Alteon Application Switch Operating System Application Guide
Health Checking
Document ID: RDWR-ALOS-V2900_AG1302 491
The following RADIUS-specific arguments are available:
• Type—Specify the type of the RADIUS service that must be monitored. Options are Accounting
and Authentication.
• Username and password—Specifies the username and password parameters that are
mandatory for RADIUS Authentication health check. An Inherit value can be configured for the
two parameters to allow the user name and password configuration using the group content
(content includes user:password).
• Shared secret—Specifies the shared secret parameter that is mandatory for a RADIUS
Authentication health check. An Inherit value can be configured to allow the parameter
configuration using the group secret value or advanced health check secret value if the group
secret is empty.
Note: For a RADIUS Authentication health check if the username, password and secret are
unspecified (directly or using the group configuration), the health check performed for that group is
TCP.
The following pre-defined RADIUS health checks are available:
• radius-auth—RADIUS Authentication health check with username, password and shared secret
set to Inherit.
• radius-acc—RADIUS Accounting health check with username, password empty and shared
secret set to Inherit.
• radius-aa—Performs either a RADIUS Accounting or a RADIUS Authentication health check
based on the server port (rport) configured on the service. If the server port is not a standard
RADIUS port (1812 or 1813), a TCP health check is performed. For this health check, the
username, password and shared secret are set to Inherit.
SSL HELLO Health Checks
Alteon can query the health of the SSL servers by sending an SSL client “Hello” packet and then
verifying that the response is a valid Server Hello response.
During the handshake, the user and server exchange security certificates to negotiate an encryption
and compression method and establish a session ID for each session.
You perform the health check using either SSL version 2 or SSL version 3.
Two pre-defined SSL Hello health checks are available:
• sslh—SSL Hello version 2 health check.
• sslhv3—SSL Hello version 3 health check.
WAP Gateway Health Checks
The Wireless Application Protocol (WAP) is a specification for wireless devices that uses TCP/IP and
HTTP as part of a standards-based implementation. The translation from HTTP/HTML to WAP/WML
(Wireless Markup Language) is implemented by servers known as WAP gateways on the land-based
part of the network.
Wireless Session Protocol (WSP) is used within the WAP suite to manage sessions between wireless
devices and WAP content servers or WAP gateways. Alteon includes a content-based health check
mechanism where customized WSP packets are sent to the WAP gateways, and Alteon verifies the
expected response.
Alteon supports WAP health checks for all 4 transport types: secure and non-secure connection-less
transport, secure and non-secure connection-oriented transport, as detailed in Table 45:
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