7
votes
Accepted
How does the ARP table work in case of the Gateway Router?
You've got a misconception there:
Does ARP work this way in this case: 1-Host broadcasts an external IP address to the subnet asking who this is, 2- gateway router responds with its MAC, 3- For ...
- 16.1k
7
votes
Accepted
DCF and PCF in Wifi-networks
I am far from expert in this, however my belief is that the choice of DCF vs PCF is not strictly about ad-hoc vs infrastructure, but that PCF inherently can only work in infrastructure mode as there ...
- 16.1k
6
votes
Accepted
What is a "routable" IP?
What is a “routable” IP?
IP addresses can be divided into several categories.
Routable on the public Internet.
Routable on private networks but not on the public Internet
Not routable at all.
...
- 13k
6
votes
Assigning a single switchport to different VLANs
First of all an access port is by definition can only carry one Vlan.
Voice vlan is used, when if its actually a voice vlan traffic needed to be carried.
so lets say both vlans 232 and 233 are Data ...
- 61
5
votes
Accepted
Cisco port security static vs sticky+static
The difference is pretty straightforward.
switchport port-security mac-address sticky
Will convert all dynamically learned MAC addresses to sticky MAC addresses so that you don't have to statically ...
- 7,044
4
votes
Does one need to personally manage MLPS VPN connection to have MPLS between building or can the ISP provide this connection for you?
MPLS support is only rarely a requirement for enterprise equipment, especially relatively simple setups like the one you describe. MPLS itself is usually hidden away in the carrier networks. For your ...
- 2,439
4
votes
pfSense join 2 networks
Yes it is possible. You can do it by setting up a Static Route between your two gateways.
See the documentation here: https://doc.pfsense.org/index.php/Static_Routes
This is the same scenario as my ...
- 143
4
votes
Unbundling local loop
The term "local loop" comes from analog telephony. It is also called the "last mile." The definition is not precise, and certainly things like "access medium" were never imagined when the term was ...
- 66.9k
4
votes
How do I block IPs on my network?
You need to set up 802.1X, that way you can guarantee that users are strongly authenticated before accessing the company Wifi. Use RADIUS or if it's a small network you can get by with the built-in ...
- 2,249
4
votes
Deploying Virtual Stackwise Catalyst 9400
According to the documentation for Configuring Cisco StackWise Virtual
The SVL link needs to be connected to the sup-module.
StackWise Virtual Link (SVL) connections are established only through 10G ...
3
votes
Accepted
Ask users to register to gain access to Wi-Fi
This function is called "Captive Portal".
It basically works in the following way:
New user connects to AP
All traffic of this user (identified by IP or MAC) is redirected to the portal server and ...
- 558
3
votes
What is real difference between host and node in network
I think the short answer is that usage varies and is really a matter of emphasis.
RFC 1122 Requirements for internet hosts says "A host computer, or simply "host," is the ultimate consumer of ...
- 16.1k
3
votes
What is real difference between host and node in network
The easiest rule is to go by how much network stack is implemented.
A node is any device that is "active" in the network (=has a network port and is more than an electrical adapter); a node may have ...
- 81.5k
3
votes
Accepted
Multihomed Internet edge without BGP. Overlapping routes, a viable design?
Your thinking around the external BGP advertisements is sound, although as other have suggested, I'd highly recommend you run BGP with your providers for automated route-withdrawal on failure. ...
- 9,381
3
votes
What is your experience with Ruckus/Aruba W-Ffi products?
There are many wireless companies, many of which I have no experience. That said, I personally have never seen or heard of any Pakedge or Luxel wireless deployments.
There has been a lot of change ...
- 27.2k
3
votes
Accepted
Are ip:subnet combinations in ACLs different than everywhere else?
A /32 mask is often referred to as a host address, and it means a subnet with a single host. That is normal IP addressing and it works in ACLs or routing or anywhere else you use IP addresses.
One ...
- 66.9k
3
votes
Providing remote sites with Internet and Intranet using main office's resources
Your question is lacking quite a bit of detail before a specific answer can be crafted. A diagram of your current equipment setup would help.
Given your question is about how basic routing works and ...
- 181
3
votes
Accepted
How to force users to authenticate to get IP adress from DHCP?
There's a standard to achieve this: 802.1X.
Basically the switch request authentication from the computer, then contact an authentication server to validate the credentials and depending on the ...
- 19.4k
3
votes
Accepted
Unbundling local loop
when we are dealing with local loop we indicate the last mile of connection from the CABINET (or whatever else) to the subscriber.
At least in the UK it's the line from the telephone exchange to the ...
- 13k
3
votes
Access non-public IP computer
If your ISP routes packets but you have a dynamic IP address, perhaps all you need is any one of the dynamic DNS services, whereby your systems register the current address.
If the incoming packets ...
- 16.1k
3
votes
Accepted
Authorize IoT devices to connect to a WPA2 network without a password
In short, you can't.
One option is to create a separate WLAN (with a separate SSID) that has a static password. You should also apply strong filtering on that WLAN, so that the devices can reach ...
- 66.9k
3
votes
Network routing/WAN failover
The issue is where/what you're tracking. You need to be able to continue to steer traffic over the down route in order to tell when it comes back up. Using PBR for traffic sourced from the router (ip ...
- 993
3
votes
Accepted
What's the meaning of "3D Universal Edge Routers"?
3D Universal Edge Routers is Juniper Network's Series Product name. you can find more info in there.
3D means a physical, you can touch's product, it contrast to virtual product.
Universal means its ...
- 1,128
3
votes
Accepted
What is Open Radio Access Network?
A radio access network (RAN) is part of a mobile telecommunication system. It implements a radio access technology. Conceptually, it resides between a device such as a mobile phone, a computer, or any ...
- 3,098
3
votes
Accepted
Router Extended Access Control List
You can place an extended ACL where you want (as long as it is in the path of the packet you want to filter of course). However, depending on the filtering parameters, it is usually better to put it ...
- 871
3
votes
protection method that you need to know exact 3 or more ports to access network
The answer i was looking for is posted in comment by @Jesse P.
The method is called Port Knocking
- 41
3
votes
Accepted
How is P actually chosen in P-persistent CSMA?
So, this question actually asks two question:
how to find the optimal value of p.
given a value of p, how to set this value of p on any participating system.
For the first question: I would say that ...
- 1,798
3
votes
Accepted
No access to internet via DHCP, but works with manual IPs
Ok, maybe this was a silly mistake, but in the DHCP server settings there was a field called "router" that I didn't know what it was, so I left it blank and forgot about it. This was the &...
- 133
2
votes
Multihomed Internet edge without BGP. Overlapping routes, a viable design?
Regarding availability, depending on your SLA requirements, the manual failover from one ISP to another by calling the ISP and requesting the route be removed sounds like a procedure that would exceed ...
- 509
Only top scored, non community-wiki answers of a minimum length are eligible