I'd like to check current traffic utilization (how much Mb/s is used per interface) on port on cisco switch and Juniper SRX device - any ideas where I can look up for this informations?
Thank you for all answers. mfx
2 Answers
For Cisco devices, you can type
show interface x/y
You'll get a response like this
Router>show interface tengigabit 0/0/0
TenGigabitEthernet0/0/0 is up, line protocol is up
Hardware is SPA-1X10GE-L-V2, address is 0000.0000.0000 (bia 0000.0000.0000)
Description: Sample Circuit
Internet address is 1.2.3.4/31
MTU 9178 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 9/255, rxload 11/255
Encapsulation ARPA, loopback not set
Keepalive not supported
Full Duplex, 10000Mbps, link type is force-up, media type is 10GBase-LR
output flow-control is on, input flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:29, output 00:00:04, output hang never
Last clearing of "show interface" counters never
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 456145000 bits/sec, 85866 packets/sec
5 minute output rate 356961000 bits/sec, 79293 packets/sec
405059988918 packets input, 267595313186384 bytes, 0 no buffer
Received 2 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
832 input errors, 677 CRC, 155 frame, 0 overrun, 0 ignored
0 watchdog, 3635928 multicast, 0 pause input
381317901828 packets output, 215556748770785 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
Router>
For simple utilization, txload and rxload will give you the answer (6th line down). The values are expressed as fractional utilization out of 255. So 0/255 is 0 load, 128/255 is 50% load and 255/255 is 100% load. In this case, 9/255 is a little over 3%. For actual byte counts, look at the 5 minute input and output rates. Although it should be obvious, it bears repeating that these numbers are 5 minute averages.
answered Jul 7, 2017 at 16:40
For Juniper devices you can use the monitor interface command, it shows an overview of all interface counters which is automatically updated:
user@host> monitor interface fe-0/0/0
host1 Seconds: 5 Time: 04:38:40
Delay: 3/0/10
Interface: fe-0/0/0, Enabled, Link is Up
Encapsulation: Ethernet, Speed: 1000mbps
Traffic statistics: Current delta
Input bytes: 885405423 (3248 bps) [2631]
Output bytes: 137411893 (3344 bps) [10243]
Input packets: 7155064 (2 pps) [28]
Output packets: 636071 (1 pps) [23]
Error statistics:
Input errors: 0 [0]
Input drops: 0 [0]
Input framing errors: 0 [0]
Policed discards: 0 [0]
L3 incompletes: 0 [0]
L2 channel errors: 0 [0]
L2 mismatch timeouts: 0 [0]
Carrier transitions: 1 [0]
Output errors: 0 [0]
Output drops: 0 [0]
Aged packets: 0 [0]
Active alarms : None
Active defects: None
Input MAC/Filter statistics:
Unicast packets 73083 [16]
Broadcast packets 3629058 [5]
Multicast packets 3511364 [3]
Oversized frames 0 [0]
Packet reject count 0 [0]
DA rejects 0 [0]
SA rejects 0 [0]
Output MAC/Filter Statistics:
Unicast packets 629555 [28]
Broadcast packets 6494 Multicast packet [0]
More details can be found in the JunOS documentation.
