HPE FlexNetwork MSR Series Comware 5 Layer 2 - Wan Access Configuration Guide

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[RouterB] dlsw remote 1.1.1.1
[RouterB] dlsw bridge-set 7
[RouterB] interface ethernet 1/0
[RouterB-Ethernet1/0] bridge-set 7
Configure an ACL and apply it to the remote peer to implement SAP address filtering. This function
also applies to the SDLC network.
Troubleshooting DLSw
Proper communication of the DLSw requires sound cooperation between involved SNA devices and
DLSw-capable routers. A fault in the cooperation between any two nodes can cause connection
failure.
Unable to establish a TCP connection
Symptom
A TCP connection cannot be established between the local peer and any remote peer. In the output
from the display dlsw remote command, the status is DISCONNECT.
Analysis
TCP connection establishment is the first step in a successful DLSw connection. Failure in
establishing a TCP connection is usually caused by problems between the two routers, such as
incorrect IP routing configuration.
Solution
Check whether the remote peer is reachable by using the ping command. Alternatively, use the
display ip routing-table command to check whether a route to the network segment exists. After
both sides have established a correct route, the TCP connection can be created.
Unable to establish a DLSw circuit
Symptom
A DLSw circuit cannot be correctly established. The display dlsw circuit command output shows
that the virtual circuit is not in the CONNECTED state.
Analysis
Many reasons can cause circuit establishment failure.
• A TCP connection with the peer end must be successfully established first.
• If a TCP connection can be successfully established but circuit establishment fails, the problem
is usually caused by abnormal cooperation between the router and the SNA device, most likely
from some incorrect SDLC configuration.
Solution
1. First enable the SDLC debugging, and check whether the SDLC interface can receive/forward
frames correctly by executing the display interface command. If the interface cannot
receive/forward frames correctly, possible causes are incorrect encoding scheme, baud rate or
clock configuration on the interface. Modify the interface configuration of the router or adjust the
configuration parameters of the SDLC device.
2. If frames can be received and forwarded correctly, examine whether the configuration of the PU
type is correct. Use the sdlc xid command to configure the XID and change the PU type.

HPE FlexNetwork MSR Series Specifications

General

Brand	HPE
Model	FlexNetwork MSR Series
Category	Network Router
Language	English