cli
---

+ ip tcp_metrics show
10.9.9.2 age 11.401sec ssthresh 13 cwnd 34 rtt 21702us rttvar 11949us source 10.9.9.1


srv
---

+ ip tcp_metrics show
10.9.9.1 age 11.405sec cwnd 10 rtt 20361us rttvar 11669us 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 5352240 bytes 80936 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc fq_codel 8051: parent 1:1 limit 10240p flows 1 quantum 1514 target 999us interval 20.0ms memory_limit 32Mb ecn 
 Sent 5352240 bytes 80936 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 241206268 bytes 161059 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 8051: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 5352240 bytes 80936 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 80936 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755

class fq_codel 8051:1 parent 8051: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 1264 count 0 lastcount 0 ldelay 1us
class fq_codel 8051:1 parent 8051: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 1264 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 243460506 bytes 161053 pkt (dropped 6, overlimits 156811 requeues 0) 
 backlog 0b 0p requeues 0
qdisc fq_codel 8052: parent 1:1 limit 10240p flows 1 quantum 1514 target 999us interval 20.0ms memory_limit 32Mb ecn 
 Sent 243460506 bytes 161053 pkt (dropped 6, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  maxpacket 1514 drop_overlimit 0 new_flow_count 1 ecn_mark 4486
  new_flows_len 0 old_flows_len 1
qdisc ingress ffff: parent ffff:fff1 ---------------- 
 Sent 4219136 bytes 80936 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 8052: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 243460506 bytes 161053 pkt (dropped 0, overlimits 156811 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 161053 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755

class fq_codel 8052:1 parent 8052: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 1292 count 22 lastcount 9 ldelay 1us
class fq_codel 8052:1 parent 8052: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 1292 count 22 lastcount 9 ldelay 1us

+ tc-l4s -s -d qdisc show dev ifb4mid.l
qdisc netem 1: root refcnt 2 limit 1000000 delay 10.0ms
 Sent 243461374 bytes 161063 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 5352520 bytes 80940 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0

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