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Number of IP Addresses per Call Leg Size

The table below defines the number of

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call legs supported for a given number of IP Addresses assuming UDP ports 4,000 through 64,444 are configured for media port usage.

For 

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media resource allocation scenarios, the 
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requires a minimum of 10 IP addresses configured to support 150,000 call legs (one Primary IP address plus 9 alternate IP addresses in non-VLAN configuration).

Number of IP Addresses Needed to Support Call Legs

Number of Call LegsNumber of IP
Addresses
150,00010
140,0009
130,0008
120,0007
110,0006
96,0005
80,0004
64,0003
45,0002
25,0001

For example, to use 100,000 call legs you must configure at least six (6) IP addresses because five IP addresses will only allow up to 96,000 call legs through the

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.

The  

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supports configuring up to 14 alternate media addresses. For more details, see Alternate Media IP Addresses Support.

Configuration Limits

The 

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supports a large number of configurable objects and is capable of supporting from a few very large customers to thousands of small customers. Important details about the provisioning system include:

  • Interactive provisioning of configuration objects (such as commands typed at the CLI or entered in the EMA or EMS) does not affect call handling or capacity.
  • Provisioning behavior does not depend on the number of existing entities. The addition of the 10,000th instance is roughly comparable to adding the 1st such instance.
Caution

Bulk or non-interactive provisioning may affect call handling. Operations such as sourcing a CLI script with many configuration commands (or even a few commands affecting particularly large objects) should only be done during a maintenance window or at non-busy-hour intervals. 

Provisioning Limits

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provisioning limits are shown in the following table.

Info

 The term '5xx0' represents SBC models 5100, 5200, 5110 and 5210.

SBC Provisioning Limits

 

 

Configuration Objects

Provisioning Limits

 

SBC 7000

 

SBC 5400

 

SBC 5xx0

SBC SWe
VM  Memory < 18 GiB RAMVM  Memory >= 18 GiB RAM
Address Contexts4,0002,0482,048128700
SIP Signaling Ports4,0002,0482,048128700
H.323 Signaling Ports2,0482,0482,048128128
SIP Trunk Groups

40,000

20,000

10,000

1281,400
H.323 Trunk Groups

2,048

2,048

2,048

128256
Gateway Trunks

128

128128  
Maximum IP Trunk Groups
of All Signaling Types
40,00020,00010,0001281,400
Zones4,0002,0482,048128700
DNS Groups2,0482,0482,048128128
IP Interfaces4,0004,0004,0001282,048
IP Interfaces Groups4,0002,0482,0481281,024
Alternate Media IP Addresses
(per LIF)
2542542542543

1283

IP Addresses8,192 4,096  
IP ACLs50,000125,000217,8242 1,80042,8005
Dynamic Black List Entries4,0002,0001,000 100100
SIP Adaptor Profiles256256256256256

Footnotes

1 - Includes approximately 10,000 IP ACLs for signaling ports (2 x 4,000 SIP, 2,000 H323) and 100 IP ACLs for OAM. A maximum of 35,648 IP ACLs are allowed for users.

2 - Includes approximately 4,000 IP ACLs for signaling ports and 100 IP ACLs for OAM. A maximum of 11,232 (for SBC 51x0/52x0 series) and 17,824 (for SBC 5400) IP ACLs are allowed for users.

3 - SBC SWe supports a maximum of 64 alternate media IP addresses per vNIC.

4 - The number of user-defined ACLs is 772.

5 - The number of user-defined ACLs is 628.

Info

One GiB (gibibyte) = 2^30  (1,073,741,824 bytes).

 

The time required to add an object to an existing configuration is immaterial (It takes much longer to actually type the command or complete the EMA/EMS fields). However, bulk loading of a large configuration from the CLI may take a substantial amount of time. 

Caution

See cautionary note above about the potential bulk configuration loading on call handling performance. 

While the 

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supports large limits on multiple types of configuration objects, a few typical usage scenarios exist. The length of time to bulk load a configuration depends on the size of the configuration. Consequently, four
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profile classes are defined to give customers a rough idea for the bulk loading time relevant to their configuration:

  • 1K profile – comprised of 1,000 instances each of Address Contexts, Zones, IP Interface Groups, IP Interfaces, Signaling Ports, and Trunk Groups
  • 4K profile – comprised of 4,000 instances each of Address Contexts, Zones, IP Interface Groups, IP Interfaces, Signaling Ports, and Trunk Groups
  • 4K/10K profile – comprised of 4,093 instances of IP Interfaces, 2,048 instances each of Zones, Address Contexts, IP Interface Groups, SIP Signaling Ports, 10,000 IP Peer, and 10,000 IP Trunks (see Note below).
  • 4K/40K profile [SBC 7000 series only] – comprised of 4,000 instances each of Address Contexts, Zones, IP Interface Groups, IP Interfaces, Signaling Ports; and 40,000 Trunk Groups
Note

If both IPv4 and IPv6 are combined on every sipSigPort on an SBC 5200, the system limits the number of sipSigPorts to 1,980.

Maximum CLI Load Times

The following table lists the maximum CLI load times for the above profile classes.

Maximum CLI Load Times

Configuration ProfileMaximum CLI Load Time
1K2.5 hours

4K

4 hours
4K/10K3 hours
4/40K (7000 only)10 hours

For a system previously loaded with configuration, the start-up time also depends on the amount of configuration. The start-up time is considered the time from when the

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application is started (by PM) to the time that the
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is ready to accept calls.

Note that this start-up time is typically only relevant to standalone systems after an upgrade. For a HA system, the standby is activated to handle calls while the SBC is being started or restarted. 

Approximate Start-up Times for Standalone SBC

The following table lists the approximate start-up times for a standalone

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based on its configuration profile:

Approximate Start-up Times for Standalone SBC

Configuration ProfileMaximum Time
to Service Ready
No configuration5 minutes
1K10 minutes
4K20 minutes
4K/10K22 minutes
4K/40K (7000 only)45 minutes

 

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