System information

Troubleshooting IBM

Book Title

10-216

Troubleshooting IBM

This section focuses on connectivity and performance problems associated with bridging and

routing in IBM-based networks. This section covers speciﬁc IBM-related symptoms, the problems

that are likely to cause each symptom, and the solutions to those problems.

This section covers the most common network issues in IBM networks:

• Local SRB: Host Cannot Connect to Server

• Local RSRB: Routing Does Not Function

• RSRB: Host Cannot Connect to Server (Peers Not Open)

• RSRB: Host Cannot Connect to Server (Peers Open)

• RSRB: Periodic Communication Failures

• RSRB: NetBIOS Client Cannot Connect to Server

• Translational Bridging: Client Cannot Connect to Server

• SRT Bridging: Client Cannot Connect to Server

• SDLC: Router Cannot Communicate with SDLC Device

• SDLC: Intermittent Connectivity

• SDLC: Client Cannot Connect to Host over Router Running SDLLC

• SDLC: Sessions Fail over Router Running STUN

• CIP: CLAW Connection Does Not Come Up

• CIP: No Enabled LED On

• CIP: CIP Will Not Come Online to Host

• CIP: Router Cannot ping Host or Host Cannot ping Router

• CIP: Host Cannot Reach Remote Networks

• CIP: Host Running Routed Has No Routes

Local SRB: Host Cannot Connect to Server

Symptom: Connections fail over a router conﬁgured as an SRB connecting two or more Token

Rings.

Table 10-1 outlines the problems that might cause this symptom and describes solutions to those

problems.

Table 10-1 Local SRB: Host Cannot Connect to Server