cli
---

+ ip tcp_metrics show
10.9.9.2 age 14.600sec cwnd 162 rtt 81143us rttvar 55686us source 10.9.9.1


srv
---

+ ip tcp_metrics show
10.9.9.1 age 14.574sec cwnd 10 rtt 80162us rttvar 52467us 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 7279828 bytes 110098 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc fq_codel 806b: parent 1:1 limit 10240p flows 1 quantum 1514 target 999us interval 20.0ms memory_limit 32Mb ecn 
 Sent 7279828 bytes 110098 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 327025840 bytes 218368 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 806b: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 7279828 bytes 110098 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 110098 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755

class fq_codel 806b:1 parent 806b: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 998 count 0 lastcount 0 ldelay 2us
class fq_codel 806b:1 parent 806b: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 998 count 0 lastcount 0 ldelay 2us

+ 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 330082796 bytes 218366 pkt (dropped 2, overlimits 198991 requeues 0) 
 backlog 0b 0p requeues 0
qdisc fq_codel 806c: parent 1:1 limit 10240p flows 1 quantum 1514 target 999us interval 20.0ms memory_limit 32Mb ecn 
 Sent 330082796 bytes 218366 pkt (dropped 2, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  maxpacket 1514 drop_overlimit 0 new_flow_count 1 ecn_mark 2449
  new_flows_len 0 old_flows_len 1
qdisc ingress ffff: parent ffff:fff1 ---------------- 
 Sent 5738456 bytes 110098 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 806c: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 330082796 bytes 218366 pkt (dropped 0, overlimits 198991 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 218366 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755

class fq_codel 806c:1 parent 806c: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 998 count 27 lastcount 1 ldelay 2us
class fq_codel 806c:1 parent 806c: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 998 count 27 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 330083342 bytes 218373 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 7280178 bytes 110103 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0

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