All Questions
Tagged with switch networking
48
questions
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10
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Directing single subnet traffic via multiple VLANs [closed]
I have a setup where I would like to distribute devices connected to a L3 switch in multiple VLANs but I have a DHCP server offering a single subnet to the switch.
I'm attaching a network diagram ...
- 101
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17
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Resetting brocade vdx 6720 password to default without boot password
I want to reset a Brocade VDX 6720-24 switch that i got from ebay to default settings. It has a boot password. Extreme networks can not help with the recovery string because it is past end of life. Is ...
1
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1
answer
548
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How to block telnet access for one particular network from all networks except one using Extended ACL
Scenerio is given in the picture. I want to block all the networks except 192.168.5.128/25 from doing telnet of 192.168.5.0/25.
CommunityBot
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2
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3
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88
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Core Switches Redundancy Problem
I have network. I have three different networks and 2 vlans. PC0 is a member of vlan 10, PC1 is a member of vlan 20. One of the networks for vlan 10, another one is for vlan 20, third network is for ...
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-1
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1
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27
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VLSM Error on Cisco Distribution Switch [duplicate]
I have created 3 VLANS which should not overlap but somehow are giving me overlapping problems. Any reasons why? Is the switch buggy?
VLAN 10 10.1.1.0/28
255.255.255.240 Usable:10.1.1.0 to 10.1.1.15
...
- 67.8k
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81
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End to end delay over N link including the (simplified) propagation delay
It is well know (see this question) and easily verifiable that end-to-end delay in case of trasmission of P packets of size L over N equal links (same transmission rate R) with zero propagation delay ...
- 101
1
vote
2
answers
594
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Brocade 7450 - set MTU to 9000
I have brocade icx 7450.
I already enabled jumbo frames to increase MTU packets on switch.
But unfortunately I am not able to change MTU size of port which I want. When typing after choosing interface ...
- 13
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votes
1
answer
249
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input discards on Arista 7124SX-F
im seeing input discards on one of our uplink on Arista SW
if i run sh platform fm4000 interface ethernet 22 counters verbose command it is showing smp0DropPkts which is equal to the input discards.
...
CommunityBot
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6
votes
2
answers
3k
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Can a single subnet work across several switches?
New to networking and studying hard but limited access to a kit to try things at the moment...
My question is - if I had, for example, two Layer-2 switches cable connected, could I have devices on ...
- 85.8k
0
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1
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148
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Noob: i design a network for 156 computers/4 printers, need help in few things
Sorry if this stupid questions: I just learn networking like a week.
Lets say company xyz have 39 computers and 1 printer in each floor, there are 4 floors, total amount of computers is 156computers ...
CommunityBot
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1
vote
1
answer
208
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Configuring shared uplink on l3 dell s4128f-on
I have a Dell switch s4128f-on which I'm using as L3 core switch. What I want to achieve is creating multiple vlans and being able to reach other networks through an uplink.
What I've done so far is:
...
- 100k
1
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0
answers
83
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Port mirroring traffic on Hyper-V not showing Layer 3-7 traffic [closed]
We've been experiencing some issues with port mirroring that is used by a Network Intrusion detection system. Our company uses AlienVault as a SIEM and uses a Hyper-V sensor which is used to forward ...
- 11
1
vote
1
answer
4k
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How to reset a Default username and password of Allied Telesis AT9000/28 switch using CLI? [duplicate]
How to reset a Default username and password of Allied Telesis AT9000/28 switch using CLI?
- 85.8k
5
votes
1
answer
5k
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Does an unmanaged switch deal with IP addresses at all
My belief is that an unmanaged plug-and-play layer 2 network switch only deals with MAC addresses.
When computer A on a local network wants to communicate with computer B for example through the ...
- 85.8k
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22
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What is preamble in ethernet frame and why is it used? [duplicate]
I've searched all over the internet and every say that it synchronize the receiver clocks. What does that mean?
Also I've seen another definition that preamble gives NIC time to realize a frame is ...
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