Saturday , October 23 2021

from Huawei CLI – output modifiers

I decided to spend my vacation without access to internet, only wife, children, beach and windsurfing. I succeeded, September 3rd was the first day, after 3 weeks of my vacation, when I opened my mail box. Sorry for the delay in replying for your emails.

Last time I was asked about a procedure how to upload files through console port. The procedure is simple and I will try to show it in this post. Taking Huawei’s S3300 switch as an example I will show you how to upload file through console port, upgrading bootrom at the same time. Notice that uploading files by console is very slow and it is better to use it only for small files, unless you do not have any other choice.

Please use HyperTerminal to upload files by console port.

Power on the switch and enter into bootrom mode by pressing CTRL+B (default password huawei):

BIOS LOADING ...

Copyright (c) 2008-2010 HUAWEI TECH CO., LTD.
(Ver329, Aug 17 2010, 02:01:19)
Press Ctrl+B to enter BOOTROM menu ... 2
password:

BOOTROM  MENU

1. Boot with default mode
2. Enter serial submenu
3. Enter startup submenu
4. Enter ethernet submenu
5. Enter filesystem submenu
6. Modify BOOTROM password
7. Reboot
Enter your choice(1-7): 2

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OSPF troubleshooting – neighbour relationship

Huawei NE40E OSPF basic configuration:
#ospf 1 router-id 1.1.1.1
 area 0.0.0.0
  authentication-mode simple plain labnario
  network 10.0.0.0 0.0.0.3
  network 1.1.1.1 0.0.0.0
#
How to display OSPF neighbour:
[NE40E-1]display ospf peer

         OSPF Process 1 with Router ID 1.1.1.1
                 Neighbors

 Area 0.0.0.0 interface 10.0.0.1(GigabitEthernet3/0/0)'s neighbors
 Router ID: 2.2.2.2          Address: 10.0.0.2
   State: Full  Mode:Nbr is  Master  Priority: 1
   DR: 10.0.0.2  BDR: 10.0.0.1  MTU: 0
   Dead timer due in 34  sec
   Retrans timer interval: 5
   Neighbor is up for 00:33:07
   Authentication Sequence: [ 0 ]

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traffic policy on Huawei router

That was to be expected. Poland is out of Euro Cup. The only thing we can do is to come back to the real world :).

Today I will show you how to use ACLs and traffic policies for packets’ lost troubleshooting in a network.

Huawei ACL and traffic policy configuration

Let’s assume that we have such topology:

What we have to do is to check end-to-end connectivity between CE and R2 Loopback100 interface, to find where packets are being lost.

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screen length of terminal

24 – the default number of lines on one screen

<NE40E> display current-configuration
#
 sysname NE40E
#
 super password level 1 simple huawei1
 super password level 3 simple huawei
 super password level 15 simple labnario
#
 FTP server enable
 FTP acl 2000
#
 info-center source BFD channel 1 log level informational
 info-center loghost source GigabitEthernet0/0/0
 info-center loghost 172.16.20.90 facility local4
#
 vlan batch 31 to 32 98 100
#
 hotkey CTRL_U "display ip interface brief"
#
 undo cluster enable
#
snmp-agent trap type base-trap
#
 load-balance ip-enhance all
  ---- More ----

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OSPF packets

As you probably know there are five types of OSFP packets:

All these packets, except Hellos, are sent only between adjacent routers.

LSA types

There are 5 common LSA types:

  • Router-LSA and Network-LSA calculate intra-area routes describing detailed link state information.
  • Network-Summary-LSA calculates inter-area routes describing brief routing information instead of link state information
  • ASBR-Summary-LSA describes how to reach ASBR
  • AS-External-LSA describes how to reach destinations outside AS.

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