cli
---

+ ip tcp_metrics show
10.9.9.2 age 12.136sec ssthresh 28 cwnd 35 rtt 22957us rttvar 13147us source 10.9.9.1


srv
---

+ ip tcp_metrics show
10.9.9.1 age 12.136sec cwnd 10 rtt 20414us rttvar 11780us 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 5404606 bytes 81727 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc fq_codel 804f: parent 1:1 limit 10240p flows 1 quantum 1514 target 3.0ms interval 40.0ms memory_limit 32Mb ecn 
 Sent 5404606 bytes 81727 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 243276884 bytes 162439 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 804f: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 5404606 bytes 81727 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 81727 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755

class fq_codel 804f:1 parent 804f: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 374 count 0 lastcount 0 ldelay 1us
class fq_codel 804f:1 parent 804f: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 374 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 245550932 bytes 162438 pkt (dropped 1, overlimits 156667 requeues 0) 
 backlog 0b 0p requeues 0
qdisc fq_codel 8050: parent 1:1 limit 10240p flows 1 quantum 1514 target 3.0ms interval 40.0ms memory_limit 32Mb ecn 
 Sent 245550932 bytes 162438 pkt (dropped 1, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  maxpacket 1514 drop_overlimit 0 new_flow_count 1 ecn_mark 169
  new_flows_len 0 old_flows_len 1
qdisc ingress ffff: parent ffff:fff1 ---------------- 
 Sent 4260428 bytes 81727 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 8050: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 245550932 bytes 162438 pkt (dropped 0, overlimits 156667 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 162438 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755

class fq_codel 8050:1 parent 8050: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 186 count 1 lastcount 1 ldelay 1us
class fq_codel 8050:1 parent 8050: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 186 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 245551310 bytes 162443 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 5404886 bytes 81731 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0

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