Hi all,

I have had a strange problem with the HP 5500 Switches we use in our network infrastructure.

At seemingly random time and locations, some of the HP 5500 switches stop propagating the VLAN 10 across the network. There are other VLANs configured on the switch, but all of them function as intended. The present set-up routes all the VLANs through the router provided by the service provider. The switches are still accessible via VTY, and there seems to be nothing in the logs to indicate why such an incident could occur. And as strange the problem is, a simple reboot of the switch seems to resolve the issue.

Here is how the port is configured:
interface GigabitEthernet1/0/23
 port link-mode bridge
 port link-type trunk
 undo port trunk permit vlan 1
 port trunk permit vlan 2 to 3 10 15 30 67 70 100
 speed 100
 duplex full
 stp edged-port enable

Thanks in advance,

Have an unbalanced power supplies error for 3850 power stack. Cisco tech is recommending the following steps

-Leave power stack and rejoin monitor logs
stack-power switch 4
standalone
no standalone

How exactly is this accomplished?

We have a Meraki MX400 firewall, and 11 SG500-52P Switches we are using for Access.  I'd like to get something for Core or Aggregation, what kind of product do you recommend?  Would we benefit from having a 3850 or something along the those lines to serve as the distribution or L3 switch?  Should we create stacks for the 11 SG500-52Ps?

Thank you in advance.

Nico

hi folks

i am wondering if anyone ever used Cisco WRVS4400N's port mirroring feature to monitor traffic of a given port?

i have tried any individual port or even all ports together as the source, but i still cannot see any mirrored traffic from listening to the specific port (Port 4), as shown below.


i have no idea why the device doesn't work as expected. do you have any suggestion please?

regards,
bbao

Hello,

I try to configure mutiple vlans on my switch HP 2620, with windows 2008 r2

Windows Server - IP 10.0.97.1 (AD, DHCP, DNS, is the secondary domain, sync over VPN)
Router Draytek - IP 10.0.97.254  (with vpn lan to lan, to another office)


VLAN97 SERVERS - 10.0.97.2 - 10.0.97.253
VLAN98 USERS     -  10.0.98.1  -10.0.98.254
VLAN 99 CCTV      -  10.0.99.1  - 10.0.99.254
VLAN GUEST        -   10.0.100.1 - 10.0.100.254 (Only internet acess)

Subnet in Router:
10.0.98.0 255.255.255.0 next-hop 10.0.97.2
10.0.99.0 255.255.255.0 next-hop 10.0.97.2
10.0.100.0 255.255.255.0 next-hop 10.0.97.2

Config:

hostname "SW-2620"
console idle-timeout 300
console idle-timeout serial-usb 300
max-vlans 30
timesync sntp
sntp unicast
sntp server priority 1 10.0.97.1
time timezone 60
ip route 0.0.0.0 0.0.0.0 10.0.97.254
ip routing
snmp-server contact "Dep. IT" location "office2"
vlan 1
      name "VLAN1 - DEFAULT_VLAN"
      no untagged 1-24
      tagged 25-28
      no ip address
      exit
vlan 97
      name "SERVERS"
      untagged 1-24
      tagged 25-28
      ip address 10.0.97.2 255.255.255.0
      ip igmp
      exit
vlan 98
      name "Users"
      tagged 25-28
      ip address 10.0.98.2 255.255.255.0
      ip helper-address 10.0.97.2
      ip igmp
      exit
vlan 99
      name "CCTV"
      tagged 25-28
      ip address 10.0.99.2 255.255.255.0
      ip helper-address 10.0.97.2
      ip igmp
      exit
vlan 100
      name "Guests"
      tagged 25-28
      ip address 10.0.100.2 255.255.255.0
      ip helper-address 10.0.97.2
      ip igmp
      exit
spanning-tree
…

I am trying to add a non cisco SFP between two catalysts, and am getting the error %PHY-4-SFP_NOT_SUPPORTED: The SFP in (PortNo#) is not Supported.

I have tried running the commands:

Switch(config)#service internal
Switch(config)#no errdisable detect cause gbic-invalid
Switch(config)#service unsupported-transceiver
Switch(config)#int gi0/49
Switch(config-if)#no shutdown
Switch(config-if)#do copy run start

However, the issue is still occurring. I have rebooted the switch after the above with no joy. Cable being used is a StarTech 3m SFP+ 10-Gigabit Ethernet (10Gbe) Twinax Cable. I will be upgrading the firmware to 15.2.6 while waiting for a reply.

Any help will be appreciated.

Switch Ports Model                     SW Version            SW Image            
------ ----- -----                     ----------            ----------          
*    1 50    WS-C2960X-48TS-LL         15.2(2)E6             C2960X-UNIVERSALK9-M

Hi guys,

i am new to networking, we have a requirement where we need to design a network for a small office,
there are 15 users with ip(cisco)  telephony  headsets.

Please suggest me which Cisco router(small bussiness) with part number is suitable for the requirement.

Hi

I'm setting up a Huawei layer 2 switch Monday morning. Haven't done one of these before. I'm familiar with HP and Cisco. Could some one assist with some cli commands.

I need a few vlans configured and a trunk port from the firewall.

Thanks

I want to secure my network down by splitting up devices into seperate vlans so that they are inaccessible to each other but they can all access the internet on one port situated on the default vlan.

My setup is as follows

HP 2524 switch connected to a virgin router via CAT 5 on port 13 to the internet. The virgin router has an IP of 10.168.0.1

SWITCH CONFIG

(Vlan 1 Default) Port 13 = Connection to router

(Vlan 5) Port 4 = Connection to Device 1, no ip on vlan, static ip on device connected is 10.168.10.10

How do I get the device on vlan 5 to get out to the internet on vlan 1 ? I want my device to be on a seperate subnet and to be invisible to other devices.

I am looking for some good quality unmanaged network switch for my small business.

They will be running everything from Pcs to cameras.

I would like something of very good quality and reliability/

Best POE Silent 10/100 and Gigabit UnManaged Network Switch

Thank you.
robbie

I am not sure how to prevent this and hoping you can help. In the image, when vlan 1 goes down, I'm unable to ping the router inside interface at all. How can I make sure that I am still able to reach it. It shows UP and UP either way. This is becoming an issue when it comes to to my TACACS server since the TACACS cannot reach the inside IP.