Configuration procedure
Configuring XOT
When you configure XOT, follow these guidelines:
In SVC mode, X.25 routes are required.
Because the default two-way channel range (LTC=1, HTC=1024) does not support PVC configuration, you must specify a virtual circuit range by using the x25 vc-range command to create a PVC.
To configure XOT:
Step | Command | Remarks |
---|---|---|
1. Enter system view. | system-view | N/A |
2. Enable X.25 switching. | x25 switching | Required due to X.25 extension. Not enabled by default. |
3. Enter interface view. | interface interface-type interface-number | N/A |
4. Specify an IP address for the IP side interface. | ip address ip-address { mask | mask-length } or ip address unnumbered interface interface-type interface-number | Make sure the IP network operates correctly. |
5. Return to system view. | quit | N/A |
6. Configure an XOT route to route X.25 packets through the IP network. |
| Use one of the methods. |
7. Configure XOT optional attributes. | Optional. |
For more information about IP address configuration, see HPE FlexNetwork MSR Router Series Comware 5 Layer 3—IP Services Command Reference.
Configuring XOT optional attributes
After a TCP link is established, TCP will also not be cleared easily even if the link is interrupted. However, after the Keepalive attribute is configured, the router will periodically send the detection packet to check the availability of the link. If it has not received the acknowledgement after sending packets for many times, the router will deem the link faulty and will initiatively clear the TCP connection.
To configure XOT optional attributes:
Step | Command | Remarks |
---|---|---|
1. Enter system view. | system-view | N/A |
2. Configure the SVC Keepalive and source attributes. | x25 switch svc [ -number ] x.121-address [ sub-dest destination-address | sub-source source-address ] * xot ip-address&<1-6> [ xot-option ] | Optional. |
3. Configure the PVC Keepalive and source attributes. |
| N/A |
Table 7: Options of the xot-option argument
Option | Indicates |
---|---|
timer seconds | Keepalive timer for the XOT connection, in the range 1 to 3600 seconds. On its timeout the router begins to send keepalive messages to test availability of the connection. |
retry times | The maximum number of Keepalive packet sending attempts, in the range 3 to 3600. When the number of keepalive packet sending attempts exceeds the limit, the XOT connection is disconnected. |
source interface-type interface-number | Interface where the XOT connection is initiated. |