Interface packets discard.

bronx · Mon Jun 10, 2019 12:34 am

Hello guys,

N00b question here =)

I'm trying to understand when my router discards packets (e.g. the output interfaces cannot handle more traffic).

As you can see in the attachment, I was sending 25Mbps from ether1 inside the router, that was expected to be routed out on pppoe-dati (that it's attached on wlan1).

Unfortunately wlan1 can handle just ~10Mbps, and as you can see in the attached picture, the router is blackholing ~14Mbps of traffic.

I was expecting the counters rx/tx-drop to increase on one of the interfaces involved but nothing happened

.

Do someone know where are the counters that I'm looking for?

Thanks =)

Screenshot 2019-06-09 22.10.19.png

sebastia · Tue Jun 11, 2019 12:39 pm

Looks to me like traffic is going to pppoe-dait (internet?) from ether1 (lan?). Download probably. No drops. -> upload

sindy · Tue Jun 11, 2019 12:55 pm

Looks to me like traffic is going from pppoe-dait (internet?) to ether1 (lan?). Download probably. No drops.

As the OP says pppoe-dait uses wlan1 as transport interface, it doesn't seem plausible unless there was some mysteriously efficient compression. Is compression set to yes in the ppp profile?

sebastia · Tue Jun 11, 2019 2:12 pm

right. any queueing in place which limits the traffic?

Or just post your config: /export hide-sensitive compact...

bronx · Tue Jun 11, 2019 6:43 pm

No queue configured

It's simply the interface wlan1 that it's not able to dequeue from the interface queue as fast as pppoe-dati is fillling it

I will double check the configuration of the pppoe but I doubt that compression is enabled.

Just to be clear, my laptop was connected to ether1 and was generating traffic towards a destination reachable via pppoe-dati (that is attached to wlan1)

bronx · Wed Jun 12, 2019 12:08 am

No queues e no compression enabled

bronx · Thu Jun 13, 2019 12:31 am

Code: Select all


/interface ethernet

set [ find default-name=ether1 ] comment=""

/interface wireless

set [ find default-name=wlan1 ] adaptive-noise-immunity=ap-and-client-mode ampdu-priorities=0,1,2,3,4,5,6,7 band=5ghz-a/n \

    disabled=no ht-supported-mcs=\

    mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7,mcs-8,mcs-9,mcs-10,mcs-11,mcs-12,mcs-13,mcs-14,mcs-15\

    rate-set=configured ssid=yeah supported-rates-a/g=\

    6Mbps,9Mbps,12Mbps,18Mbps,24Mbps

/interface pppoe-client

add add-default-route=yes allow=pap disabled=no interface=wlan1 keepalive-timeout=60 max-mru=1450 max-mtu=1450 mrru=1614 \

    name=pppoe-dati use-peer-dns=yes user=user

/interface list

add exclude=dynamic name=discover

/interface wireless security-profiles

set [ find default=yes ] supplicant-identity=MikroTik

/ip ipsec proposal

set [ find default=yes ] enc-algorithms=3des

/ppp profile

set *0 use-compression=no use-encryption=no

/snmp community

set [ find default=yes ] addresses=0.0.0.0/0

add addresses=0.0.0.0/0 name=test security=authorized

/system logging action

set 0 memory-lines=100

set 1 disk-lines-per-file=100

/interface bridge settings

set use-ip-firewall=yes use-ip-firewall-for-pppoe=yes use-ip-firewall-for-vlan=yes

/ip neighbor discovery-settings

set discover-interface-list=discover

/ipv6 settings

set max-neighbor-entries=1024

/interface list member

add interface=ether1 list=discover

add interface=wlan1 list=discover

/interface wireless snooper

set receive-errors=yes

/ip address

add address=192.168.7.1/30 interface=ether1 network=192.168.7.0

/ip dns

set servers=10.5.0.1

/ip firewall nat

add action=masquerade chain=srcnat out-interface=pppoe-dati

/ip proxy

set cache-path=web-proxy1 parent-proxy=0.0.0.0

/ip route

add distance=1 dst-address=192.168.0.0/24 gateway=192.168.7.2

add distance=1 dst-address=192.168.3.0/24 gateway=192.168.7.2

add distance=1 dst-address=192.168.6.0/24 gateway=192.168.7.2

add distance=1 dst-address=192.168.10.0/24 gateway=192.168.7.2

/ipv6 dhcp-client

add interface=pppoe-dati pool-name=pool-ipv6-delegation request=prefix

/radius

add address=1.2.3.4 service=login

/snmp

set contact=Me enabled=yes location="" trap-community="" trap-target="" trap-version=3

/system clock

set time-zone-name=Europe/Rome

/system identity

set name="Cpe"

/system leds

set 0 interface=ether1 leds=user-led type=interface-activity

/system logging

add topics=wireless

/system ntp client

set enabled=yes primary-ntp=193.204.114.232 secondary-ntp=193.204.114.233

/tool graphing interface

add interface=ether1

add interface=pppoe-dati

/user aaa

set default-group=full use-radius=yes

bronx · Fri Jun 14, 2019 1:05 am

Any ideas?

bronx · Sun Jun 23, 2019 6:18 am

bronx · Sat Oct 05, 2019 12:07 am

This looks like a bug.

How can I report it?

Interface packets discard.

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