cli
---

+ ip tcp_metrics show
10.9.9.2 age 12.120sec ssthresh 23 cwnd 36 rtt 22846us rttvar 12864us source 10.9.9.1


srv
---

+ ip tcp_metrics show
10.9.9.1 age 12.116sec cwnd 10 rtt 21184us rttvar 12284us 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 5519676 bytes 83470 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc fq_codel 804d: parent 1:1 limit 10240p flows 1 quantum 1514 target 5.0ms interval 100.0ms memory_limit 32Mb ecn 
 Sent 5519676 bytes 83470 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 248428768 bytes 165874 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 804d: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 5519676 bytes 83470 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 83470 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755

class fq_codel 804d:1 parent 804d: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 368 count 0 lastcount 0 ldelay 1us
class fq_codel 804d:1 parent 804d: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 368 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 250751004 bytes 165874 pkt (dropped 0, overlimits 164464 requeues 0) 
 backlog 0b 0p requeues 0
qdisc fq_codel 804e: parent 1:1 limit 10240p flows 1 quantum 1514 target 5.0ms interval 100.0ms memory_limit 32Mb ecn 
 Sent 250751004 bytes 165874 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  maxpacket 1514 drop_overlimit 0 new_flow_count 1 ecn_mark 117
  new_flows_len 0 old_flows_len 1
qdisc ingress ffff: parent ffff:fff1 ---------------- 
 Sent 4351096 bytes 83470 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 804e: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 250751004 bytes 165874 pkt (dropped 0, overlimits 164464 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 165874 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755

class fq_codel 804e:1 parent 804e: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 704 count 1 lastcount 1 ldelay 1us
class fq_codel 804e:1 parent 804e: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 704 count 1 lastcount 1 ldelay 1us

+ tc-l4s -s -d qdisc show dev ifb4mid.l
qdisc netem 1: root refcnt 2 limit 1000000 delay 10.0ms
 Sent 250751284 bytes 165878 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 10.0ms
 Sent 5519956 bytes 83474 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0

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