Questions tagged [wan]

For questions about Wide Area Networks (WANs).

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31 views

Ping over WAN to LAN (and from server to hosts)

I have a network similar to the one shown at the picture below. The main aim is to get connectivity between antivirus server (10.100.10.9) and hosts placed behind their LAN-gateway (network 10.200.1....
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1answer
37 views

Differences between BGP(routing protocols) and vpn mpls?

I am new to networking, so bear with me, 1-I wanted to clear my query: why do we need BGP or any routing protocols if we have vpn or wan technologies like mpls ? 2-Can't we just run bgp between two ...
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0answers
44 views

Why is SD-WAN a more suitable option than MPLS for cloud? [closed]

I keep coming across the statement that because of the growth in cloud computing, SD-WAN is a more suitable option than MPLS for connecting remote sites. Can anyone give me an explanation why?
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2answers
108 views

Is the Internet essentially a network of routers?

Is the Internet nothing but a globally scattered interconnected routers, and that the connections between them could be via any of Leased Line, X.25, Frame Relay, ATM, MPLS, or Ethernet?
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2answers
97 views

How are X.25/Frame Relay/ATM/MPLS related to PSTN?

Do X.25/Frame Relay/ATM/MPLS have their own isolated physical infrastructure? Or are they technologies invented to utilize the then existing infrastructure of the PSTN?
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1answer
56 views

RV320 router between 2 access points and secondary VLAN [closed]

I have a Cisco RV320 that is sitting between 2 different routers/access points on my network. Essentially: My ISP's router/access point <-----> RV320 <-----> My other access point My ...
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2answers
69 views

Switch to secondary firewall when WAN interface goes down

We are having two firewalls A and B. The model is FortiGate 60E. Both are running in HA where A is primary and B is secondary. The firewalls are running smoothly and traffic is flowing from the WAN ...
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2answers
108 views

Pros and cons of using VPLS instead of using MPLS alone

What are the pros and cons of using VPLS instead of MPLS alone? What are the typical cases where VPLS is used?
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2answers
56 views

Applying WAN Changes to Juniper Chassis Cluster

I have a Juniper SRX 340 in a chassis cluster state. I am looking to change the WAN IPs used by the firewalls as the ISPs will change. I have GE interfaces that have sub interfaces within them 1,2,20,...
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1answer
43 views

Problem Forwarding Port 22 for SSH [closed]

I'm trying to forward port 22 so I can SSH into my PC from a different network but it doesn't seem to be working. I can do ssh mihkel@my_public_ip from the network that the PC is on but it doesn't ...
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2answers
340 views

What is a customer premise equipment when compared to DCE/DTE?

Usually, customer receive only a single device when they buy an Internet connection from an ISP. This device is connected to the ISP via fiber or a DSL line, has several Ethernet ports and provides ...
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2answers
773 views

How to connect multiple devices with identical static IP into a wireless network

I've been searching StackExchange and the Internet for a while looking for a solution for my networking question. Some articles I found are here, here and here, but these don't need to deal with a ...
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1answer
178 views

How can I accomplish VPN across Dual Wan connections?

How can I accomplish VPN across Dual Wan connections in a optimal way? Idea is to make: Site to site VPN. Make single connection inside the VPN to use full bandwidth of both wan connections using (...
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2answers
49 views

Why do all leaf nodes in an E-Tree service belong in the same subnet?

I'm studying the CCNA R&S at the moment and I'm a bit confused about why E-Tree services require all leaf nodes to belong in the same subnet, despite the leaves only being able to send layer 2 ...
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2answers
137 views

Addressing for a WAN, LAN and DMZ

I was wondering about the addressing for certain types of networking areas... I use 192.168.0.0 for a LAN network, 10.0.0.0 for a WAN and 172.16.0.0 for a DMZ. But I've been confused why a 10.0.0.0 ...
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1answer
55 views

Map of WAN cables in general [closed]

Whenever i search for the physical location and path of WAN connectivity, i only find submarine cables, and a site that seems like a paid service. Is there no free map where i can e.g. show the route ...
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4answers
287 views

WAN encapsulation

I am having some trouble understanding why does a WAN link need encapsulation, such as MPLS or frame relay? Is it merely to encrypt the info from one LAN to another LAN across the internet?
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1answer
115 views

Public and Private IPs

I wondered if someone could explain this to me. At work we have a firewall that connects to the Internet and has an external IP configured on it via DHCP. The firewall's WAN port connects to an ...
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2answers
590 views

Difference between WAN and VPN(tunnels)

I got my CCENT and working on ICND2 to get my CCNA. I am stuck on this topic and am unable to grasp the context. WAN and VPN and how they differentiate. My understanding is we need WAN for "Physical" ...
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1answer
43 views

CSU/DSU's and DSL modems

I read a few times that DSL modem isexample of CSU/DSU. To my understanding CSU/DSU connect digital communication method to digital while DSL modulate digital communication to analog. If so, how can ...
2
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1answer
385 views

packet-switching, circuit-switching, PVC and SVC

I am studying by this book: West, Jill. Network+ Guide to Networks.. [VitalSource]. What I understand from what is explained there is that there are two kind of virtual circuit technologies PVC and ...
2
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1answer
85 views

Wireless Controller 5520 Creating a dynamic interface

I'm hoping to determine the least intrusive way to configuring my WLC. I am working through the GUI interface and have created a new dynamic interface [Controller-> Interfaces] When I went to ...
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1answer
937 views

Access to a server behind the SonicWall from the LAN using Public IP addresses

We have a SonicWall TZ 400 with a Comcast Modem in Bridge Mode. Everything works fine, except the fact that the exposed services on the LAN couldn´t be reached using the public IP of the WAN from the ...
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1answer
208 views

WAN/Campus network design - Learning purposes

I am trying to build a WAN connecting various LAN's via frame-relay for learning purposes, i do not have that much experience with frame-relay or network design (mainly creating LAN's and connecting ...
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1answer
39 views

Super-noob asked to build a WAN [closed]

Worst case scenario here - software/sysadmin IT guy being asked to build a future proof WAN for 5-6 large sites over 50 mile radius. Must be end-to-end secure as will include personal and medical data....
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1answer
783 views

Load-balancing one VPN-connection over multiple WANs

My internet connection will be provided by 4 different WANs (each 250 Mbit down, 100 Mbit up), which should be load-balanced to one 1 Gbit connection (full duplex, most likely ethernet (should be ...
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1answer
151 views

Cisco 892 Low WAN Speeds [closed]

I'm getting really not-gigabit-close speeds on my Cisco 892 Router. LAN speeds are fine (750-800Mbps) but WAN speeds are awful. I have a PPPoE connection, and when doing a speedtest I get an average-...
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2answers
219 views

How does WAN work?

I understand the basics. WAN is a network that connects multiple LANs together. Usually the router is the connection between the LAN and WAN. But I have some questions books and the internet could not ...
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2answers
780 views

load balancing with multiple ISP, one router and asa 5520

I connected different two ISPs to the RV340 with dual WAN support. I want to connect the ISP - Router - ASA in the normal way, and connect the L2 Switch after the ASA. I need to know how to do DHCP ...
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1answer
738 views

Same subnet on two firewalls

I came across a network setup in this way: Cisco device provided by the ISP serving as a bridge between the fibre line and the LAN. Cable coming out from port eth0 of the Cisco above going to a ...
2
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1answer
349 views

Frame relay, PVC and DLCI

Regarding the frame relay technology, could you confirm to me that traffic using permanent virtual circuit use the same ISP routers in the path for all packets sent ? I'm a little bit confused. Frame ...
3
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2answers
161 views

Creating bandwidth with multiple WAN and LAN ports

I have a network with roughly 50 machines all on one LAN, consisting of Linux, Windows, and server machines. I have an untangled u150 firewall/router. I have the ability to add an additional WAN &...
2
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1answer
1k views

About BEST and MAX MTU with PPPOE + PPTP

About BEST and MAX MTU with PPPOE + PPTP in the router. I have Has been setup WAN to PPPOE and MTU is 1492, because 1464 is maxed on my ISP. and I have connected PPTP on the same router, and MTU is ...
3
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1answer
1k views

Connecting an SRX chassis cluster to redundant upstream WAN links

I've been tasked with migrating some Juniper SSG 140's in an active/passive cluster to an SRX 340 cluster. I'm very familiar with ScreenOS, but am still learning JunOS. Currently, we're connected to ...
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1answer
176 views

HSRP - 2 separate Virtual Router for Distribution and WAN?

I've got 2 Core-Multilayer-Switches connected with each other with two cables (trunks). They are also connected with the distribution-switches (and each switch is connected with both core-switches). ...
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3answers
2k views

Error Detection across OSI layers confusion

Confusion: How does the transmitter know that his information( bits in physical layer, frames in data link layer, packet in network layer ) was transmitted correctly to the receiver? I know that in ...
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1answer
335 views

SONET/T-Carrier differences - MPLS/VPLS bandwidth

Could someone explain to me simply what is the difference between SONET and T-Carrier? I know that the ISP generally uses SONET on their infrastructure (Ciscopress 2017, 1.2.1.2 section, http://www....
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1answer
680 views

What problem does Frame Relay or ATM solve that Ethernet does not?

Frame Relay is a technology that exists from 1988 (more or less). Ethernet is older (mid 70's). Why we classify as a WAN technology Frame Relay if Ethernet can do the same (and even better!)? As far ...
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1answer
225 views

Using an ASE(MPLS) line to route datacenter WAN traffic to office

im trying to route the Internet from our Datacenter to our Office over an AT&T ASE line (similar to an MPLS). At first I was going to just add the office subnets to the router in the datacenter ...
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1answer
379 views

WAN lines types - understanding leased line/circuit

Studying the WAN lines types, am I right regarding the statements below, or if not, could you correct me please: A real leased line, could be performed with TDM on a line with for example SDH, TDH or ...
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1answer
194 views

diff btw PTSN and DSL?

I have seen DSL compared to PTSN (public switched phone network). What are some of the major differences? Is there anything about this answer to a similar question [https://www.quora.com/What-is-...
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2answers
407 views

Set up Failover WAN with Double NAT (SonicWall)

I am trying to set up failover WAN on a SonicWall TZ300. My primary cable connection comes in via static IP (modem is bridged) to interface X1. My cellular backup is also a static IP to interface X2 (...
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1answer
79 views

Carrier Ethernet

On my courses slide there is a chapter about this concept. I thought it was some sort of idea about replacing legacy and non-flexible technologies as SONET and so on in favor of Ethernet family ...
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1answer
454 views

what is POOl in lease line i got 30 wan [duplicate]

Please help me Proposed IP Pool WAN/30 & LAN/29 what is the meaning how computers usable for this connection.this lease line connection optical fiber
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1answer
718 views

Unable to reach public IPs of servers behind ASA 5512

We replaced a Meraki MX with a Cisco ASA, and I'm unable to reach the public IPs of servers behind our firewall now. The server has working Internet access. All packet tracer runs show successful ...
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1answer
370 views

Unable to properly configure ASA 5512 with WAN IP

I have a /28 block of public IPs from Comcast. I'm trying to put a public IP directly on the ASA outside interface, but when I do I cannot ping 8.8.8.8 or the Comcast modem. Internal communication is ...
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1answer
186 views

WAN project requirements increasing

Okay so I was contracted to provide to design a new WAN topology for quite a large company in my country and designed them a fairly standard IPSec over DMVPN type design. So you can see the above ...
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1answer
134 views

Pass traffic to ASA from Spokes via Hub

Good afternoon, The network will be MPLS in the future and I am thinking about new design for it. We will have hub router with ASA behind and couple spokes without the need for IPsec (at least for ...
1
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1answer
648 views

vSRX : several public addresses on loopback interface

I have an issue when I try to configure several ip addresses on the loopback interface on a vSRX cluster. Here is my setup (in gns3) : vSRX-1 and 2 are in cluster mode. VyOS-1 and 2 are BGP routers ...
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1answer
3k views

Correct way to set up network with multiple routers/access points over fibre/ethernet [closed]

Heading Below is a network map for a network. Router 192.168.0.1 has DHCP enabled. Routers 0.2, 0.3, and 0.4 are connected via their LAN ports to router 0.1 by ethernet cable, and have DHCP disabled ...