Hi Guys
When I'm pinging router gi0/0 interface or hosts behind the router I get high ping drop rate (4-5%) depending on interface utilization.
Router CPU is at 30%, memory is fine, small amount (much smaller than noticeable packet loss) of input error overrun on interface gi0/0, no buffer misses. CEF and fast switching enabled on gi0/0.
Interface is receiving up to 130Mbit/s of traffic (up to 20.000 packets/sec), and PBR is enabled on the same (gi0/0) interface!!!
Only error that I see is rx_overflow_err counter increasing under the "sh controller gi0/0" command output:
Internal Driver Information:
throttled=15, enabled=15, disabled=0
rx_coalesce_failed=0, rx_framing_err=0, rx_overflow_err=225622, rx_buffer_err=494
rx_no_enp=0, rx_discard=0
tx_one_col_err=0, tx_more_col_err=0, tx_no_enp=0, tx_deferred_err=0
tx_underrun_err=0, tx_late_collision_err=0, tx_loss_carrier_err=0
tx_exc_collision_err=0, tx_buff_err=0, fatal_tx_err=0
Ring Buffer Information:
pq3_tsec_instance=0x1D28880
rx ring entries=256, tx ring entries=256
rxring=0x3DBAEDC0, rxr shadow=0x1D28D20, rx_head=130, rx_tail=0
txring=0x3DBAF600, txr shadow=0x14B0F8B4, tx_head=54, tx_tail=56, tx_count=2
Driver Level Counters: (Cumulative, Zeroed only at Reset)
Rx Frames=1215213944, Bytes=1546239146
Tx Frames=3056863727, Bytes=4126609038
tx_ring_limit_min = 64 tx_ring_limit_max = 256 tx_ring_limit_current = 256
What does rx_overflow_err mean and where this overflow is actually happening?
Thanks
Regards,
Darijo
