Questions tagged [interface]
For questions about a physical or virtual interface on a network device. For instance: Interface configurations, troubleshooting and security.
191
questions
1
vote
1
answer
87
views
A question about WRED in QoS
I understand what WRED is and what goals it aims to achieve during congestion (drop packets, avoid Taildrop and so on).
However, the actual principle of it is quite confusing to me. Consider this ...
- 877
0
votes
2
answers
125
views
Interface is down/down but internet works
I am managing a network at my company. A patch panel provides connections to the switch, which is connected to the router.
One of the connections on the switch does not display a blinking green light. ...
1
vote
1
answer
80
views
Troubleshooting network issues; General inquiry
I work as a junior network admin at an ISP and I would like your help in resolving an issue whose cause is not readily apparent. Rn I am trying to troubleshoot a case where a switch interface randomly ...
0
votes
1
answer
882
views
Why Linux answers ARP requests for IPs that belong to different network interfaces? [closed]
My machine has a physical network interface (eno1) and a bunch of virtual network interfaces (e.g. tap0). Each interface has its own IP and their subnets do not overlap.
I noticed that if I perform an ...
- 103
0
votes
1
answer
595
views
Best Practices for Configuring Port Security on a Layer 2 Switch
How to configure port security on trunk and interfaces
I'm learning about port security and have a few questions. I have a layer 2 switch with interfaces f0/1-22 in access mode to access VLANs, ...
- 27
1
vote
1
answer
416
views
How To Get Text Wrapped Around In A Note Box In Cisco Packet Tracer?
I am new to Packet Tracer, and I am trying to refresh my CCNA knowledge. I downloaded and installed PT version 8.2.1 which is the latest version by today (04/23/2023). I have been using it for a while ...
- 285
1
vote
0
answers
49
views
What is "n6" in transparent architecture (NG-RAN)?
Hello everyone!
I study the NG-RAN logical architecture described in TS 38.401, baseline for NTN scenarios.
I have found the picture of transparent architecture, you see below. I can not find a ...
- 111
1
vote
2
answers
150
views
What issues can rise from web gui config changes then making other changes from the CLI?
I'm using a 9200L Cisco switch
If I make changes in the CLI, then I make changes in the Web interface and vice versa.
Will there be issues down the road with the config file getting corrupt or ...
- 131
2
votes
1
answer
647
views
Confusion between MDI and MII
Media Dependent Interface
Media Independent Interface
My understanding is 2. is an interface between PHY chip and MAC block on the board. PHY chip can be on the board, or detachable. It is rather PHY ...
- 125
0
votes
0
answers
11
views
How do devices on a network communicate when they are only connected through a router? [duplicate]
This is in my router's routing table:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 0 ...
1
vote
1
answer
509
views
Why specify the address of the default gateway in the routing table?
I’m struggling to understand the need of specifying the default gateway in the host’s routing table.
When a host is building a frame to be sent, it needs to specify two MAC addresses; one for the ...
- 155
1
vote
1
answer
96
views
Does the host need to access the routing table to know if the destination IP address exists in the same network?
It is said that, in the process of building a frame, the host checks if the destination IP address exists in the same network. My question is concerning how the host performs this check. Does the host ...
- 155
0
votes
2
answers
124
views
Where does a host save its IP address?
While building a particular packet to be sent across or outside the network, the host, at a certain point, needs to specify the MAC address of the interface through which the packet is going to be ...
- 155
0
votes
1
answer
250
views
Huawei S5700, forwarding incoming untagged packets to bridge-domain (Error: The port has added to VLAN 1)
Trying to forward incoming untagged packets from an AC port to a bridge-domain.
I'm following these guides:
https://support.huawei.com/enterprise/en/doc/EDOC1100086966
https://support.huawei.com/hedex/...
- 11
0
votes
1
answer
199
views
What’s the difference between Intel XXVDA2 and XXVAM2? [closed]
I have been looking at 25GBit NICs for SFP28 transceivers and came across the Intel XXV710 cards.
Since I couldn’t figure out the naming scheme of these NICs, I have no idea what the difference is ...
- 147