Questions tagged [networking]

For questions about networking in general. Any question about all on topic network devices can use this tag.

21 questions with no upvoted or accepted answers
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Can I do Q-in-Q vlans between Dell and Cisco switch

Our Head Office is connected to our DR location between an L2 tunnel provided by our ISP. I need to establish a Q-in-Q setup between both sides to pass multiple VLANs through. Our head office has a ...
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0answers
68 views

Why can't i reach devices in the other network?

I have 2 networks and want to connect them with each other. It should be possible that all devices in network A can communicate with devices on network B and other way round. 1 network is "managed" by ...
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1answer
43 views

Which of TCP flags will use a timer, and what Timer will use?

When I study the TCP protocol life cycle, There are 3 stages: Establish Connection Data Transmission Connection Removal TCP have 6 Flag types: SYN, ACK, PSH, FIN, RST, URG. TCP has 4 Timer: ...
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22 views

How does direct sequence n-bit chipping code recover bit in the event of interference?

Say for example my data stream was 1010.Using 4-bit chipping code, with a random sequence of 0100101101011001. The XOR'd data which the receiver receives is 1011101110101001. I understand that ...
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0answers
215 views

Connecting GNS3 Topology to the Internet

I'm trying to connect my small topology to the internet through the Cloud device, but I'm not able to connect to even my own desktop's IP from the virtual router I have. I have Windows Defender rules ...
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1answer
127 views

what is the definition of out degree and in degree in computer networks?

in wikipedia we have a good definition for in degree and out degree in a graph: " The degree of a node is the number of connections or edges the node has to other nodes. in-degree is the number of ...
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0answers
41 views

The SNMP do not up the 161 port

I have a HUAWEI S5720 Switch(manage IP: 10.10.11.118), and I opened the snmp service of it: the configuration is: # ...
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0answers
203 views

Help with network setup issue (small network)

I am trying to set up a new network for a small business, and I can’t figure out what I have misconfigured. Hoping someone can provide me with some ideas. I have 6 VLANs set up. 10.10.10.0/24, 10....
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1answer
20 views

filling routing table with next hop addresses

in a multi hop network when the packet leaves the source is it loaded with all the ips of the stops on its journey, then at each hop it checks the bitmask with the nodes routing table to see if this ...
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2answers
55 views

Why cant i reach the other network while i have added the routes and firewall rules to allow traffic? (Pfsense/USG200)

I have 2 networks, the current one and the new one. The current one is not configured by me and one big mess and contains heavily out dated hardware (especially servers). I want to be able to access ...
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1answer
48 views

What steps must be accomplished in each layer of the TCP/IP model to connect a website?

What steps must be accomplished in each layer of the TCP/IP model to connect a website?
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13 views

How to understand the `Flow` and `Dynamic Flow` in networking?

In networking we also hear about Flow and Dynamic Flow. such as in there, there has the dynamic flow term. How to understand flow and dynamic flow? is there any difference between them? EDIT-01 ...
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1answer
69 views

How is the MD5 hash calculated in BGP?

The RFC is very superficial on the implementation details. What is the injective function being used? https://tools.ietf.org/html/rfc2385 MD5 digest is produced by applying the MD5 algorithm to ...
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20 views

Trying to establish stable connection, ping drops intermittent in PACKET TRACER

This was given by my friend and i cannot touch any of the configuration of the ISP router in the middle. but i have screenshots of routing table and interfaces. pinging the middle router from HOST A ...
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36 views

There have DHCP relay for different vlans issue in my MX-480 router

I have the network topology: in this topology, in my router, I set the DHCP relay: admin@MX-RE0# show forwarding-options dhcp-relay server-group { smart_group { 103.57.xxx.19; } } ...
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22 views

What is the difference between meters and queues in Openflow?

I'm new to OpenFlow and have just started studying Software Defined Networking. I have found a multiple websites mentioning that queues and meters are complementary to each other, and that they should ...
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25 views

CISCO Packet Tracer

Does Cisco Packet Tracer support config memory and config network command? If no, then do enterprise routers still support it?
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87 views

How to analysis the below situation, is the too many switch trunk connect caused this issue?

I have two Juniper EX switches, and the Juniper-EX-01(ge-0/1/1) connected to the Juniper-EX-02(ge-0/1/0). I want to check is there any optical attenuation problem, or other link errors. admin@...
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0answers
69 views

Set up multiple WAP4410N AP with same SSID

We are facing a WiFi connection issue in the prod environment at client place (a big hall, around 200ft x 150ft). Details: Environment: 4 Cisco WAP4410N Access points mounted on the pillars in the ...
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0answers
48 views

Why write a static route, it can communicative to each other in my scene?

I have a network topology like below: In Switch0, Switch1 and Switch2, I added the a SVI. However, it is not possible to reach from one SVI the other ones. Now, if I write the following static route ...
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1answer
86 views

Can not add a Physical port into LAG

Using SuperMicro network module, which related to Intel SDN product, the command PDF . and the Web GUI manual. there I have qe57, qe61, qe65, qe69 four upstream ports, I want to aggregate them to one ...