All Questions
9
questions
-1
votes
1
answer
27
views
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
...
0
votes
1
answer
144
views
Switch ping to router with trunk port
If I have a switch port trunk directly connect to a router with the follow scenario below:
-------- g1/0/1 (Trunk) g1/0/1 |------|
|switch| Native VLAN 1 SVI=...
- 103
1
vote
1
answer
348
views
Subnetting a network for VLANs
Real beginner here, struggling with my first real life network problem, existing kit, and almost no budget.
Two departments, which have to remain private from each other, are to be linked to main ...
- 11
8
votes
3
answers
56k
views
Why can't devices in different subnets talk with each other?
I know that the layer 2 doesn't understand IP, and the broadcast domain is same.
Why can't devices talk, how does it happen?
- 430
3
votes
1
answer
3k
views
What is the point of a subnet mask on a local network?
I have a question regarding subnet masks and my understanding (or misunderstanding of them).
So when a subnet mask is used, a bitwise AND is performed using the subnet mask and the IP address(es). ...
- 231
2
votes
1
answer
2k
views
How does Watchguard's Secondary Network work?
am a bit confused on how this "Secondary network IP address on a different subnet" work.
http://www.watchguard.com/help/docs/wsm/xtm_11/en-US/index.html#cshid=en-US/networksetup/second_net_config_c....
- 121
3
votes
2
answers
849
views
How to utilize multiple IP addresses from IP pool given by ISP
I'm still a student so please forgive me for my ignorance. I'm still learning. So I got a T1 line to practice and learn with and they gave me 5 IPs to play with. For example,8.8.8.0/29 8.8.8.[1-5]....
11
votes
2
answers
303
views
IPv6 Subnetting - Block RA on Switches?
I'm currently planning a v6 only small datacenter network.
Imagine for now one deployment consisting of 6 racks with 12 servers per rack.
Each server has 2 NICs for two physically separate networks (...
- 113
5
votes
3
answers
3k
views
Is a router always necessary to link two subnets?
I am thinking especially of VLANs, which represent separate subnets that may need only one switch.
- 1,071