Cisco Cisco Expressway Release Notes
Changes in X8.1.1
Cisco Expressway Software Release Notes (X8.2.1)
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Changes in X8.1.1
Unified Communications: mobile and remote access
Cisco Unified Communications mobile and remote access is a core part of the Cisco Collaboration Edge
Architecture. It allows endpoints such as Cisco Jabber to have their registration, call control, provisioning,
messaging and presence services provided by Cisco Unified Communications Manager (Unified CM) when
the endpoint is not within the enterprise network. The Expressway provides secure firewall traversal and line-
side support for Unified CM registrations.
Architecture. It allows endpoints such as Cisco Jabber to have their registration, call control, provisioning,
messaging and presence services provided by Cisco Unified Communications Manager (Unified CM) when
the endpoint is not within the enterprise network. The Expressway provides secure firewall traversal and line-
side support for Unified CM registrations.
Support to modify Maximum transmission unit (MTU) size
You can configure the maximum transmission unit (MTU) for each network interface on the
System > IP
page.
Diagnostic logging
The tcpdump facility has been removed from the
Diagnostic logging
tool.
Jabber Guest
Jabber Guest support has been removed (it was previously provided as a feature preview in X8.1). It will be
reintroduced in a future release of Expressway software.
reintroduced in a future release of Expressway software.
Resolved issues
Resolved in X8.2.1
Identifier
Description
CSCup29435
Symptoms: Expressway reports an application error, and the process restarts automatically. An
alarm is raised reporting that an unexpected software error was detected.
alarm is raised reporting that an unexpected software error was detected.
Conditions: Rare, under investigation.
Workaround: None, the app process will automatically be restarted.
CSCup46518
Symptoms: A remote endpoint registered to UCM via Mobile and Remote Access may fail to
register if an Expressway-C in the cluster is out of service (shutdown, or otherwise unreachable).
Conditions: One Expressway-C in the cluster is out of service, and the route created by the
endpoint happens to use that server.
register if an Expressway-C in the cluster is out of service (shutdown, or otherwise unreachable).
Conditions: One Expressway-C in the cluster is out of service, and the route created by the
endpoint happens to use that server.
Workaround: Restart the endpoint, which will cause it to obtain updated information about the
available Expressway-C servers, which will not include the one that is out of service.
available Expressway-C servers, which will not include the one that is out of service.
CSCup01126
Symptoms:Expressway restart due to internal application crash with "An unexpected software
error was detected in app[15225]: SIGSEGV (address not mapped to object)
@0x0000000000000000" alarm message.
error was detected in app[15225]: SIGSEGV (address not mapped to object)
@0x0000000000000000" alarm message.
Table 1: Issues resolved in X8.2.1