Tag Archives: Huawei CLI

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 ----

display this

Very useful and very often used command on Huawei’s devices. You can use it in any view. Any time you configure something, you can use it to check what you have configured. If you set parameters, that are the same with the default ones, these parameters will not be displayed. Anyway “display current-configuration” does not also show the default parameters.

Example 1 (interface view):

[NE-GigabitEthernet1/0/1]display this
#
interface GigabitEthernet1/0/1
 description test
 undo shutdown
 ip address 10.1.1.1 255.255.255.252
 isis enable 1
 isis circuit-type p2p
 isis circuit-level level-2
 isis cost 100
 isis bfd enable
 mpls
 mpls te
 mpls rsvp-te
 mpls rsvp-te hello
#
return

reset saved-configuration

If you need to reconfigure a Huawei device and do not want to delete its configuration line by line, it is the fastest way to restore the device to the default configuration. Reset saved-configuration command does not delete the existing configuration file in storage device. It is required to restart the device to activate changes. Before reboot, the device compares the configuration file to be loaded at the next startup and existing file to be deleted. Finally the device:

• loads the default configuration if both files are the same
• deletes the configuration file in use if they are different
• displays a message indicating that the configuration file does not exist if the configuration file to be deleted does not exist

<labnario> reset saved-configuration
The action will delete the saved configuration in the device.
The configuration will be erased to reconfigure. Continue? [Y/N]: y

Which configuration file is set as the “next startup saved-configuration file” you can check by the following command:

BFD process-interface-status and process-pst are applicable only for single-hop BFD. Let’s assume that we have two routers directly connected through interface GE1/0/0.

process-interface-status

By associating BFD session status with interface status we can trigger fast route convergence. We can use this function only for BFD session that uses a default multicast IP address to detect the single-hop link. We can use association between BFD session status and interface status in the case, when transport devices exist on the link between the routers. As the actual physical path is segmented by transport devices, the routers on both ends need a long time to detect a fault that occurred on the link. The change of BFD status affects the protocol status of the interface and thus fast convergence is triggered. When the BFD session becomes DOWN, the correspondence interface status also goes to BFD_DOWN state, causing that this direct route is deleted from the routing table but the router can still forward BFD packets.

[Labnario] bfd
[Labnario-bfd] quit
[Labnario] bfd test bind peer-ip default-ip interface gigabitethernet 1/0/0
[Labnario-bfd-session-test] discriminator local 1
[Labnario-bfd-session-test] discriminator remote 2
[Labnario-bfd-session-test] process-interface-status
[Labnario-bfd-session-test] commit

I have been describing Huawei datacom devices on my blog since July 2011. I started with some basic information about Huawei CLI, access methods and upgrade procedures. Then I showed you more advanced topics like PBR, DHCP etc. I am pleasantly surprised that this blog is visited by people from all continents, even from countries I have never heard about. As this blog is getting more and more popular I will do my best to publish more interesting posts.

As we went through a some stage, I have decided to prepare a cheat sheet describing Huawei CLI. You can download it as PDF, print and keep it :). I hope it will be useful for you.