cli
---

+ ip tcp_metrics show
10.9.9.2 age 17.704sec ssthresh 164 cwnd 139 rtt 81351us rttvar 43521us source 10.9.9.1


srv
---

+ ip tcp_metrics show
10.9.9.1 age 17.667sec cwnd 10 rtt 80467us rttvar 46268us 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 7945646 bytes 120179 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc fq_codel 8067: parent 1:1 limit 10240p flows 1 quantum 1514 target 5.0ms interval 100.0ms memory_limit 32Mb ecn 
 Sent 7945646 bytes 120179 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 357541812 bytes 238711 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 8067: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 7945646 bytes 120179 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 120179 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755

class fq_codel 8067:1 parent 8067: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 1340 count 0 lastcount 0 ldelay 1us
class fq_codel 8067:1 parent 8067: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 1340 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 360883766 bytes 238711 pkt (dropped 0, overlimits 224558 requeues 0) 
 backlog 0b 0p requeues 0
qdisc fq_codel 8068: parent 1:1 limit 10240p flows 1 quantum 1514 target 5.0ms interval 100.0ms memory_limit 32Mb ecn 
 Sent 360883766 bytes 238711 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  maxpacket 1514 drop_overlimit 0 new_flow_count 1 ecn_mark 38
  new_flows_len 0 old_flows_len 1
qdisc ingress ffff: parent ffff:fff1 ---------------- 
 Sent 6263140 bytes 120179 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 8068: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 360883766 bytes 238711 pkt (dropped 0, overlimits 224558 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 238711 borrowed: 0 giants: 0
 tokens: 3755 ctokens: 3755

class fq_codel 8068:1 parent 8068: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 844 count 1 lastcount 1 ldelay 2us
class fq_codel 8068:1 parent 8068: 
 (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  deficit 844 count 1 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 360884116 bytes 238716 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 7945996 bytes 120184 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0

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