CNA Hosts can not reach each other through the switch

Latest reply: Jan 4, 2019 06:43:43 671 7 6 0

【Problem Description】


NA and VRM communication issue Through the Switch


 


VRM is 10.7.0.105 and one cna IS 10.7.0.115 FROM BOTH  ican ping the gateway and from the CNA i can ping the VRM but from the VRM i cannot ping the CNA


 


gateway is 10.7.0.1


 

CNA and VRM are insame network with gateway 10.7.0.1 subnet /24
【Problem Analysis】


102540ulx10by3xjj9j1zb.png


 


As my understanding from your description, the topology shouldbe like this that will be better understood, please help confirm whether it iscorrect or not?


 


And from your issue description, you cannot ping CNA 10.7.0.115from S5700-3, but can ping from S5700-1 10.7.0.1 and S5700-2 10.7.0.2, right?


If so, I want to know whether you can ping 10.7.0.111 or10.7.0.112 or others except 10.7.0.115 which also connecting E6000-1 fromS5700-3?


 


Also, as Mr. Mohamed descripted:


VRM is 10.7.0.105 and one CNA IS 10.7.0.115 FROM BOTH  Ican ping the gateway and from the CNA I can ping the VRM but from the VRM Icannot ping the CAN.


--- this should be like below, how about this? where is VRM? Anyrelated to your problem descripted that cannot ping from S5700-3?

102552lnlnluyw645nwz5f.png
【Root Cause】

in fact, this is just physical problem, the cable issue
【Solution Description】

after checked all the cables and ports again and the network issue is fixed

  • x
  • convention:

SupperRobin
Created Dec 29, 2018 03:23:13 Helpful(0) Helpful(0)

Calbe test
Virtual cable test (VCT) technology uses time domain reflectometry (TDR) to detect the cable status. When pulse signals are transmitted in a cable, some energy of the signals is reflected at the end or a failure point on the cable. This phenomenon is called TDR. The VCT algorithm measures the time spent on transmitting pulse signals over a cable, reaching the failure point, and returning the pulse signals. The measured time is converted into the distance.

As shown in Figure 1, GE1/0/1 of SwitchA is connected to GE1/0/2 of SwitchB using a network cable. A failure point exists on the network cable. After VCT is configured on GE1/0/1, the system generates pulse signals. When the pulse signals reach the failure point, some energy is reflected to the GE1/0/1. In this example, the distance between SwitchA and the failure point is L, the period from sending pulse signals to receiving reflected pulse signals is T, and the transmission rate of pulse signals in the cable is V. The following formula is used to calculate the distance between the failure point
  • x
  • convention:

Finn92
Created Dec 29, 2018 03:42:22 Helpful(0) Helpful(0)

【Root Cause】

in fact, this is just physical problem, the cable issue
【Solution Description】

after checked all the cables and ports again and the network issue is fixed

good example , learnt .
  • x
  • convention:

yjhd
Created Dec 29, 2018 05:41:39 Helpful(0) Helpful(0)

As my understanding from your description, the topology shouldbe like this that will be better understood, please help confirm whether it iscorrect or not?









And from your issue description, you cannot ping CNA 10.7.0.115from S5700-3, but can ping from S5700-1 10.7.0.1 and S5700-2 10.7.0.2, right?




If so, I want to know whether you can ping 10.7.0.111 or10.7.0.112 or others except 10.7.0.115 which also connecting E6000-1 fromS5700-3?
  • x
  • convention:

NoOneNoWhere
Admin Created Dec 29, 2018 07:02:33 Helpful(0) Helpful(0)

Cable issue. funny case.

But I think you spend too much time when troubleshooting this issue, I believe the first step is to check the physical connections and then to uper level .:))
  • x
  • convention:

littlestone
Created Dec 29, 2018 11:09:07 Helpful(0) Helpful(0)

VRM: Virtualization Resource Management Virtualization Resource Management Resource Management Function: Virtualization Management Software, together with UVP, constitutes a virtual infrastructure product. CNA: Computing Node Agen
  • x
  • convention:

w1
Created Dec 31, 2018 14:39:17 Helpful(0) Helpful(0)

Thanks for your sharing, even if the root cause is physical cable, but the troubleshooting and checking steps are very clear and useful, it can help us to check other issue, thanks again
  • x
  • convention:

zahra09
Created Jan 4, 2019 06:43:43 Helpful(0) Helpful(0)

Virtualization Resource Management Virtualization Resource Management Resource Management Function: Virtualization Management Software, together with UVP etc
i love your huawei forum
  • x
  • convention:

Reply

Reply
You need to log in to reply to the post Login | Register

Notice Notice: To protect the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but are not limited to the following:
  • Politically sensitive content
  • Content concerning pornography, gambling, and drug abuse
  • Content that may disclose or infringe upon others ' commercial secrets, intellectual properties, including trade marks, copyrights, and patents, and personal privacy
Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see " Privacy."
If the attachment button is not available, update the Adobe Flash Player to the latest version!
Login and enjoy all the member benefits

Login and enjoy all the member benefits

Login