Cisco Cisco Packet Data Gateway (PDG)
MME SGs Service Configuration Mode Commands
vlr-failure ▀
Command Line Interface Reference, StarOS Release 18 ▄
7433
vlr-failure
Configures automatic VLR failure handling for the SGs service
Product
MME
Privilege
Administrator
Mode
Exec > Global Configuration > Context Configuration > MME SGs Service Configuration
configure > context context_name > sgs-service service_name
Entering the above command sequence results in the following prompt:
[context_name]host_name(config-sgs-service)#
Syntax
[ no ] vlr-failure duration minutes backoff-timer seconds detach-rate number [ -noconfirm
]
]
no
Removes the configuration from this service, which disables automatic detection and offload of VLRs when
an SGs association failure occurs.
an SGs association failure occurs.
duration minutes
Specifies the amount of time in minutes during which all qualifying UEs will be detached.
The MME splits this duration into n intervals, 5 seconds apart. For example, a setting of 2 minutes with 100
subscribers would result in the MME processing all subscribers in the first 2 intervals (10) seconds. Any
subscribers remaining at the expiry of the duration will not be processed.
If no detach rate is defined using the
The MME splits this duration into n intervals, 5 seconds apart. For example, a setting of 2 minutes with 100
subscribers would result in the MME processing all subscribers in the first 2 intervals (10) seconds. Any
subscribers remaining at the expiry of the duration will not be processed.
If no detach rate is defined using the
detach-rate
keyword, a maximum of 50 subscribers are processed
per interval. Any remaining UEs will remain attached until detached by other means (UE/network detach,
etc).
etc).
minutes
must be an integer from 1 through 3000.
backoff-timer seconds
Specifies the period of time the MME will wait following the detection of a VLR condition before starting the
controlled release of affected UEs. The MME begins offloading UEs following the expiry of this backoff
timer. If the VLR has recovered before the backoff timer expires, no offloading is performed.
controlled release of affected UEs. The MME begins offloading UEs following the expiry of this backoff
timer. If the VLR has recovered before the backoff timer expires, no offloading is performed.
seconds
must be an integer from 1 to 3000.
detach-rate number
This optional keyword specifies a maximum number of detaches to perform per 5 second cycle.
For example, if 12,000 subscribers are to be detached during a 5 minute window (duration = 5 minutes), the
MME calculates 60 cycles (5 minutes / 5-second cycles) which results in 200 UEs to detach per cycle.
If the detach-rate is configured to 100, the MME will only detach 100 per 5 second cycle for, resulting in a
total of 6000 detaches. Any remaining UEs will remain attached until detached by other means (UE/network
detach, etc).
For example, if 12,000 subscribers are to be detached during a 5 minute window (duration = 5 minutes), the
MME calculates 60 cycles (5 minutes / 5-second cycles) which results in 200 UEs to detach per cycle.
If the detach-rate is configured to 100, the MME will only detach 100 per 5 second cycle for, resulting in a
total of 6000 detaches. Any remaining UEs will remain attached until detached by other means (UE/network
detach, etc).
number
must be an integer from 1 to 2000.