CCIE: QoS
Hold-Queue & Hardware TX Ring: TX-Ring DEFAULT on 1841 (128) packets on a FastEthernet interface “tx-ring-limit X” verify with “sh controller fa 0/1 | in tx” FIFO Ingress queue is 75 packets by default and 40 packets on an 1841 FastEthernet interface “hold-queue X in|out” verify with “sh interface fa0/1 | in queue” Keep in mind that the software queue is only invoked when the hardware (TX-RING/FIFO) is full. CPU/packet spikes can tie up CPU cycles causing the router to use…