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Differences between graceful, immediate, up-time?

techToddler
Level 1
Level 1

Hello Friends,

I am requesting your help in understanding the concepts for the below terms.

fallback-mgcp - What does this command denote?

switchback graceful - What is graceful and immediate means. What will happen if I choose Graceful?

Switchover - what is the difference between switch back and switch over.

stcapp - what is stcapp. I see this under a dial-peer? how do you expand this?

Regards

Sanjay.

1 Accepted Solution

Accepted Solutions

Vivek Batra
VIP Alumni
VIP Alumni

fallback-mgcp is required during SRST. As you might be aware that MGCP doesn't use local dial peers in gateway hence during SRST (where there is no WAN connectivity between gateway and call manager), this command enables usage of local dial peers for calling purpose. What it basically does removes the isdn bind-l3 command from serial interface so that local dial peers can be utilized. When WAN comes, isdn bind-l3 command is added again to utilize the MGCP process.

swithback command allows when to rollover MGCP process again if WAN becomes available. Graceful (this is default) specifies the call agent should take over the process after last call ends. Immediate won't wait for calls to end.

switchover command allows you to manually switch from primary to secondary server.

- Vivek

View solution in original post

3 Replies 3

Sreekanth Narayanan
Cisco Employee
Cisco Employee

You can use the voice command reference to find out what each of those commands do.

http://www.cisco.com/en/US/docs/ios/12_3t/voice/command/reference/vrht_c4_ps5207_TSD_Products_Command_Reference_Chapter.html#wp1072760

STCapp is the process used by the router to register FXO/FXS voice ports on the router to CUCM as SCCP endpoints. If you use MGCP, you will see 'service mgcpapp' instead.

Graceful indicates that if there are ongoing calls, the IOS will wait for these calls to end before switching back from its secondary to primary call agent. Immediate indicates that the gateway will switchback immediately from secondary to primary, which can lead to the loss of the calls.

Thank you Vivek and Sreekanth.

Regards

Sanjay.

Vivek Batra
VIP Alumni
VIP Alumni

fallback-mgcp is required during SRST. As you might be aware that MGCP doesn't use local dial peers in gateway hence during SRST (where there is no WAN connectivity between gateway and call manager), this command enables usage of local dial peers for calling purpose. What it basically does removes the isdn bind-l3 command from serial interface so that local dial peers can be utilized. When WAN comes, isdn bind-l3 command is added again to utilize the MGCP process.

swithback command allows when to rollover MGCP process again if WAN becomes available. Graceful (this is default) specifies the call agent should take over the process after last call ends. Immediate won't wait for calls to end.

switchover command allows you to manually switch from primary to secondary server.

- Vivek