This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>

Enterprise
Community Forums Switches
Use MPLS cannot access so...

Use MPLS cannot access some webpage

Latest reply: Oct 27, 2018 08:14:40 892 10 12 0
display all floors #1

[Problem Description] : Since your current problem is that access to some pages is not accessible.

[Problem Analysis] : MPLS is a based MAC Layer 2 forwarding. If the MPLS is affected, it should be that all web pages cannot be accessed normally. And your configuration is fine.

[Next Plan] : We need to capture the package for analysis


Configuration everything is normal, so you need to capture packets analysis

elow are the steps.

  1. Select a PC and directly connect to the switch,
  2. Below are commands on the switch(Please use a PC to perform the following operations separately)
  3. Open the inaccessible webpage using Wireshark on the PC, and then capture the packet. (If you have completed the following, please let us know and we will analyze these messages remotely.)

 

Capture 1：

observe-port interface  xxx(Port connected to the PC)

interface xge0/0/48   

port-mirroring to observe-port 1 outbound

 

ACL 4000

rule 5 permit source-mac X-X-X-X( PC’s mac address)

rule 10  permit  destination-mac  X-X-X-X( PC’s mac address)

 

traffic classifier c1 operator and

if match ACL 4000

 

traffic behavior b1

mirroring to observe-port 1

 

traffic policy p1

classifier c1 traffic b1

 

interface xge0/0/48

traffic policy p1 outbound/ inbound  (Need to capture packets in two directions separately)

Capture 2：

observe-port interface  xxx(Port connected to the PC)

interface xge0/0/4  

port-mirroring to observe-port 1 inbound

 

ACL 4000

rule 5 permit source-mac x-x-x-x( PC’s mac address)

rule 10  permit  destination-mac  X-X-X-X( PC’s mac address)

 

traffic classifier c1 operator and

if match ACL 4000

 

traffic behavior b1

mirroring to observe-port 1

 

 

traffic policy p1

classifier c1 traffic b1

 

interface xge0/0/48

traffic policy p1 outbound/ inbound(Need to capture packets in two directions separately)

Capture 3：

observe-port interface  xxx(Port connected to the PC)

interface xge0/0/1  

port-mirroring to observe-port 1 outbound/ inbound(Need to capture packets in two directions separately)

Capture 4：

observe-port interface  xxx(Port connected to the PC)

interface xge0/0/45

port-mirroring to observe-port 1  outbound/ inbound(Need to capture packets in two directions separately)



The conclusion is obtained through packet capture analysis, and the final problem is the export of third-party gateways.



  • x
  • convention：

Helpful (12) Favorite(0) Share Report
faysalji
Created Oct 23, 2018 03:23:23 Helpful(2) Helpful(2)

Thank You!
  • x
  • convention：
If you think my post/reply is useful, please click the Helpful button and flag my post as a BEST ANSWER. Thanks
garrysister
Created Oct 23, 2018 05:54:17 Helpful(0) Helpful(0)

Use MPLS cannot access some webpage-2783507-1好分享谢谢
  • x
  • convention：
SupperRobin
Created Oct 23, 2018 05:54:42 Helpful(0) Helpful(0)

When the command is configured, a P device does not need to be enabled with the MPLS L2VPN function.

After the mpls l2vpn command is executed:

    If MPLS L2VPN is disabled on the device, MPLS L2VPN is enabled and the MPLS L2VPN view is displayed.
    If MPLS L2VPN is enabled on the device, the MPLS L2VPN view is displayed. This post was last edited by SupperRobin at 2018-10-31 06:38.
  • x
  • convention：
Torrent
Created Oct 23, 2018 06:34:22 Helpful(0) Helpful(0)

this article is about MPLS , but you only show us how to do capture, can you also explain more about MPLS, what is it? I am very interesting about MPLS for we usually use it in our daily work.

anyway, thanks for sharing us the good example.
This post was last edited by Torrent at 2018-10-31 07:07.
  • x
  • convention：
GongXiaochuan
Created Oct 23, 2018 08:42:38 Helpful(0) Helpful(0)

is this only way for troubleshooting about the issue? and if can be explain how to analysis the capture files would be much better for us , thank you

This post was last edited by GongXiaochuan at 2018-10-31 06:09.
  • x
  • convention：
Good Good Study Day Day Up
littlestone
Created Oct 24, 2018 00:59:26 Helpful(0) Helpful(0)

This is a great article, I am interested in this article, which is very helpful for our daily troubleshooting. I always have similar problems in my daily work, but I don't know how to deal with them. Now I have a definite idea. Thank you very much for sharing. Hopefully you can update to continue like this
  • x
  • convention：
littlestone
Created Oct 24, 2018 01:00:14 Helpful(0) Helpful(0)

DEVM_1.3.6.1.4.1.2011.5.25.219.2.4.5 hwOpticalInvalid

If the preceding alarm is displayed, collect information about optical modules on the local and remote interfaces and configurations of the interfaces, and contact technical support personnel.

This post was last edited by littlestone at 2018-10-31 05:58.
  • x
  • convention：
wanglei259
Created Oct 27, 2018 07:33:55 Helpful(0) Helpful(0)

Thanks for your sharing ,which is a wonderful guidance, i really interested in this article, which is useful for us and improvement product technology and become to a professional engineer .
I hope that you can insist post new kownlege and skills, i will alawys keep an eye on your sharing.
  • x
  • convention：
Our kingdom is young,our stories are not yet legends.
No.9527
Created Oct 27, 2018 08:14:31 Helpful(0) Helpful(0)

On the S5720EI switch, if hardware support for MPLS is displayed as NO in the output of the display device capability command, the switch does not support MPLS. In this case, you need to pay attention to the following points:
  • MPLS cannot be enabled on the S5720EI switch. If the switch has been added to a stack, MPLS cannot be enabled on the stack.
  • The S5720EI switch cannot be added to a stack running MPLS.
This post was last edited by No.9527 at 2018-10-31 03:24.
  • x
  • convention：
12
Back to list

Comment

Reply
Advanced
B Color Image Link Quote Code Smilies
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
Huawei Website Support About Huawei Privacy Terms of Use
Huawei Enterprise Huawei Carrier Forum Training & Certification

Copyright © 2019 Huawei Technologies Co., Ltd. All rights reserved.

APP