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What is the default UDP port range of Traceroute on ONTAP?

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nas
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Applies to

ONTAP 9

Answer

33435~33626

Additional Information

Examine the port range on LAB.
  1. Start tcpdump log collection.
    ::> network tcpdump start -node node-01 -port e0c
    Info: Started tcpdump packet trace on interface "e0c"
     
  2. Start traceroute by ONTAP's default setting which has 64hops and each hop has three UDP sendings.
    ::> traceroute -node node-01 -destination 10.2.2.2
    traceroute to 10.2.2.2 (10.2.2.2), 64 hops max, 40 byte packets
    1  10.128.231.1 (10.128.231.1)  0.491 ms  0.316 ms  0.309 ms
    2  10.129.79.221 (10.129.79.221)  0.448 ms  0.670 ms  0.439 ms
    3  10.129.77.193 (10.129.77.193)  1.016 ms  1.357 ms
    10.129.77.194 (10.129.77.194)  0.857 ms
    4  10.133.128.106 (10.133.128.106)  121.045 ms  131.110 ms
    202.3.124.7 (202.3.124.7)  56.697 ms
    5  * * *
    6  * * *
    7  * * *
    ......snipped
    62  * * *
    63  * * *
    64  * * *
     
  3. Stop tcpdump log collection.
    ::>  network tcpdump stop -node node-01  -port e0c
    Info: Stopped tcpdump packet trace on interface "e0c"
     
  4. Collect the tcpdump via http(s)://<CLUSTER_MGMT_IP>/spi/<NODE_NAME>/etc/log/packet_traces/.
     
  5. Verify the destination port range is from 33435~33626.
    4180.0173752022-09-01 18:47:14.86340910.128.231.1605244110.2.2.233435UDP6252441 → 33435 Len=20
    4260.0002502022-09-01 18:47:14.86735710.128.231.1605244110.2.2.233436UDP6252441 → 33436 Len=20
    4280.0001122022-09-01 18:47:14.86766910.128.231.1605244110.2.2.233437UDP6252441 → 33437 Len=20
    ・・・・
    77740.1051422022-09-01 19:02:09.40947710.128.231.1605244110.2.2.233625UDP6252441 → 33625 Len=20
    78370.2483902022-09-01 19:02:14.42025510.128.231.1605244110.2.2.233626UDP6252441 → 33626 Len=20

 

 

 

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