Cisco IOS XE IP SLAs HTTPS Operations Configuration Guide

Information About IP SLAs HTTPS Operations

The IP SLAs HTTPS operation is designed to monitor the round-trip time (RTT) between a Cisco device and an HTTPS server. This measurement helps administrators analyze server performance by retrieving web pages. The total RTT is calculated as the sum of the DNS lookup time and the HTTPS transaction time, which includes the SSL handshake, TCP connection, and the actual HTTPS request/response cycle.

Restrictions

• IP SLAs HTTP operations support only HTTP/1.0.
• HTTP/1.1 is not supported for any IP SLAs HTTP operation, including HTTP RAW requests.

How to Configure IP SLAs HTTP Operations

Configuring an HTTPS operation involves defining the operation on the source device. This process does not require an IP SLAs Responder on the destination server. Key steps include:

• Enable privileged EXEC mode: Use the enable command.
• Enter global configuration mode: Use configure terminal.
• Define the operation: Use ip sla operation-number followed by http secure {get | head} url to specify the target.
• Set frequency: Use frequency seconds to define how often the operation repeats (default and minimum is 60 seconds).
• Schedule the operation: Use ip sla schedule to define the life and start time of the operation.

Troubleshooting and Maintenance

If an operation fails to generate statistics, use the verify-data command within the IP SLA configuration mode to enable data integrity checks. For deeper analysis, utilize debug ip sla trace and debug ip sla error commands. By default, an operation is marked as down if the return code is not 200; however, you can use the http-status-code-ignore command to treat other status codes as successful.

Scheduling and Multioperation Groups

Operations can be scheduled individually or in groups. When using a multioperation group, all operations must share the same frequency. The list of operation IDs in a group is limited to 125 characters. Use show ip sla group schedule and show ip sla configuration to verify your settings and monitor the status of your configured SLAs.