Buy or Renew
Buy or Renew
Cisco + Splunk: It’s a new day for your data. Learn more.
 
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 
cancel
Start a conversation
1195
Views
0
Helpful
7
Replies

MGCP Endpoint shows unregistered until controllers are restarted

nedudaniels
Level 1
Level 1

‎05-04-2020 02:07 PM

Hello,

 

I manage a cluster with eight subscribers in several locations.

I have an issue with one of the locations. From time to time, the MGCP endpoints show unregistered on the CUCM but is registered when checked on the router. This is usually resolved when i do shut and no shut under the controller E1.

The is happening at least every 48 hours.

 

 

OUTPUT of show isdn status:

dsl 1, interface ISDN Switchtype = primary-qsig
**** Slave side configuration ****
L2 Protocol = Q.921 0x0000 L3 Protocol(s) = CCM MANAGER 0x0003
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 1 CCBs = 0
The Free Channel Mask: 0xFFFF7FFF
Number of L2 Discards = 1, L2 Session ID = 125
Total Allocated ISDN CCBs = 0

Labels:
0 Helpful
7 Replies 7

Gregory Brunn
Spotlight
Spotlight

‎05-04-2020 07:08 PM

MGCP is pretty old school and still has some valid uses. You could convert the gateway to sip to cucm and see if that clears up the lack of registration issue as sip is not a layer 3 back haul to cucm.

 

With that being said... what does a show ccm-manager show on the gateway before you shut no shut?

 

Are you seeing slips or errrors with a show controller?

0 Helpful

Gregory Brunn
Spotlight
Spotlight
In response to Gregory Brunn

‎05-04-2020 07:10 PM

Also probably time to start your mgcp debugs and see why the connection is dropping or becoming not registered.

 

the show ccm-managed command is the first step is it actually dropping on the router side or is it a visibility thing from the risdb standpoint 

0 Helpful

sandip.khandekar
Level 1
Level 1
In response to Gregory Brunn

‎05-04-2020 08:49 PM

Hi

Please check domain and hostname should be same on mgcp router and gateway and verify mgcp bind interface is correct ?

 

Verify configuration as well as.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 Helpful

nedudaniels
Level 1
Level 1
In response to sandip.khandekar

‎05-05-2020 02:28 PM

Hello @sandip.khandekar 

Thanks for your response. The configuration seems fine. It works for over 24 hours (sometimes more) before showing unregistered.

0 Helpful

nedudaniels
Level 1
Level 1
In response to Gregory Brunn

‎05-05-2020 02:24 PM

Thanks for your response @Gregory Brunn .

Its a pretty large cluster. We have eight subscribers and running in eleven cities. Some of the locations don't have subscribers. The move to SIP will require a lot of management authorization but I'll definitely start up that discussion.

 

Also below are the outputs of the show ccm-manager, show controllers and show controllers E1:  I took them while the endpoints were unregistered.

 

show ccm-manager

MGCP Domain Name: XXXXXXXXXX.corp.local
Priority Status Host
============================================================
Primary Registered 1XX.XXX.XXX.XXX
First Backup Backup Ready 1XX.XXX.XXX.XXX
Second Backup None

Current active Call Manager: 1XX.XXX.XXX.XXX
Backhaul/Redundant link port: 2428
Failover Interval: 30 seconds
Keepalive Interval: 15 seconds
Last keepalive sent: 13:34:30 NIG Mar 16 2020 (elapsed time: 7w0d)
Last MGCP traffic time: 11:03:49 NIG May 5 2020 (elapsed time: 10:41:19)
Last failover time: 13:34:32 NIG Mar 16 2020 from (10.193.31.227)
Last switchback time: 13:35:02 NIG Mar 16 2020 from (10.193.31.226)
Switchback mode: Graceful
MGCP Fallback mode: Enabled/OFF
Last MGCP Fallback start time: 15:34:55 NIG Mar 8 2020
Last MGCP Fallback end time: 15:35:15 NIG Mar 8 2020
MGCP Download Tones: Disabled
TFTP retry count to shut Ports: 2

Backhaul/Redundant link is down
Configuration Auto-Download Information
=======================================
Current version-id: 1579765562-0ed1e18b-f292-488d-b14f-bf7863ddb105
Last config-downloaded:00:00:00
Current state: Waiting for commands
Configuration Download statistics:
Download Attempted : 73
Download Successful : 73
Download Failed : 0
TFTP Download Failed : 5
Configuration Attempted : 2
Configuration Successful : 2
Configuration Failed(Parsing): 0
Configuration Failed(config) : 0
Last config download command: New Registration
FAX mode: disable
Configuration Error History:

 

 

show controllers E1

 

E1 0/1/0 is up.
Applique type is Channelized E1 - balanced
Description: ***GLO TRUNK***
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20100222, FPGA: 13, spm_count = 0
Framing is NO-CRC4, Line Code is HDB3, Clock Source is Line.
Data in current interval (154 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
14 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
14 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 24 hours)
0 Line Code Violations, 0 Path Code Violations,
8024 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
8024 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 4 Unavail Secs

 

E1 0/2/3 is up.
Applique type is Channelized E1 - balanced
Description: ***MTN TRUNK***
No alarms detected.
alarm-trigger is not set
Version info FPGA Rev: 08121917, FPGA Type: PRK4
Framing is CRC4, Line Code is HDB3, Clock Source is Line.
International Bit: 1, National Bits: 11111
Data in current interval (202 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
38 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
38 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 24 hours)
0 Line Code Violations, 0 Path Code Violations,
16189 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
16217 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 30 Unavail Secs

 

 

and

show controllers:

sh controllers
Interface Serial0/1/0:15
Hardware is HDLC32
HDLC32 resource allocated to this interface:
Slot: 0, WIC Slot: 1, Port: 0
CRC on: 1, CRC size: 2, idle flags: 1, frame inverted: 0, clocking: 1
Channel-group: 15, Channel-group bitfield: 00010000
HDLC channel: 15, HDLC quad used: 00008000 HDLC channel bitfield: 00008000
Channel HW state: 2, tx_limited: 0, mci_txcount: 14, txring_limit: 15
Tx Q len: 0, idb throttled: FALSE, input_throttled: 0, input_qcount: 0
Sof_Sof: 0, No_Sof: 0, hdlc_sync_errs: 0, No Buf Err: 0
Rx_Dup: 0, Rx_RR_oos: 0, Rx_RR_nz: 2, Rx_Info_oos: 0
Rx_ppp_inv: 0, Rx_ppp_dup: 0
spurious_rx_isr_intr: 0, no_eof_fse_err: 5, buf_len_err: 0, boundary_align: 0
hdlc_info: 0x24DAF7A0


HDLC32 Register Address: 0xF0820000
-----------------------------------
Egress Desc Table Address (0004): 129D1000
Ingress Desc Table Address (0008): 129D3000
Channel Enable (000C): 00008000
Ingress Link Up/Down (0024): 00008000
Channel Assign Control (0028): 00000003
--More--  Configuration Command (002C): 00037828
Interrupt Enable (0030): 0000006F
Ingress Maximum Frame Size (0034): 00004669
TDM Bus Control (003C): 00000019

Rx BD index: 0, Rx BD Addr: 0x129D3784, Rx BD Val: 0x8880078F
Tx Head index: 12, Tx Tail index: 12
RX Ring:
desc addr: 0x129D3780, data_ptr: 0x15CAFF04, descriptor: 0x8880078F
desc addr: 0x129D3788, data_ptr: 0x15CB2C24, descriptor: 0x8880078F
desc addr: 0x129D3790, data_ptr: 0x15CB1924, descriptor: 0x8880078F
desc addr: 0x129D3798, data_ptr: 0x15CB1464, descriptor: 0x8880078F
desc addr: 0x129D37A0, data_ptr: 0x15CB03C4, descriptor: 0x8880078F
desc addr: 0x129D37A8, data_ptr: 0x15CB0FA4, descriptor: 0x8880078F
desc addr: 0x129D37B0, data_ptr: 0x15CB0884, descriptor: 0x8880078F
desc addr: 0x129D37B8, data_ptr: 0x15CB1B84, descriptor: 0x8880078F
desc addr: 0x129D37C0, data_ptr: 0x15CB0AE4, descriptor: 0x8880078F
desc addr: 0x129D37C8, data_ptr: 0x15CB29C4, descriptor: 0x8880078F
desc addr: 0x129D37D0, data_ptr: 0x15CB2504, descriptor: 0x8880078F
desc addr: 0x129D37D8, data_ptr: 0x15CB0624, descriptor: 0x8880078F
desc addr: 0x129D37E0, data_ptr: 0x15CB0164, descriptor: 0x8880078F
desc addr: 0x129D37E8, data_ptr: 0x15CB1204, descriptor: 0x8880078F
desc addr: 0x129D37F0, data_ptr: 0x15CB2044, descriptor: 0x8880078F
--More--  desc addr: 0x129D37F8, data_ptr: 0x15CB16C4, descriptor: 0x8880078F
TX Ring:
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
data_ptr: 0x00000000, descriptor: 0x0000078F
hdlc_chan hdlc_quad owner_idb chan chan_bitfield wic_slot port
========= ========= ========= ==== ============= ======== ====
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
--More--  -1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
15 8000 29662F24 15 10000 1 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
--More--  -1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0

--More--  
Interface Serial0/2/3:15
Hardware is HDLC32
HDLC32 resource allocated to this interface:
Slot 0, Vic_slot 2, Port 3
HDLC32: cmd_q_full 0, cmd_out_of_sync 0
CRC on 1, idle flags 1, frame inverted 0, clocking 1
Channel-group number 15, hdlc32 channel number 0, hdlc_info 0x294E51B8
Channel-group bitfield 0x10000, hdlc32 quad used 0x1 hdlc_channel_bitfield 0x1
Channel HW state: 2 tx_limited 0 mci_txcount 14 txring_limit 15
Tx Q len:0 idb throttled:FALSE input_throttled:0 input_qcount:0
Sof_Sof_Errs 0 No_Sof_Errs 0 hdlc_sync_errs 0 No Buf Err 0
thrtl_int_err 559 no_eof_fse_err 0 buf_len_err 0
idb->reset = 0x62CF90
Rx BD index 14 Rx BD Addr 0x15C3C074 Rx BD Val 0x88800000
Tx Head index 7, Tx Tail index 7
TX Ring:
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
--More--  data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
data_ptr: 0x00000000, descriptor: 0x00000000
RX Ring:
desc addr: 0x15C3C000, data_ptr: 0x15BA3684, descriptor: 0x88800000
desc addr: 0x15C3C008, data_ptr: 0x15BA2AA4, descriptor: 0x88800000
desc addr: 0x15C3C010, data_ptr: 0x15BA12E4, descriptor: 0x88800000
desc addr: 0x15C3C018, data_ptr: 0x15BA3424, descriptor: 0x88800000
desc addr: 0x15C3C020, data_ptr: 0x15BA2D04, descriptor: 0x88800000
desc addr: 0x15C3C028, data_ptr: 0x15BA2124, descriptor: 0x88800000
desc addr: 0x15C3C030, data_ptr: 0x15BA2384, descriptor: 0x88800000
desc addr: 0x15C3C038, data_ptr: 0x15BA1084, descriptor: 0x88800000
desc addr: 0x15C3C040, data_ptr: 0x15BA25E4, descriptor: 0x88800000
desc addr: 0x15C3C048, data_ptr: 0x15BA17A4, descriptor: 0x88800000
desc addr: 0x15C3C050, data_ptr: 0x15BA31C4, descriptor: 0x88800000
desc addr: 0x15C3C058, data_ptr: 0x15BA2844, descriptor: 0x88800000
desc addr: 0x15C3C060, data_ptr: 0x15BA1C64, descriptor: 0x88800000
--More--  desc addr: 0x15C3C068, data_ptr: 0x15BA2F64, descriptor: 0x88800000
desc addr: 0x15C3C070, data_ptr: 0x15BA1A04, descriptor: 0x88800000
desc addr: 0x15C3C078, data_ptr: 0x15BA1EC4, descriptor: 0x88800000
hdlc_chan hdlc_quad owner_idb chan chan_bitfield vic_slot port
========= ========= ========= ==== ============= ======== ====
0 1 2A8436FC 15 10000 2 3
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
--More--  -1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0
-1 0 0 0 0 0 0

 

0 Helpful

Gregory Brunn
Spotlight
Spotlight
In response to nedudaniels

‎05-05-2020 02:49 PM

So yeah your node is showing registered on the gateway side and you have slips.

 

Please check your clocking commands. 

 

Clear your counters on the T1 and ensure the slips come back.

 

 

0 Helpful

nedudaniels
Level 1
Level 1
In response to Gregory Brunn

‎05-05-2020 03:07 PM

I'll check this and give you feedback.

 

Thanks

0 Helpful
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Customers Also Viewed These Support Documents