANR Label          TP        ER Number    Address     
NCE               D4000000 00000000  N/A        N/A           N/A   
Thdr    
TCID             : 12C0C581 00010543    
Reuse_Ct         : 12C0C581         Index: 0001              Element: 0543    
Flag1            : 3C04 (SMSG EMSG STRQ REPLY OPTS)    
Offset           : 32               Length: 127              Sequence: 1590    
Segment 22: Size : 12               Offset: 14               Adaptive RB Pacing    
 Flags           : 85 (Req Normal)  Rate: 3                  Reply: 0     
Field1          : 1783840          Field2: 0   
TH Version        : 5                Flags: RHI CMPLI         Sequence: 9    
Session Addr     : 00000000 00000002   
Rh - FMH Request  : FMH-5 (Attach)    
RH               : 0B9181 (FI BCI ECI DR1 ERI PI BBI CEBI)    
FMH5: Lenth      : 41               Type: 02FF               Flag2: 00 ()    
RscTp            : BASIC                                     Flag3: 00 ()    
TpNam(4)         : 22F0F0F3         'FMH-5 Attach-Locate'    
FQNAM(16)        : NETSOUTH.ROMANIA                          LUOW: 000000000000.0000
           
GDS 12C4: Len    : 71               Offset: 29               GDS Locate     
Flags           : 40               Srch_Num: 4115    
Control Vectors:    
CV60: Len        : 28               Offset: 32               Fully Qualified PCID     
PCID            : D723E3B459B06CF0 CP: NETSOUTH.SLOVAKIA    
CV81: Len        : 6                Offset: 4E               Context specific               
00 06810000 0113                           *.a....          *    
CV35: Len        : 28               Offset: 54               Extended Sense Data     
Sense           : 08900040         Flags: 90                       
RESOURCE NOT FOUND ON BROADCAST     
RUID            : 12C4     
PONAME          : NETSOUTH.ROMANIA      
3 control vectors formatted
         
LLC Header         : 3                                         Offset: 30  
000000 280403
         
ANR Header         : 12                                        Offset: 33  
000000 C608D400 00000000 0000FF00
         
Transport Header   : 32               12C0C581 00010543        Offset: 3F  
000000 12C0C581 00010543 3C040008 0000007F  00000636 03228530 001B3820 00000000 |.{Ea..........."......e.........|
         
TH5 Header         : 12               0000000000000002         Offset: 5F  
000000 5C000009 00000000 00000002
         
Request  Header    : 3                                         Offset: 6B  
000000 0B9181
         
Data               : 112    Data Length: 112                   Offset: 6E  
000000 290502FF 0003D000 000422F0 F0F30019  10D5C5E3 E2D6E4E3 C84BD9D6 D4C1D5C9 |......}....003...NETSOUTH.ROMANI|
000020 C1000000 00000000 00004712 C4400000  10131C60 D723E3B4 59B06CF0 11D5C5E3 |A...........D .....-P.T...%0.NET|
000040 E2D6E4E3 C84BE2D3 D6E5C1D2 C9C10681  00000113 1C350890 00409002 12C410D5 |SOUTH.SLOVAKIA.a......... ...D.N|
000060 C5E3E2D6 E4E3C84B D9D6D4C1 D5C9C100                                      |ETSOUTH.ROMANIA.                |
         
Padding, FCS       : 18  
000000 20000197 00110123 00000000 00000003  7C00                                |...p............@.              |