cli
---

+ ip tcp_metrics show
10.9.9.2 age 16.891sec ssthresh 95 cwnd 123 rtt 82934us rttvar 44837us source 10.9.9.1


srv
---

+ ip tcp_metrics show
10.9.9.1 age 16.860sec cwnd 10 rtt 80553us rttvar 46330us source 10.9.9.2


mid
---

+ tc-l4s -s -d qdisc show dev mid.l
qdisc htb 1: root refcnt 2 r2q 10 default 0x1 direct_packets_stat 0 ver 3.17 direct_qlen 1000
 Sent 7558508 bytes 114314 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc fq_codel 8069: parent 1:1 limit 10240p flows 1 quantum 1514 target 3.0ms interval 40.0ms memory_limit 32Mb ecn 
 Sent 7558508 bytes 114314 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  maxpacket 722 drop_overlimit 0 new_flow_count 1 ecn_mark 0
  new_flows_len 0 old_flows_len 1
qdisc ingress ffff: parent ffff:fff1 ---------------- 
 Sent 338975752 bytes 226336 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0

+ tc-l4s -s -d class show dev mid.l
class htb 1:1 root leaf 8069: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 7558508 bytes 114314 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 114314 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755

class fq_codel 8069:1 parent 8069: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 894 count 0 lastcount 0 ldelay 1us
class fq_codel 8069:1 parent 8069: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 894 count 0 lastcount 0 ldelay 1us

+ tc-l4s -s -d qdisc show dev mid.r
qdisc htb 1: root refcnt 2 r2q 10 default 0x1 direct_packets_stat 0 ver 3.17 direct_qlen 1000
 Sent 342144456 bytes 226336 pkt (dropped 0, overlimits 188103 requeues 0) 
 backlog 0b 0p requeues 0
qdisc fq_codel 806a: parent 1:1 limit 10240p flows 1 quantum 1514 target 3.0ms interval 40.0ms memory_limit 32Mb ecn 
 Sent 342144456 bytes 226336 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  maxpacket 1514 drop_overlimit 0 new_flow_count 1 ecn_mark 128
  new_flows_len 0 old_flows_len 1
qdisc ingress ffff: parent ffff:fff1 ---------------- 
 Sent 5958112 bytes 114314 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0

+ tc-l4s -s -d class show dev mid.r
class htb 1:1 root leaf 806a: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 342144456 bytes 226336 pkt (dropped 0, overlimits 188103 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 226336 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755

class fq_codel 806a:1 parent 806a: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 1376 count 4 lastcount 1 ldelay 2us
class fq_codel 806a:1 parent 806a: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 1376 count 4 lastcount 1 ldelay 2us

+ tc-l4s -s -d qdisc show dev ifb4mid.l
qdisc netem 1: root refcnt 2 limit 1000000 delay 40.0ms
 Sent 342144806 bytes 226341 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0

+ tc-l4s -s -d class show dev ifb4mid.l

+ tc-l4s -s -d qdisc show dev ifb4mid.r
qdisc netem 1: root refcnt 2 limit 1000000 delay 40.0ms
 Sent 7558858 bytes 114319 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0

+ tc-l4s -s -d class show dev ifb4mid.r