Caveats for Release S-Cz8.1.0M1

The caveats below apply to release S-Cz8.1.0M1 of the Subscriber-Aware Load Balancer (SLB). For Session Border Controller (SBC) Caveats, when they are (SLB) cluster members, refer to the appropriate documentation for the SBC.

Cluster Membership

• Each SBC may be a member of only one cluster, and a cluster may be associated with only one SLB redundant pair.

Setup Product

• This release officially supports only the SLB product type, and only on the Acme Packet 6100 platform. You will not be able to configure the platform to run as the SBC product type using this release.

Protocol Support

• The Oracle Communications Session Border Controller's FTP Server is deprecated. Only SFTP server services are supported.
• FTP Client access for features such as HDR/CDR push remains.
• When handling TCP calls through load-balanced clusters, the SBC, in some scenarios, attempts to initiate the TCP handshake using the ephemeral port established for SIP services over the SBC-SLB tunnel instead of the end station's port. These calls fail because the SBC cannot utilize the tunnel properly. Example scenarios include:

  • After an HA SBC pair that is a member of a cluster fails over, the new active contains correct registrations, but not end station sockets. TCP calls to those end stations fail. When these end stations refresh their registrations, these calls can succeed.
  • TCP calls originating from the core to an SBC that is a member of a cluster, then the SLB, then toward end stations that are not registered at the SBC fail. The target end stations must register for these calls to succeed.

Fragmented Ping Support

• The Oracle Communications Session Border Controller does not respond to inbound fragmented ping packets.

Inactivity Age-out of Trusted Endpoints

• The inactivity age-out functionality for trusted endpoints is not yet implemented.

Physical Interface RTC Support

• After changing any Physical Interface configuration, a system reboot is required.
• Output from the packet trace local feature on hardware platforms running this software version may display invalid MAC addresses for signaling packets.

High Availability (HA) Pairing

• An Acme Packet 6100 running release S-Cz7.3.10 as a Subscriber-Aware Load Balancer may not be a member of a High Availability pair that includes an Acme Packet 4500.

Command Line Interface Discrepancies

• The SLB's tunnel-config element includes a tls-profile parameter. This parameter is not functional.
• A platform running as a Subscriber-Aware Load Balancer (SLB) can still configure Session Border Controllers (SBC)-specific group-names.

Upgrade from L-Cx1.5.0 configuration files

• When you upgrade from a configuration file created in release L-Cx1.5.0, the parameter cluster-config>inactive-sd-limit has an incorrect value after boot.
  • Workaround - Whatever the value of the parameter in the L-Cx1.5.0 config file, after the first boot, the value in the S-Cz7.3.10 file is 1000 times the original value. For example if the value was 1800 (the default value in L-Cx1.5.0), the S-Cz7.3.10 value is 1800000. You can change the value of the cluster-config>inactive-sd-limit back to the value in the L-Cx1.5.0 version of the config file and reboot the device, or change the parameter dynamically.

Incorrect Values Displayed by the show datapath Command

• The show datapath np-stats tunnel command may display the same amount of bandwidth committed to Maximum Signaling and Trusted traffic.