Saturday , November 18 2017

connection to ssh server by stelnet and sftp

Today I would like to focus on SSH application. What I want to do is to configure SSH connection between two switches, using password and RSA authentication:

  • Connection between stelnet client and SSH server
  • Connection between SFTP client and SSH server.

Let’s look at the simple SSH topology:

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from Huawei CLI – virtual-cable-test

My friend found an interesting command while he was searching Huawei S3700 documentation. It looks like it is possible to check (by command) a state of physical cable, connected to electrical Ethernet or GigabitEthernet interfaces. I have never used it but as soon as I get such switch I promise to test it.

Short description from Hedex:

  • When the checked cable is in normal state, the total length of the cable is displayed in the output information.
  • If the cable is abnormal, the distance between the interface and the faulty point is displayed.
[Quidway] interface Ethernet 0/0/1
[Quidway-Ethernet0/0/1] virtual-cable-test
Warning: The command will stop service for a while, Continue [Y/N]?y
Pair A length: 189meter(s)
Pair B length: 189meter(s)
Pair C length: 189meter(s)
Pair D length: 189meter(s)
Pair A state: Ok
Pair B state: Ok
Pair C state: Ok
Pair D state: Ok

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basic BGP in Huawei CLI

BGP stands for Border Gateway Protocol. It is widely used among Internet Service Providers to make core routing decisions on the Internet. The current BGP version is BGP-4 defined in RFC 4271.

BGP uses TCP port 179 as its underlying delivery mechanism to increase the reliability of the peer connection. BGP is called a path vector routing protocol. It uses a list of AS numbers through which the packet must pass in order to reach the destination. This list of AS numbers is associated with a BGP route and is called the AS_Path attribute. AS_Path is one of several path attributes associated with each BGP route. How does a BGP select best path to a destination network, you can read at how does BGP select routes.

I do not want to describe BGP in details, as this is out of the scope of this article. What I want to do is to show you, how to configure basic BGP features using Huawei CLI. Especially I want to show you how to:

  • run BGP protocol
  • configure IBGP peering sessions using peer groups
  • configure EBGP peering
  • advertise networks.

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Huawei certification once again

There is a new Huawei website that describes clearly Huawei certification track. Maybe some of you have already found it. For those, who are still looking for such information I am giving a direct link to official Huawei certification track.

I think this is useful news for those, who are interested in passing Huawei certification exams. It was not easy to find such information a few months ago.

It seems that Huawei started to treat its certification seriously.

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