Contents

• High Availability client login profiles
• High Availability login profiles
• Important notes about High Availability login profiles
• Use High Availability login profile tables
• Example High Availability login configurations
• 2 GB active/active profile
• 2 GB active/standby profile
• 4 GB active/active profile
• 4 GB active/standby profile
• 6 GB active/active profile
• 6 GB active/standby profile

High Availability client login profiles

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• High Availability login profiles
• 2 GB active/active profile
• 2 GB active/standby profile
• 4 GB active/active profile
• 4 GB active/standby profile
• 6 GB active/active profile
• 6 GB active/standby profile

High Availability login profiles

• Important notes about High Availability login profiles
• Use High Availability login profile tables
• Example High Availability login configurations

• Important notes about High Availability login profiles
• Use High Availability login profile tables
• Example High Availability login configurations

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 selecting Cisco Unified CM IM and Presence Administration > System > Service Parameters, and selecting 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 server memory size (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.

Related Tasks

Configure advanced service parameters for Server Recovery Manager

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

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Step 1	Select a profile table based on your memory size, and your High Availability deployment type.
Step 2	In the profile table, select 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 by selecting Cisco Unified CM IM and Presence Administration > System > Service Parameters, and selecting 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 selecting Cisco Unified CM IM and Presence Administration > System > Service Parameters, and selecting Cisco Server Recovery Manager from the Service menu.

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Related References

Example High Availability login configurations

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 6 GB active/​standby 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 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 4 GB 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 4 GB active/​active profile which is 25.

2 GB active/active profile

Corresponding Users Moved per Iteration service parameter value: 6

Table 1 User Login Retry Limits for Standard Deployment (2 GB Active/Active)

Number of Users	Lower Retry Limit	Upper Retry Limit
100	17	83
250 (Default)	42 (Default)	208 (Default)
500	83	417

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