What is the Cisco A9K-RSP-4G?
The Cisco A9K-RSP-4G is a controller module, listed by the manufacturer as "ASR9K Fabric, Controller 4G memory". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
The A9K-RSP-4G is a controller module manufactured by Cisco. Listed by the manufacturer as "ASR9K Fabric, Controller 4G memory", it is available through Circular Telecom's surplus and refurbished network equipment marketplace as a sustainable, tested alternative to buying new.
Common Questions
The Cisco A9K-RSP-4G is a controller module, listed by the manufacturer as "ASR9K Fabric, Controller 4G memory". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished Cisco network equipment, including parts such as the A9K-RSP-4G, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue