here is the interface:
r1#
r1#
r1#show inter ser1 full
r1#show inter ser1 full
serial1 is up (since 00:00:01, 2 changes)
 description:
 type is serial, hwaddr=none, mtu=1500, bw=2000kbps, vrf=v1
 ip4 address=1.1.1.1/24, netmask=255.255.255.0, ifcid=10011
 ip6 address=1234::1/16, netmask=ffff::, ifcid=10011
 received 23 packets (2310 bytes) dropped 0 packets (0 bytes)
 transmitted 23 packets (2310 bytes) promisc=false macsec=false
 |~~~~~~~|~~~~~~|~~~~~~~~~|~~~~~~|~~~~~~|~~~~~~~~~|~~~~~~|
 | time  | send | receive | drop | send | receive | drop |
 |-------|------|---------|------|------|---------|------|
 | 1sec  | 1510 | 1510    | 0    | 15   | 15      | 0    |
 | 1min  | 0    | 0       | 0    | 0    | 0       | 0    |
 | 1hour | 0    | 0       | 0    | 0    | 0       | 0    |
 |_______|______|_________|______|______|_________|______|
 |~~~~~~~~|~~~~~~~|~~~~~~~~~|~~~~|~~~~|~~~~~~|~~~~~~|~~~~~~|~~~~~~|
 | type   | value | handler | tx | rx | drop | tx   | rx   | drop |
 |--------|-------|---------|----|----|------|------|------|------|
 | ethtyp | 0800  | ip4     | 10 | 10 | 0    | 940  | 940  | 0    |
 | ethtyp | 86dd  | ip6     | 13 | 13 | 0    | 1370 | 1370 | 0    |
 |________|_______|_________|____|____|______|______|______|______|
 |~~~~~~~|~~~~~~|~~~~~~|
 | proto | pack | byte |
 |-------|------|------|
 | 58    | 13   | 1370 |
 | 1     | 10   | 940  |
 |_______|______|______|
 |~~~~~~~~~~~~|~~~~|~~~~|~~~~~~|~~~~~~|~~~~~~|~~~~~~|
 | size       | tx | rx | drop | tx   | rx   | drop |
 |------------|----|----|------|------|------|------|
 | 0-255      | 23 | 23 | 0    | 2310 | 2310 | 0    |
 | 256-511    | 0  | 0  | 0    | 0    | 0    | 0    |
 | 512-767    | 0  | 0  | 0    | 0    | 0    | 0    |
 | 768-1023   | 0  | 0  | 0    | 0    | 0    | 0    |
 | 1024-1279  | 0  | 0  | 0    | 0    | 0    | 0    |
 | 1280-1535  | 0  | 0  | 0    | 0    | 0    | 0    |
 | 1536-1791  | 0  | 0  | 0    | 0    | 0    | 0    |
 | 1792-65535 | 0  | 0  | 0    | 0    | 0    | 0    |
 |____________|____|____|______|______|______|______|
 |~~~~~~~|~~~~~|~~~~~|~~~~~~|~~~~~~|~~~~~~|~~~~~~|
 | class | cos | exp | prec | cos  | exp  | prec |
 |-------|-----|-----|------|------|------|------|
 | 0     | 23  | 23  | 23   | 2310 | 2310 | 2310 |
 | 1     | 0   | 0   | 0    | 0    | 0    | 0    |
 | 2     | 0   | 0   | 0    | 0    | 0    | 0    |
 | 3     | 0   | 0   | 0    | 0    | 0    | 0    |
 | 4     | 0   | 0   | 0    | 0    | 0    | 0    |
 | 5     | 0   | 0   | 0    | 0    | 0    | 0    |
 | 6     | 0   | 0   | 0    | 0    | 0    | 0    |
 | 7     | 0   | 0   | 0    | 0    | 0    | 0    |
 |_______|_____|_____|______|______|______|______|
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        2416|##
           0|##
         bps|0---------10--------20--------30--------40--------50-------- seconds
           1|
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         bps|0---------10--------20--------30--------40--------50-------- minutes
           1|
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         bps|0---------10--------20--------30--------40--------50-------- hours
r1#
r1#