Monday , October 15 2018

GRE over IPSec on Huawei AR routers

If you want to recall how to configure GRE, just look at GRE on Huawei routers.

You can return to IPSec configuration, reading IPSec on Huawei AR router.

Today, I’m going to put them together and try to configure GRE over IPSec.

Based on the topology below, configure IP adresses and OSPF protocol to ensure connectivity between all routers (omitted here).

Configure tunnel interface on labnario_1 and labnario_3:

[labnario_1]interface Tunnel0/0/0
[labnario_1-Tunnel0/0/0] ip address 10.0.0.1 255.255.255.0 
[labnario_1-Tunnel0/0/0] tunnel-protocol gre
[labnario_1-Tunnel0/0/0] source 150.0.0.1
[labnario_1-Tunnel0/0/0] destination 160.0.0.1

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from Huawei CLI – fixdisk

I’ve had only one case when I used this command and … full success.

Sometimes it can happen that the file system doesn’t work properly. When you run dir command, you can find the space, which usage status is unknown. The system prompts you that the file system should be restored. Then you can run fixdisk command to release the unknown space.

Notice that:

  • It is not recommended to use it when the file system works correctly.
  • It doesn’t help when physical medium is damaged.
  • Do not use it when CPU usage is high.
Lost chains in flash detected, please use fixdisk to recover them!
<labnario>fixdisk flash:
Fixdisk flash: will take long time if needed
%Fixdisk flash: completed.

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Huawei eNSP – news

A new Huawei network simulator eNSP has been released.

You can download it clicking on the picture below:

huawei-enterprise-network-simulation-platform

Anyway, the first version of Huawei eNSP was introduced one year ago. I would like to know your opinions about the simulator. What is your experience with it? Is it helpful of useless for you? Feel free to express you thoughts.

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local PBR on Huawei AR routers

Some time ago I wrote about interface policy-based routing PBR. Today I will show you example of local PBR configuration on Huawei AR routers. Local PBR allows you to forward packets through different interfaces or to different hops. Unlike interface PBR, local PBR is used for locally generated packets and classifies packets based on source addresses or packet lengths.

Let’s look at the topology and configure as follows:

  1. Locally generated ICMP packets (with the size of 70-1300 bytes) will be sent to next hop IP address 172.16.0.2.
  2. Locally generated ICMP packets (with the size of 1301-1500 bytes) will be sent to outbound interface GE0/0/1.

Configure IP addresses and static routes to ensure connectivity between loopback interfaces of both routers:

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