Is Cisco Root Switch the only one that sends Hello Messages

in a network with hierarchical switches , do all switches send Hello messages to their neighbors or  only the Root switch will do that ?

Thank you

Hey guys,

I’ve two PowerConnect 6224 switches which are linked to a Dell SAN (for redundancy) and one of the switches are then plugged into the local LAN.  I’m changing the local LAN switch but when I connect the Power Connect SAN switch to the new one, it doesn’t work - I can’t access any of the servers on the SAN - it’s a big odd, as there’s no config on the previous LAN Switch- what am I missing?

Cheers

I have 10 HP/Arruba Procurve 2530 POE+ switches.  We purchased new Ruckus r610 access points that run on 802.3at instead of 802.3af.  They pull about 23 watts at startup, then even out between 5 and 8 watts.  If all ports on the switch are running at 5-8 watts, there is enough power for all of the devices.  But because they do use over 23 watts at startup, the switch won't provide power to all of the ports because it goes over the maximum available power.  They do some calculation of current power and max power and figure out how much they can provide that is more than the running 5-8 watts, but less than the startup 23-25 watts.  Arruba says they can't do anything, as it's POE standard.

I can turn off lldp on the switch, so all ports basically run in 802.3af mode.  The APs all power on and run fine, except they turn off the USB and second ethernet port.  Apparently that is not a setting that I can change on the Ruckus APs.

I really want that second port turned on, but want to avoid purchasing more switches or ac adapters.

Anyone have any ideas on how to do this?

Tried and didn't work:
Manual CLI command for AP to run in 802.3at mode

Turn lldp back on, but limit max power to switch ports to 10W, with and without manual AP command

Best way to configure spanning tree on HP Procurve switches

What switch should be the root? Best Practice?

Thanks

Configuring VLAN
Newbie to VLANS so haven't a clue of this stuff folks.

What is the differences with hybrid, trunk and Access vlans. Also I thought a trunk port was auto tagged, why would I get asked do I want it tagged or untagged.

Using a d link dgs-1510-28p that im trying to get me head around Ta

This is 100k sqaure feet, two storey, new manufacturing facility, on its stage of network/architect design.
We estimate that there will be 200 spots that need network access, for computers, VoIP phones, WiFi APs, smart TVs and security cameras.
In about 80 spots of the above, a VoIP phone and a PC will coexist.  These spots are the sitting spots or cubicles for engineers, managers and office staff.

The main question - should we run two network drops or one network drop in each of above 80 spots?
Option1: Two drops - One for VoIP phone, the other one for the computer.
Option2: One drop - VoIP phone and the computer will be daisy chained.

Not trying to over complicate the above main topic, we do have a few other questions as below in case you'd like to share some insights as well
1. Should we separate VoIP phones and computers into different VLANs? Why?
2. If we put VoIP phones on a separate VLAN, will the above Option2 still be doable?
3. Should we deploy CAT6A or CAT6 cables? 10G network is getting popular.
4. Should we run all cables directly from the end spots to the server room? Or, install some switches in the middle?
5. Any other thoughts? Or anything we should be aware of?

Thanks in advance!

Hi
Aruba (procurve) 2920 is showing only ports 1-24 on the console.  Is this correct?
 Thanks

I have a Ubiquiti USG device here.

Its a quite simple setup.

-  Its WAN1 port is connected to my modem-router.
-  its LAN 1 port is connected to an Ubquiti Edge Switch

I can get internet perfectly if i plug cable from modem into switch. However, when internet goes thru the USG device to Switch - I get no internet.

It is as if the USG is blocking internet to the switch.

The USG is acting as DHCP server. What could be blocking the internet in the USG? Any suggestions would be much appreciated.

Cannot ping or access via ip new cisco switch


show running-config
config-file-header
SG350x
v2.4.0.94 / RTESLA2.4_930_181_045
CLI v1.0
file SSD indicator encrypted
@
ssd-control-start
ssd config
ssd file passphrase control unrestricted
no ssd file integrity control
ssd-control-end cb0a31af4e4430033719968c0
!
!
unit-type-control-start
unit-type unit 1 network gi uplink te
unit-type unit 2 network gi uplink te
unit-type unit 3 network gi uplink te
unit-type unit 4 network gi uplink te
unit-type-control-end
!
spanning-tree mode mst
vlan database
vlan 3,5
exit
voice vlan oui-table add 0001e3 Siemens_AG_phone________
voice vlan oui-table add 00036b Cisco_phone_____________
voice vlan oui-table add 00096e Avaya___________________
voice vlan oui-table add 000fe2 H3C_Aolynk______________
voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone
voice vlan oui-table add 00d01e Pingtel_phone___________
voice vlan oui-table add 00e075 Polycom/Veritel_phone___
voice vlan oui-table add 00e0bb 3Com_phone______________
bonjour interface range vlan 1
hostname SG350x
management access-list admin
permit
exit
ip http authentication aaa login-authentication https local radius
snmp-server server
snmp-server location "Server Room"
no ip domain lookup
ip name-server  192.168.1.10
ip telnet server
!
interface vlan 1
 no ip address dhcp
!
interface vlan 3
 name "Corpyy"
!
interface vlan 5
 name "Guest"
!
interface GigabitEthernet1/0/1
 …

Hi,

Any idea how to improve the network design to ensure the network performance , link redundancy (RSTP) and compatibility on layer 2 to layer 3 are working fine on  video management system?

Thanks

When dealing with MTU in a networking environment, how do you verify what MTU size is being used/generated from within two systems?  Also, can you explain or share the size of MTU of the default or best practice MTU size for communication on different networks and or devices?

Hi -

I have two 1920 HP switches and I would like to share VLANs between the two. Coming from a Cisco background, I thought setting up a trunk would take care of it but no luck.

Basically what I did was to create a trunk port on each of the switches and directly connect them with a network cord. That did not work, the VLANs did not propagate.

What am I missing here?

Thank you for your help!

Hi
I had issues routing voice traffic across two same make/model switches, one as a core and the other as edge.   Managed to resolve this by tagging ports in the respective vlans on the switches, simple fix but not something im used to.  
However we are now trying to get two older HP/3com switches to do the same.

Switch Config overview:

HP1910 switch using default vlan1 across all ports.  Connected to:
HP2910 switch vlan1 interface (acts as core and routes to firewall).  Connects to:
HP/3com2952 switch vlan1 interface.  This will connect to:
A new HP2910 switch.  This will in turn re-route back to the HP1910 above to form chain topology rather than current loop.  I'm assuming this is good?

I am not using any trunks or LACP.

Part one will be to route the new HP switch back to the 2952, once working ill then connect this back to the 1910.

So far i have created a new vlan20 on the old 2952 and tagged the port thats connected to the new 2910.   Here is the config:


 
[3Com Baseline Switch]display current-configuration
#
 version 5.20 Release 1101P10
#
 sysname 3Com Baseline Switch
#
 super password level 3 simple
#
 domain default enable system
#
 telnet server enable
#
 ip ttl-expires enable
#
vlan 1
#
vlan 20
 description Voice
#
radius scheme system
#
domain system
 access-limit disable
 state active
 idle-cut disable
 self-service-url disable
#
user-group system
#
local-user admin
 password simple
 …