I am having issues with Cisco 1000V routers getting lots of input errors. The error count below is from about 24 hours. There is OTV on this router, and the basic configuration is shown below. We have multiple CSR1000V's on this cluster, and the only one that isn't having issues is the one limited to 100M by license. Possible speed issue? Though the physical NICs on the host are 10Gb, and have plenty of spare bandwidth.
interface GigabitEthernet1
mtu 9000
ip address x.x.x.x 255.255.255.0
no ip redirects
speed 10000
no negotiation auto
arp timeout 1500
no mop enabled
no mop sysid
GigabitEthernet1 is up, line protocol is up
Hardware is CSR vNIC, address is
Internet address is x.x.x.x/24
MTU 9000 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 8/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full Duplex, 10000Mbps, link type is force-up, media type is Virtual
output flow-control is unsupported, input flow-control is unsupported
ARP type: ARPA, ARP Timeout 00:25:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 23:00:38
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 343088000 bits/sec, 29834 packets/sec
5 minute output rate 5852000 bits/sec, 6401 packets/sec
3759726133 packets input, 5367248957459 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
2678561 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
811394625 packets output, 93305869423 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
interface Overlay1
no ip address
otv join-interface GigabitEthernet1
no otv filter-fhrp
no otv suppress arp-nd
otv use-adjacency-server x.x.x.x x.x.x.x unicast-only
otv isis hello-multiplier 5
otv isis hello-interval 60
arp timeout 1500
no mop enabled
no mop sysid
service instance 501 ethernet
description XXX
encapsulation dot1q 501
shutdown
bridge-domain 501
!
service instance 506 ethernet
description XXX
encapsulation dot1q 506
shutdown
bridge-domain 506
(more service instances)
Smart Licensing is ENABLED
Registration:
Status: REGISTERED
Smart Account: XXX
Virtual Account: XXX
Export-Controlled Functionality: ALLOWED
Last Renewal Attempt: SUCCEEDED
Next Renewal Attempt: Jan 08 10:09:09 2023 EDT
License Authorization:
Status: AUTHORIZED
Last Communication Attempt: SUCCEEDED
Next Communication Attempt: Nov 09 10:09:16 2022 EDT
License Usage:
License Entitlement tag Count Status
-----------------------------------------------------------------------------
CSR 1KV APPX 2500M (appx_2500M) 1 AUTHORIZED
Underlying VMware instance
Vsphere 7.0.3
VMXNET3 NIC
Host has plenty of CPU and RAM
