51
votes
Accepted
Difference between control plane, data plane and management plane?
These terms are abstract logical concepts, much like the OSI model.
Data plane refers to all the functions and processes that forward packets/frames from one interface to another.
Control plane refers ...
- 66.9k
25
votes
Difference between control plane, data plane and management plane?
Forwarding Plane - Moves packets from input to output
Control Plane - Determines how packets should be forwarded
Management Plane - Methods of configuring the control plane (CLI,
SNMP, etc....
- 4,379
18
votes
Accepted
Can a switch that does NOT support VLAN capability be considered a managed switch if it has other features?
Yes. A managed switch is a switch you can configure in some way or other. Whether it supports VLANs or not is not the question. Even a switch (or a hub for that matter) that only provides status ...
- 81.6k
9
votes
Accepted
What exact does MIB represent in SNMP? How is it different from OID?
The MIB is the entire catalog of OIDs (for a particular device).
An OID is a specific reference to an individual item within the MIB.
An analogy: The MIB is like the phone book for my city. The OID ...
- 14.8k
7
votes
Can a switch that does NOT support VLAN capability be considered a managed switch if it has other features?
Yes, "manageable" obviously refers to the fact that you can manage the switch, rather than to one specific feature such as VLAN.
Among other things, some useful features such a switch could have:
...
- 19.4k
6
votes
Accepted
Can I run an application on a managed switch?
You are correct that switches run an OS (Cisco IOS, HP Comware...) however they do not normally expose any means for the end-user to write and deploy additional apps.
This is true even when the ...
- 2,439
6
votes
Accepted
How to manage the Ethernet switch that is on WAN?
There are a few options with different security risks. You will have to decide which one(s) meets your needs.
Use an out-of-band connection to the console port. This is probably the safest way, but ...
- 66.9k
6
votes
Difference between control plane, data plane and management plane?
1 --- Data Plane:
These are software or hardware components of the router or switch related to routing/forwarding user data/traffic from one interface to another. In the case of routers, routing ...
- 61
6
votes
Accepted
SNMP object not in the MIB
is it possible to add support for an OID that is not there by default?
Unfortunately, adding support for these OIDs would require each of your vendors (Brocade and Dell) to implement them in their ...
- 9,381
5
votes
Accepted
Is there a point to have VLANs if each PC client can access them all?
By themselves, VLANs do not offer any security. But you use them to implement layer 3 security.
Remember that VLANs are layer 2 concepts, while IP subnets are layer 3 concepts. In most cases, there ...
- 66.9k
5
votes
Accepted
Does Network Device Management VLAN Need To be On An Access Port Or Can It Travel In A Trunk?
A management VLAN is the same as any other VLAN, so yes, you can include it on your trunk ports. Just make sure the management interface is in the correct VLAN.
- 66.9k
5
votes
Accepted
what are the difficulties of configuring switches through SNMP?
Questions that generate mostly opinion-based answers are off limits here, so we can’t really talk about why someone should or shouldn’t do something like this.
As far as purely technical points go, if ...
- 4,690
4
votes
Can I run an application on a managed switch?
I think it depends what brand and what OS it is running.
Cisco devices run their own proprietary version of IOS, which as far as I know doesn't support custom applications.
Juniper, on the other ...
- 344
3
votes
Switch Configuration Security -- Signed Configurations
AAA configs on a network device can tell it to pass all authorisation checks back to an ACS / ISE / RADIUS server. The backend server can then send a message back to the device saying "Yes that person ...
- 690
3
votes
Regarding NETCONF
XR probably wants NETCONF 1.1. If you enable debugging you might find something like this in your log:
RP/0/RSP0/CPU0:Sep 8 09:47:27.513 : netconf[1120]: ERR: NC: Error, Capability urn:ietf:params:...
- 1,076
3
votes
Accepted
vlan management without assigning an interface to the vlan
Add VLAN 40 as a trunked/tagged VLAN on the uplink port of the switch.
This will make it active (since it has an active interface) and allow you to reach it in the first place if you are coming from ...
- 9,381
3
votes
DLink switch loses configuration on power off!
This has just happened to me with my Dlink DGS 3120-24SI.
Apparently you need to go to the web gui then select Save ... Save Configuration / Log.
Change Type to All, then Apply.
This saves everything ...
- 31
3
votes
DLink switch loses configuration on power off!
I have seen this behavior with D-Link's in the past, it is hit and miss with their switches. If I saved from the web GUI, it wouldn't actually save, but saving using the CLI seemed to have always ...
- 93
3
votes
Switches Can't Ping Each Other but PCs Can
You've made the classic mistake:
Different manufacturers use different terminology
HP calls them Trunks-- Cisco calls them Port channels
In other words, you're using the wrong commands
- 66.9k
3
votes
Switches Can't Ping Each Other but PCs Can
In HP jargon, trunking is port aggregation (LAG), unrelated to VLAN trunking. A LAG trunk with just a single port doesn't make much sense unless you're planning to extend it neatly. You should ...
- 81.6k
3
votes
Accepted
Nagios to monitor network in Cisco packet tracer
You can't.
Packet tracert is a closed simulator, which cannot be connected to anything outside of the program.
To do this you can use GNS3 (free - but require real Ciso IOS software images that are ...
- 19.4k
3
votes
Accepted
What is the easiest way to regain access to the Sonicwall configuration management after I have locked myself out by deactivating https management
If you have a config saved off-device that you could cut & paste in via console, you are able to replace your Sonicwall config with the backed-up config via Safe Mode. AFAIK you can NOT edit an ...
- 5,439
3
votes
Accepted
Log messages not leaving switch after changing source to management port
Set the VRF on the host entry. Your VRF should also be defined on the management interface itself.
Please issue the commands:
no logging host 10.10.10.10 transport udp port 10023
logging host 10.10....
- 4,690
2
votes
How do i factory reset a Allied Telesyn AT-9924t?
Following the steps from here you should be able to reset the password.
1. Connect to the router using a RS-232 cable
2. Connect to the router via HyperTerminal
3. Settings for HyperTerminal = 9600 - ...
- 21
2
votes
DLink switch loses configuration on power off!
Previous answer given by patch67:
go to web gui, Save Configuration / Log. Change Type to All, then Apply.
works perfectly for my device: dgs-3120-48tc
- 21
2
votes
Accepted
Switch bandwidth management
In your scenario, most ethernet frames will be dropped, and it is up to the upper-layer protocols, e.g. TCP, to handle that. There is a rudimentary ethernet flow control, but it is poorly supported. ...
- 98.4k
2
votes
Accepted
Cisco 2960-X IP Address
Based on what you are trying to do, I would suggest not trying to add multiple IP interfaces on your L2 switch, but rather configure your router so you can route from the server VLAN to VLAN 1 and ...
- 96
2
votes
Why management interface is always vlan interface and not just physical interface?
This depends on the model of device. Some of them have dedicated physical management interfaces. Others just use a vlan SVI interface.
- 969
2
votes
Accepted
Value of Terminal Server in a Data Center
I agree with @Ron-Trunk. Out of Band management is essentially an insurance policy for when things go terribly wrong so ultimately, I see this as a math question. First you have to determine the "cost"...
- 136
2
votes
Value of Terminal Server in a Data Center
Many devices have management ports (usually Ethernet) that can be used for out of band management, similar to a terminal server. You also have to consider access to other equipment like servers, ...
- 66.9k
Only top scored, non community-wiki answers of a minimum length are eligible