cli
---

+ ip tcp_metrics show
10.9.9.2 age 12.168sec ssthresh 34 cwnd 39 rtt 26324us rttvar 15418us source 10.9.9.1


srv
---

+ ip tcp_metrics show
10.9.9.1 age 12.175sec cwnd 10 rtt 25755us rttvar 15998us 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 5505912 bytes 82764 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc pfifo 804b: parent 1:1 limit 50p
 Sent 5505912 bytes 82764 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc ingress ffff: parent ffff:fff1 ---------------- 
 Sent 248289296 bytes 165782 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 804b: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 5505912 bytes 82764 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 82764 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755


+ 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 250364878 bytes 165619 pkt (dropped 163, overlimits 164324 requeues 0) 
 backlog 0b 0p requeues 0
qdisc pfifo 804c: parent 1:1 limit 50p
 Sent 250364878 bytes 165619 pkt (dropped 163, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc ingress ffff: parent ffff:fff1 ---------------- 
 Sent 4347216 bytes 82764 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 804c: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 250364878 bytes 165619 pkt (dropped 163, overlimits 164324 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 165619 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755


+ tc-l4s -s -d qdisc show dev ifb4mid.l
qdisc netem 1: root refcnt 2 limit 1000000 delay 10.0ms
 Sent 250610524 bytes 165786 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 5506192 bytes 82768 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0

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