Cisco 11503 Administration Guide - Page 163

Chapter 4 Using the CSS Logging Features Frequently Queried Log Messages Table 4-8 Cisco 11500 Series CSS Log Messages (continued) Log Message (sys.log: Subsystem Name, Level, and Message) FP_DRV-4: PrismImmFastPath::Send: Could not allocate an MCID. Remote message send aborted. (continued from previous page) Cause and Resolution In the case of software queues, it might be possible for some task on the MIPS processor to deplete the MCID pool by sending a large number of messages to a group that contains both local and remote members. If the local member has a very large queue, the queue could fill up before running the recipient task, processing the messages, and freeing the buffers. Of the two potential causes, the most likely causes is the CSS receiving a large number of packets which it must flood out all ports. This log message typically occurs when the CSS loses a specific route and forwards the flow out the default gateway. The default gateway then forwards the flow back to the CSS because the routing table lists the CSS as the next hop. As a result, the packet is continuously routed out the default gateway and back to the CSS. OL-5647-02 Cisco Content Services Switch Administration Guide 4-43