Signaling Transport Options in GMPLS Networks: In-band or Out-of-band

—Signaling protocols for GMPLS networks have been standardized and implemented in switch controllers. Most switch vendors allow for signaling messages to be carried over inband signaling channels as well as through out-of-band networks. In this paper, we compare these two signaling transport options. In carrying out this analysis, we allow for both software-implemented signaling protocol processors, as is common in most offthe-shelf switches today, as well as hardware-accelerated signaling protocol engines. Our motivating application is file transfers, which have high call arrival rates and low call holding times. The resulting high signaling message load makes the question of which signaling transport solution to use important. Network delays are lower in the in-band option given that there are no IP routers on these paths, but the per-channel transmitter rates are lower for in-band channels. To study this tradeoff, we set up queueing models and obtained delay estimates. Our analysi...

• Type: Conference
• Year: 2007
• Where: ICCCN
• Authors: Malathi Veeraraghavan, Tao Li
• Keywords: ICCCN 2007, Signaling Message, Signaling Protocol, Signaling Protocol Processors