| Feature 
 | gtplib 
 | ggsn 
 | sgsnemu 
 | notes 
 | 
    
      | 7.2
Path Management Messages 
 | 
 | 
 | 
 | 
 | 
    
      | 7.2.1 Echo Request | Supported 
 | Supported | Supported | 
 | 
    
      | 7.2.2 Echo Response 
 | Supported | Supported | Supported | 
 | 
    
      | 7.2.3 Version Not Supported 
 | Supported | Supported | Supported | 
 | 
    
      | 7.2.4 Supported Extension
Headers Notification 
 | Supported | Supported | Supported | 
 | 
    
      | 7.3
Tunnel Management Messages 
 | 
 | 
 | 
 | 
 | 
    
      | 7.3.1 Create PDP Context Request 
 | Supported | Supported | Supported | 1 
 | 
    
      | 7.3.2 Create PDP Context Response | Supported | Supported | Supported | 
 | 
    
      | 7.3.3 Update PDP Context Request | Supported | Supported | Not
applicable | 1 
 | 
    
      | 7.3.4 Update PDP Context Response | Supported | Supported | Not
applicable | 
 | 
    
      | 7.3.5 Delete PDP Context Request | Supported | Supported | Supported | 
 | 
    
      | 7.3.6 Delete PDP Context Response | Supported | Supported | Supported | 
 | 
    
      | 7.3.7 Error Indication 
 | Supported | Supported | Supported | 
 | 
    
      | 7.3.8 PDU Notification Request 
 | Unsupported | Unsupported | Unsupported | 
 | 
    
      | 7.3.9 PDU Notification Response | Unsupported | Unsupported | Unsupported | 
 | 
    
      | 7.3.10 PDU Notification Reject
Request | Unsupported | Unsupported | Unsupported | 
 | 
    
      | 7.3.10 PDU Notification Reject
Response | Unsupported | Unsupported | Unsupported | 
 | 
    
      | 7.4
Location Management Messages 
 | 
 | 
 | 
 | 
 | 
    
      | 7.4.1 Send Routeing Information
for GPRS Request 
 | Unsupported | Unsupported | Not
applicable | 
 | 
    
      | 7.4.2 Send Routeing Information
for GPRS Response | Unsupported | Unsupported | Not
applicable | 
 | 
    
      | 7.4.3 Failure Report Request 
 | Unsupported | Unsupported | Not
applicable | 
 | 
    
      | 7.4.3 Failure Report Response | Unsupported | Unsupported | Not
applicable | 
 | 
    
      | 7.4.5 Note MS GPRS Present
Request 
 | Unsupported | Unsupported | Not
applicable | 
 | 
    
      | 7.4.6 Note MS GPRS Present
Response | Unsupported | Unsupported | Not
applicable | 
 | 
    
      | 7.5
Mobility Management Messages 
 | 
 | 
 | 
 | 
 | 
    
      | 7.5.1 Identification Request 
 | Unsupported | Not
applicable 
 | Not
applicable | 
 | 
    
      | 7.5.2 Identification Response | Unsupported | Not
applicable | Not
applicable | 
 | 
    
      | 7.5.3 SGSN Context Request 
 | Unsupported | Not
applicable | Not
applicable | 
 | 
    
      | 7.5.4 SGSN Context Response | Unsupported | Not
applicable | Not
applicable | 
 | 
    
      | 7.5.5 SGSN Context Acknowledge | Unsupported | Not
applicable | Not
applicable | 
 | 
    
      | 7.5.6 Forward Relocation Request 
 | Unsupported | Not
applicable | Not
applicable | 
 | 
    
      | 7.5.7 Forward Relocation Response | Unsupported | Not
applicable | Not
applicable | 
 | 
    
      | 7.5.8 Forward Relocation Complete | Unsupported | Not
applicable | Not
applicable | 
 | 
    
      | 7.5.9 Relocation Cancel Request 
 | Unsupported | Not
applicable | Not
applicable | 
 | 
    
      | 7.5.10 Relocation Cancel Response | Unsupported | Not
applicable | Not
applicable | 
 | 
    
      | 7.5.11 Forward Relocation
Complete Acknowledge 
 | Unsupported | Not
applicable | Not
applicable | 
 | 
    
      | 7.5.12 Forward SRNS Context
Acknowledge | Unsupported | Not
applicable | Not
applicable | 
 | 
    
      | 7.5.13 Forward SRNS Context 
 | Unsupported | Not
applicable | Not
applicable | 
 |