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Network Engineering : Recent Questions and Answers

Find answers to your questions about Network Engineering or help others by answering their Network Engineering questions.

Routers and layer 3 switches for connecting two buildings on site using fiber

I understand layer 3 switches are essentially routers, but often don't have the capabilities a router has, e.g. NAT. So I'm trying to work out where it would be necessary...

Asked on 11/25/2021

2 answer

What are usecases for IPv6 link-scope anycast?

IPv6 Neighbor Advertisement messages have a flag called Override, see RFC4861. It toggles, whether the receiver of the message should remove other link-layer addresses for the same...

Asked on 11/25/2021 by betanummeric

1 answer

Huawei switch mac address sticky (model S5720) persistence after power cycle

Suppose I configure the commands "port-security enable, port-security mac-address sticky" in a Huawei switch port, then an endpoint device is connected on the switch port, and a MAC address...

Asked on 11/22/2021 by Elias Bats

1 answer

Some mobile clients are unable to connect to UniFi AP mysteriously

We have two UniFi Controllers, one contains the main internet its directly connected to the fibre and then we give internet to the second controller using LAN connection, internet works...

Asked on 11/20/2021 by Saif Ali

1 answer

Standards for network design / installation diagramming in CAD

Ok, So I know this is a strange question and might be off-topic, but I really do not know where is the best place to ask it ( and where...

Asked on 11/19/2021

2 answer

Ping LAN via Anyconnect VPN

I'm trying to configure the VPN on a Cisco ASA 5510. I can connect to it without any problem and I can ping my switch ( but I can't ping...

Asked on 11/17/2021 by jrmybeaud

1 answer

Why can't we create a hierarchy of hubs?

I was reading the Comptia Network+ All in One book and I came to know that we cannot create a hierarchy of hubs. My question is why so? Are MDIX...

Asked on 09/30/2021 by ShayakSarkar

6 answer

can't send packets if the link is currently busy?

I'm new to networking sorry if my question sounds dumb, I was reading a textbook which says: the outbound link for the packet is the one that leads to router...

Asked on 09/30/2021

2 answer

How can i optimize this network

I got a router on a stick and I want to optimize it by reducing its cost and also the configuration costs This topology is to facilitate inter Vlan routing...

Asked on 09/30/2021 by Yoneakaski

2 answer

Why we define pool for declaring CISCO router DHCP?

In case declaring DHCP server in CISCO routers, should define pool with network addresses.↓ Example Router(config)#ip dhcp pool net1 Router(dhcp-config)#network The router has predefined interfaces ip address and...

Asked on 09/30/2021 by mgae2m

2 answer

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