Hello Engineers !
I have a trouble, please help me!
CRS3 router, on a interface constantly increase the log counter with input drops.
An ACL is set up on ingress traffic, but I can't understand that these drops are caused by this ACL
or the other issue like "Input drop invalid DMAC" ???
The "Input drop invalid DMAC" counter may be caused by ACL or is independently ?
some logs:
#show controllers tenGigE 0/3/0/3 stats
...................................................
Input drop overrun = 0
Input drop abort = 0
Input drop invalid VLAN = 522
Input drop invalid DMAC = 268246022 <-- this counter is permanently increasing
Input drop invalid encap = 535
Input drop other = 0
....................................................
#show inter tenGigE 0/3/0/3
TenGigE0/3/0/3 is up, line protocol is up
Interface state transitions: 73
Hardware is TenGigE, address is ccef.4806.5913 (bia ccef.4806.5913)
Description: -=..=-
Internet address is x.x.x.y/z
MTU 1514 bytes, BW 10000000 Kbit (Max: 10000000 Kbit)
reliability 255/255, txload 17/255, rxload 61/255
Encapsulation ARPA,
Full-duplex, 10000Mb/s, LR, link type is force-up
output flow control is off, input flow control is off
loopback not set,
ARP type ARPA, ARP timeout 04:00:00
Last input 00:00:00, output 00:00:00
Last clearing of "show interface" counters never
30 second input rate 2427523000 bits/sec, 268038 packets/sec
30 second output rate 678844000 bits/sec, 248055 packets/sec
5093582885272 packets input, 5130974626716135 bytes, 268269878 total input drops <-- constantly in progress ...
4542 drops for unrecognized upper-level protocol
Received 1085657977 broadcast packets, 4081267618 multicast packets
17 runts, 46 giants, 0 throttles, 0 parity
525 input errors, 429 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort <--- These counters are not changing
4258307831768 packets output, 1555089950242132 bytes, 52174 total output drops
Output 43284 broadcast packets, 53314 multicast packets
0 output errors, 0 underruns, 0 applique, 0 resets
0 output buffer failures, 0 output buffers swapped out
77 carrier transitions
............................................................................
interface TenGigE0/3/0/3
description -=:)=-
ipv4 address x.x.x.y 255.255.252.0
ipv6 nd suppress-ra
ipv6 address hhhh:hhhx::xhxh:xhxh:1/64
ipv6 enable
load-interval 30
flow ipv4 monitor sampler WANMONITOR ingress
ipv4 access-group FILTRU-IN ingress
.............................................................................
#show access-lists hardware ingress drop-count interface tenGigE 0/3/0/3 location 0/3/CPU0
Tue Dec 10 09:34:05.833 EET
Total acl drops : 1275068025 <-- very different from the total input drops
Thanks!