Information
The Cisco WS-X4K-CLOCK is a clock module designed for use in Cisco Catalyst 4500 Series switches. It provides accurate timekeeping and synchronization capabilities for the switch. The clock module is hot-swappable, meaning it can be inserted or removed from the switch without powering down the system. It is typically used in network environments where precise time synchronization is required for various applications and services.
Specifications
Product Type
Clock module
Compatibility
Cisco Catalyst 4500 Series switches
Hot Swappable
Yes
Field Replaceable
Yes
Redundancy Support
Yes
Supported Clock Modes
- Internal
- External
- Line
- T1
- E1
Clock Source Selection
Automatic or manual
Supported Clock Sources
- Internal oscillator
- BITS (Building Integrated Timing Supply)
- SSU (Synchronization Supply Unit)
- BITS + SSU
- BITS + 1+1 protection
- BITS + SSU + 1+1 protection
Clock Source Quality Level
Stratum 3 or better
Clock Source Synchronization
Yes
Clock Source Quality Monitoring
Yes
Clock Source Synchronization Jitter
Less than 1 microsecond
Clock Source Synchronization Accuracy
Within 1 microsecond
Clock Source Synchronization Holdover
Yes
Clock Source Synchronization Protocols
- Network Time Protocol (NTP)
- Simple Network Time Protocol (SNTP)
- Precision Time Protocol (PTP)
- Time of Day (ToD)
Clock Source Synchronization Redundancy
Yes
Clock Source Synchronization Failover Time
Less than 1 second
