Deployment Guide for IM and Presence Service on Cisco Unified Communications Manager, Release 9.1(1)
High Availability client login profiles
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High Availability client login profiles

High Availability client login profiles

High Availability Login Profiles

Important Notes About High Availability Login Profiles

  • You can use the High Availability login profile tables in this section to configure the upper and lower client re-login values for your subcluster. You configure the upper and lower client login values by choosing Cisco Unified CM IM and Presence Administration > System > Service Parameters, and choosing Cisco Server Recovery Manager from the Service menu.
  • By configuring the upper and lower client re-login limits on your subcluster based on the tables we provide here, you can avoid performance issues and high CPU spikes in your deployment.
  • We provide a High Availability login profile for each IM and Presence Service node OVA (2, 4 or 6 GB), and for each High Availability deployment type, active/active or active/standby.
  • The High Availability login profile tables are calculated based on the following inputs:
    • The Users Moved Per Iteration service parameter. This parameter determines the number of users moved per iteration during a failover or a fallback operation. We provide a recommended value for the Users Moved Per Iteration service parameter for each High Availability login profile table.
    • The total number of users in the subcluster for Active/Standby deployments, or the node with highest number of users for Active/Active deployments.
  • You must configure the upper and lower client re-login limit values, and the Users Moved Per Iteration service parameter on both nodes in a subcluster. You must manually configure all these values on both nodes in the subcluster.
  • The upper and lower client re-login limit values must be the same on each node in the subcluster.
  • If you rebalance your users, you must reconfigure the upper and lower client re-login limit values based on the High Availability login profile tables.

Use High Availability Login Profile Tables

Use the High Availability login profile tables to retrieve the following values:

  • Client Re-Login Lower Limit service parameter value
  • Client Re-Login Upper Limit service parameter value.
  • Users Moved Per Iteration service parameter value.
Procedure
    Step 1   Choose a profile table based on your memory size, and your High Availability deployment type.
    Step 2   In the profile table, choose the number of users in your deployment (round up to the nearest value). If you have an active/standby deployment, use the node with the highest number of users.
    Step 3   Based on the Number of Users value for your subcluster, retrieve the corresponding lower and upper retry limits in the profile table.
    Step 4   Configure the lower and upper retry limits on IM and Presence Service by choosing Cisco Unified CM IM and Presence Administration > System > Service Parameters, and choosing Cisco Server Recovery Manager from the Service menu.
    Step 5   Retrieve the corresponding Users Moved Per Iteration service parameter value for your High Availability login profile table.
    Step 6   Configure the Users Moved Per Iteration value on IM and Presence by choosing Cisco Unified CM IM and Presence Administration > System > Service Parameters, and choosing Cisco Server Recovery Manager from the Service menu.

    Example High Availability Login Configurations

    Example 1: 6GB Active/Standby Standard Deployment

    You have 3000 users in your subcluster, with 2000 users on one node, and 1000 users on the second node. For active/standby deployments, we recommend you use the node with the highest number of users, in this case the node with 2000 users. Using the 15000 users full US (4 vCPU 8GB) active/active profile, you retrieve these lower and upper retry values:

    Number of Users

    Lower Retry Limit

    Upper Retry Limit

    2000

    40

    107


    Note


    The upper retry limit is the approximate time (seconds) it takes for all clients to login to their backup node after a failover occurs.


    You also configure the corresponding Users Moved per Iteration service parameter value for the 6 GB active/standby profile, which is 50.

    Example 2: 4GB Active/Active IM-Only Deployment

    You have 6800 users on the first node in your subcluster in an IM-only deployment. We recommend that you round up to the nearest value, so using the 5000 users full US (4 vCPU 8GB) active/active profile you retrieve the lower and upper retry value based on a number of users value of 7000:

    Number of Users

    Lower Retry Limit

    Upper Retry Limit

    7000

    280

    1447

    You also configure the corresponding Users Moved per Iteration service parameter value for the 6 GB active/standby profile, which is 25.

    1000 Full UC Active/Standby

    Table 1 1000 Full UC Active/Standby

    Number of Users

    Lower Retry Limit

    Upper Retry Limit

    100

    90

    115

    250

    90

    153

    500

    90

    215

    750

    90

    278

    1000

    90

    340

    1250 (IM only)

    90 (IM only)

    403 (IM only)

    1500

    90

    465

    1750

    90

    528

    2000

    90

    590

    2 GB Active/Standby Profile

    Corresponding Users Moved per Iteration service parameter value: 6

    Table 2 User Login Retry Limits for Standard Deployment (2 GB Active/Standby)

    Number of Users

    Lower Retry Limit

    Upper Retry Limit

    100

    17

    57

    250

    42

    142

    500

    83

    283

    750

    125

    425

    1000

    167

    567

    4 GB Active/Active Profile

    Corresponding Users Moved per Iteration service parameter value: 25

    Table 3 User Login Retry Limits for Standard Deployment (4GB Active/Active)

    Number of Users

    Lower Retry Limit

    Upper Retry Limit

    100

    4

    21

    500 (Default)

    20 (Default)

    103 (Default)

    1000

    40

    207

    1500

    60

    310

    2000

    80

    413

    2500

    100

    517

    Corresponding Users Moved per Iteration service parameter value: 25

    Table 4 User Login Retry Limits for IM-Only Deployment (4GB Active/Active)

    Number of Users

    Lower Retry Limit

    Upper Retry Limit

    3000

    120

    620

    3500

    140

    723

    4000

    160

    827

    4500

    180

    930

    5000

    200

    1033

    6000

    240

    1240

    7000

    280

    1447

    7500

    300

    1550

    4 GB Active/Standby Profile

    Corresponding Users Moved per Iteration service parameter value: 25

    Table 5 User Login Retry Limits for Standard Deployment (4GB Active/Standby)

    Number of Users

    Lower Retry Limit

    Upper Retry Limit

    100

    4

    14

    500

    20

    70

    1000

    40

    140

    1500

    60

    210

    2000

    80

    280

    2500

    100

    350

    3000

    120

    420

    3500

    140

    490

    4000

    160

    560

    4500

    180

    630

    5000

    200

    700

    Corresponding Users Moved per Iteration service parameter value: 25

    Table 6 User Login Retry Limits for IM-Only Deployment (4GB Active/Standby)

    Number of Users

    Lower Retry Limit

    Upper Retry Limit

    6000

    240

    840

    7000

    280

    980

    8000

    320

    1120

    9000

    360

    1260

    10000

    400

    1400

    11000

    440

    1540

    12000

    480

    1680

    13000

    520

    1820

    14000

    560

    1960

    15000

    600

    2100

    6 GB Active/Active Profile

    This section includes the upper and lower user login retry limits for both standard and IM-only deployments.

    User login retry limits for standard deployments

    Corresponding Users Moved per Iteration service parameter value: 50

    Table 7 User Login Retry Limits for Standard Deployments (6 GB Active/Active)-IM and Presence Release 9.0(1) and Later

    Number of Users

    Lower Retry Limit

    Upper Retry Limit

    100

    2

    10

    500 (Default)

    10 (Default)

    52 (Default)

    1000

    20

    103

    1500

    30

    155

    2000

    40

    207

    2500

    50

    258

    3000

    60

    310

    3500

    70

    362

    4000

    80

    413

    4500

    90

    465

    5000

    100

    517

    6000

    120

    620

    7000

    140

    723

    7500

    150

    775

    User retry limits for IM-only deployments

    Corresponding Users Moved per Iteration service parameter value: 50

    Table 8 User Login Retry Limits for IM-Only Deployments (6 GB Active/Active)-IM and Presence Release 9.0(1) and Later

    Number of Users

    Lower Retry Limit

    Upper Retry Limit

    3000

    60

    227

    3500

    70

    264

    4000

    80

    302

    4500

    90

    340

    5000

    100

    378

    6000

    120

    453

    7000

    140

    529

    7500

    150

    569

    8000

    160

    827

    9000

    180

    930

    10000

    200

    1033

    11000

    220

    1137

    12000

    240

    1240

    12500

    250

    1292

    6 GB Active/Standby Profile

    This section includes the upper and lower retry limits for both standard and IM-only deployments.

    User Login Retry Limits for Standard Deployments

    Corresponding Users Moved per Iteration service parameter value: 50

    Table 9 User Login Retry Limits for Standard Deployments (6 GB Active/Standby)-IM and Presence Release 9.0(1) and Later

    Number of Users

    Lower Retry Limit

    Upper Retry Limit

    100

    2

    7

    500 (Default)

    10 (Default)

    33 (Default)

    1000

    20

    65

    1500

    30

    98

    2000

    40

    131

    2500

    50

    164

    3000

    60

    196

    3500

    70

    229

    4000

    80

    262

    4500

    90

    295

    5000

    100

    327

    6000

    120

    393

    7000

    140

    458

    8000

    160

    524

    9000

    180

    589

    10000

    200

    655

    11000

    220

    720

    12000

    240

    785

    13000

    260

    851

    14000

    280

    916

    15000

    300

    982

    User Login Retry Limits for IM-only Deployments

    Corresponding Users Moved per Iteration service parameter value: 50

    Table 10 User Login Retry Limits for IM-Only Deployments (6 GB Active/Standby)-IM and Presence Release 9.0(1) and Later

    Number of Users

    Lower Retry Limit

    Upper Retry Limit

    6000

    120

    320

    7000

    140

    373

    8000

    160

    427

    9000

    180

    480

    10000

    200

    533

    11000

    220

    587

    12000

    240

    640

    13000

    260

    693

    14000

    280

    747

    15000

    300

    800

    16000

    320

    1047

    17000

    340

    1113

    18000

    360

    1178

    19000

    380

    1244

    20000

    400

    1309

    21000

    420

    1375

    22000

    440

    1440

    23000

    460

    1505

    24000

    480

    1571

    25000

    500

    1636