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6 views

What input misconfigurations exist in switch or router in Software Defined Network (SDN) based environment? [on hold]

I am looking for input misconfigurations that exist in switch /router in SDN based platform.
0
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0answers
8 views

What are the differences between the Optical Carrier (OC) and Synchronous Transport Mode (STM) transport protocols, in regards to SONET/SDH?

I understand that OC-3 and STM-1 are technically consistent, and STM-1 can transport different quantities of CEPT-N signals, but why not just use OC-3 and forget STM altogether?
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0answers
7 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 ...
0
votes
1answer
18 views

why do I need the network name between two routers for RIP routing?

the network in my exercise I am learning about networks and I just started to learn about dynamic routing(like RIP) but there is something I didn't managed to understand and is why do I need in the "...
0
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0answers
10 views

occasional loss of internet [on hold]

I have been trying to troubleshoot an issue with my home internet dropping occasionally over the past few months. I recently replaced both my router and my modem so I doubt there is hardware failure ...
0
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0answers
11 views

Will my router act as a DNS server? [on hold]

I tracerouted both my router's IP as well as my DNS server's IP even though they had different IP, I got the same results.
0
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2answers
32 views

Meaningless bits in CIDR notation

Is specifying meaningless bits valid syntax in CIDR notation? For instance, the netmask of 192.168.13.0/16 is 255.255.0.0. In this case, the last two octets (00001101 00000000) are meaningless because ...
0
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0answers
24 views

Cisco 1841 stuck on boot?

I found an old Cisco 1841 router and decided to boot it up to play with it a little. Everything seemed to be going ok but I guess something interrupted the boot. Last line is %SYS-6-...
0
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0answers
16 views

MDNS response “storm” with “localhost_prl: 127.0.0.1” [on hold]

We are experiencing occasional performance problems in our WIFI. With Wireshark I see a high number (currently 50/s) of MDNS responses for localhost_prl:127.0.0.1. I don't think that this is normal. ...
0
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0answers
19 views

How to determine root-cause of network latency and disconnections [on hold]

I am connected to internet through ADSL. It happens frequently that i see very sharp latency in internet speed and even sometimes i am not able to browse. When calling the ISP they confirm they do not ...
0
votes
1answer
12 views

Why does yealink ip phone is not getting ip address from voice vlan?

I have configured separate vlan for voip and connected interface to it (as shown below). But the phone is not getting ip address automatically. switch- cisco 2960-x phone- yealink I had tried: (on ...
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0answers
29 views

Restrict access from others [on hold]

Currently, I join into a house-group, that contained many users. I am provided a network cable that I can't know/change any settings. The diagram is as the attachment. The questions is : May I ...
0
votes
1answer
24 views

the use cases of network function virtualization infrastructure?

I did some search about this question but couldn't clarify. according to this post, I guess the NFVi can be used to run the virtual machine of switch, router, firewall, load-balancer and more for ...
0
votes
1answer
18 views

ping works but tracert reaches the max hop [on hold]

I have 4 guests in my VMware host, all of them work as expected; but if I use tracert to find out the route they take to reach the external site, all of them will reach the max 30 hops after the first ...
2
votes
1answer
158 views

How are packets handled and prioritized over a link with multiple VLANS?

So, the question is this. I have a Cisco router with multiple VLANS assigned to a single Gigabit port. 100,200,300, etc. as well as the normal connection without any vlan tagging. Now, everything ...
0
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0answers
9 views

DHCP & DNS: Hostname Resolution [on hold]

Just making sure that I understand correctly, When a new node on the network joins the LAN, it sends the DHCP server its hostname, and after the DHCP server acknowledges the requested hostname, the ...
0
votes
0answers
9 views

How does track packet movement on the internet? [on hold]

Just wondering how do website analysis tools track the path through which the packet is moving in the internet? I understand that internet to accomplish that, one needs to know the routers that are ...
0
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0answers
15 views

Reset SNMP process on Cisco WLC

Is there any way to reset/restart the SNMP process on a Cisco WLC? Just like for instance you can do it on Juniper switches from the cli (or on Cisco switches and routers for that matter as well, just ...
1
vote
1answer
32 views

Cisco 3750G - SSH Diffie Hellman Group 1 SHA1 Error

I recently implemented SSH configuration on my 3750G switch stack. I have -set the domain name -generated the rsa key using 2048 bits -ensured that the vty lines are set to transport input ssh Now ...
0
votes
2answers
35 views

SFP modules and LC-to-LC patch panels?

Simply put, we are joining two sites that are 200m apart using 8 core OM4 Multimode fibre cable. Am I correct in understanding that lc patch panels on either end of the fibre cable are ok and that ...
0
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0answers
20 views

Why is Prime 3.4 connecting to scan-prd-2007.cisco.com

Our Prime 3.4 Server is trying to connect to scan-prd-2007.cisco.com. Does anybody know what Cisco is doing here? scan-prd-2007.cisco.com (173.37.249.87) TCP/1541
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0answers
13 views

Connect Brocade icx-7450 COM with laptop

I have brocade icx-7450 managed switch and need to configure it with packetfence server. Still I'm not able to connect to the switch. Tried with mini USB to USB, RJ45 and USB male-male cables.
0
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0answers
19 views

Cisco Prime - Enlarge dashlet

Is there a way to make a part of overview window (dashlet?) in Prime Infrastructure larger? I have Network Topology as a part of the overview and I want to make that window bigger - seeing the network ...
0
votes
0answers
16 views

SFP+ Transceiver Compatibility [on hold]

We recently got a tvs-1582tu NAS with 2 SFP+ 10G connections. It will be used for a high throughput application, and copper connections will be enough. SFP+ is a new concept for me, and I see from ...
0
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0answers
9 views

Software to export switch config & upload to a documentation platform [on hold]

I'm maybe trying to get a little creative here however I've been tasked by my manager to try and find some software that can scan our switches using SNMP and / or SSH and export the running config, ...
0
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0answers
16 views

Which WiFi 802.11b interference is more destructive? [on hold]

I am curious after using 'WiFi Analyser' App on Android phone. The App shows various AP's that are in the range of your cell phone over the Wireless LAN. It shows APs SS-IDs , their channel number ...
0
votes
1answer
21 views

Windows Domain Controller making ARP requests outside of subnet? [on hold]

I have a Windows Server 2012 R2 box acting as a Domain Controller which is on a segregated LAN. It also acts as the DNS server for this LAN. I also have a Sonicwall NSA 2600 firewall which is set as ...
0
votes
0answers
6 views

What is SSH v2 and how data is encrypted between host to host [on hold]

What the role of RSA in SSH version 2 and it works
0
votes
0answers
18 views

ACL on a layer 3 router [on hold]

i have 2 vlans,2 routers and 1 HQ server.both my vlans are connected to one router while my HQ server is connected to the other router and the routers are both connected together.So for all my vlans ...
0
votes
0answers
8 views

Connecting win7 with winxp [on hold]

I have a network consisting of multiple computers running different windows versions from xp to 10 the problem is while the other computers running 7 and higher can see read and write on the computers ...
0
votes
2answers
55 views

Is Spanning Tree Protocol Needed?

If there are two switches connected directly together with two links is spanning tree protocol needed? please see below snippet
0
votes
0answers
13 views

Running UDP port 43210 [on hold]

I want to host Bombsquad game windows server. UDP port 43210 is not accesed. I did Settings in Router but still this does not work. I use supernet Infocomm Router.
0
votes
0answers
10 views

Bridging two NICs [on hold]

(I know next to nothing about networking, so bear with me.) I have a Linux board with two NICs. One will only be connected to another board, the other will connect to a network. I need to make the ...
0
votes
2answers
25 views

Wifi antenna to detect clients

I would like to know if it is technically possibile to detect and recognize a client (PC/smartphone) during its wifi scan. My goal is to get the list with identifiar like mac address or other unique ...
0
votes
0answers
17 views

Two switches don`t ping [on hold]

I have two switches each configured two vlans vlan2 and vlan3.Vlan2 has port 1 tagged in both switches ip address also in one mask192.168.0.1/24.Vlan3 has port 1 untagged in both switches and ip ...
0
votes
1answer
50 views

Why Internet protocol is divided in rows?

In simple words, why IP packet is divided in rows each one is 32 bit in length? For example this attached image shows the IP packet has 32 bit in the first row then another 32 bit and so on. Is it ...
1
vote
1answer
36 views

Broadcast link vs. point-to-point links

What is the distinction between broadcast links and point-to-point links? In the paragraph below, the author switches between "broadcast link" and "broadcast network" which is causing my confusion..is ...
0
votes
1answer
27 views

VLSM - Two Routers 4 Switches 2 Subnets 1 server

im looking to create two different subnets withing this setup, is that possible? But there are some pcs from switch 1 that are from subnet1 and others pcs from switch 1 that are from subnet 2 so ...
0
votes
0answers
8 views

Can I use sockets to create a chatbot website [on hold]

I want to create a Chatbot website that include the structure of distributed system. To be a distributed system, I thought there should be single server and multiple users concurrently accessing my ...
4
votes
1answer
131 views

What does NAT64 do which can't be done by deploying IPv6 + NAT444?

Why was NAT64 developed? What does it do that can't be done by deploying IPv6 + NAT444, and allocating your customers a (public) IPv6 and a (private) IPv4 address (behind a shared public IPv4 address)?...
0
votes
0answers
6 views

Connect two networks via openvpn, but not at router level, both servers are linux VM's [on hold]

I have two remote networks (windows computer mainly), call them network A and B. I have a linux vm running on network A (windows 10 host) and i'm thinking on setting up an openVPN server (call it ...
0
votes
1answer
36 views

Traceroute through ipsec tunnel

askk Hi when i do traceroute from host 192.168.11.0/24 to the server 10.0.0.0/24 which is site B when the packets get into the public area it show 'request timed out' as shown in this figure im using ...
0
votes
0answers
10 views

Intermittent Connection Problem between two Computers [on hold]

Hey guys I have an odd problem I'm trying to troubleshoot but can't figure out what's going on Setup: Computer A is on subnet 192.168.4.0 with ip 192.168.4.145 Computer B is on subnet 192.168.19.0 ...
0
votes
1answer
23 views

Is there a simple way to measure coaxial line loss to tell if i have a quality cable?

I want to test a couple 25ft 50ohm coaxial cables i purchased off ebay to see if the quality of them are any good, but I can't find any cheaper methods besides using something like a spectrum analyzer....
0
votes
0answers
8 views

How to capture all in coming packets live at open vswitch using mininet, pox controller programs [on hold]

I have modified the L3_learning program in pox controller and added code in "def _handle_openflow_PacketIn" function in the "if isinstance (packet.next,ipv4)" block. I am capturing the packet ...
0
votes
0answers
24 views

Why was the broadcast address changed from all zeros to all one's? [on hold]

I know, all zeros as broadcast address was used a long time ago as you've mentioned in some other answer. I wanted to know what was the reason that it was dropped and all ones was used as it's ...
1
vote
1answer
19 views

Cisco ASA failover monitor-interface policy

I have Cisco ASA 5585 and it has 10G interface in port channel where i configured multiple vlan sub-interface, is it worth to monitor every single sub-interface for failover policy or just monitor ...
0
votes
0answers
10 views

WatchGuard interface with secondary router holding WiFi splash page

I have a captive portal splash page I need to be presented to only 1 Open Wireless SSID on a WatchGuard AP controlled via the XTM330. The WatchGuard is not able to present the required splash page ...
-2
votes
0answers
23 views

Looking for large Cisco IPv4 IOS or ASA access-list examples [closed]

I've developed a MacOS Cisco IPv4 IOS/ASA GUI ACL analyzer. It handles small ACL samples fine but I've got a report that it fails with large ACLs (>10,000 lines in this particular bug report). ...
-1
votes
0answers
13 views

How to track and chose the path when source have two paths to reach same destination? [closed]

One source(Host) have two paths to reach destination where first path have 3 hops and second have 4 hops . Please tell me why and how source get to know which path have to follow ?(Asked this question ...

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