I am using the Juniper migration tool but is this the best method when you are changing vendors from Cisco to Juniper as it relates to access switches. I need to be 100% accurate with the configs . Any suggestions much appreciated.

Any good network devices, such as routers, switches monitor and management software/ tool recommend?

My private IP addressing is in the 10.10.10.x network, 255.255.255.0 subnet mask, 10.10.10.1 is the default gateway. Now on some computers, I am getting a subnet mask of 255.255.255.128. I couldn’t figure out why?
Can someone help me with this?

I actually replaced the switch, thinking that some ports on the switch were bad, but I keep getting the same issues.

Thanks!

Hi,

I am trying to setup Hot standby DHCP server2012 (two DHCP server with multi-scope)
192.168.0.0
192.168.1.0
192.168.2.0
I am using two servers with fail-over DHCP configuration. (Hot standby) with IP address
192.168.0.1 for server 1 and 192.168.0.2 for server 2

In the Cisco 3750 switch I created 3 vlans
Vlan 10 with an IP address 192.168.0.3
Vlan 20  with an IP address 192.168.1.1
Vlan 30  with an IP address 192.168.2.1

In the configuration I added IP helper-address command to refer DHCP servers
Under each Vlan interface I added two IP helper address

Under Vlan 10
ip helper-address 192.168.0.1
ip helper-address 192.168.0.2

And so on for Vlan 20 and Vlan 30

The computers work fine and got IP address and getaway for each Vlan. However, I tried to test the fail-over DHCP and I shut down the DHCP server with an IP address 192.168.0.1 and waited to get computer an IP from second DHCP server but it's not working. I Release and renew IP and nothing changed.

Is there any missing part of my configuration?

Thanks

Hello,
I would like to know what are the ways to migrate catalyst 9k switches already running in the network and needs to be migrated to Cisco SDA.

Current setup:

All the switches in the network are migrated to Cisco 9K.  Cat9500 is a collapsed core switches and few IDFs with cat 9300.

We wants to migrate these devices to SDA where we have DNAc and ISE in the HQ. All the cat 9k switches are enabled with Advantage licenses.

Can anyone please with steps to migrate to Cisco SDA.

Hi,

I have Nec ITX-3370-1W(BK)TEL POE phone and when I attached it to Cisco 3750 POE switch the phone not working while when I attached Nortel 1120E or 1140E they are working.

Any idea to fix the problem?

Thanks

Hi,

Our company internet provider set us up with a new modem which would deliver faster speeds and has the IBGP failover ability. In order to use the IBGP failover we would need to designate 1 (or 2?) IP's from our small block of IP's, or get rid of the current ones and use a larger block of IP's.

Does it make sense to just consolidate our current IP's instead of purchasing a larger block of IP's? We currently have 5 public (outside of the broadcast)

Is it best practice/ industry standard to purchase larger amount of public IP's?

Thank you.

I have  cisco switch, a 3850 and created a port channel for 3 ports.  Each port is a 10G port.  On the other side, I'm using a synology with 4 (1G) ports. I did a LACP on that side as well and bonded 3 of the ports.  It shows the link at 3000 Mbps.

On the cisco switch, the port channel shows a speed of a-1000

Not sure why it's only connecting at 1000, but when I did a speed ?, it only gives me the options of 10, 100,1000, auto and nonegotiate.  I tried auto and it puts it back to a-1000.  I tried nonegotiate and it didn't take that command.  So how do I get the port channel to run at 10G, so it can at least transfer at 3G?

I am looking to replace a L3 switch in our datacenter but I currently do not have access to the current config.  As it sits right now, the L3 switch has some form of VLAN setup that I cannot see but I know is working.  Our datacenter has provided the following documentation, but where I get confused is on the setup of our ubiquiti edgeswitch with the trunking or vlan tagging of ports.

The datacenter has provided us static IP's on a /29 for the first routing network and a /28 on the second.  Apparently I need to create 2 VLANs where I can assign 5 ports on the switch to the /29 and another 16 ports to the /28 VLAN.  I am just a little unclear about how to go and do this is the edgeswitch unit.

They said that the second network needs to be routed to the first usable IP on the first routing network if that makes sense. Is anyone familiar with this setup and these particular L3 Switches to help me with the settings? Thank you!

please check this message i have received it on our Cisco switch 3850
%SW_MATM-4-MACFLAP_NOTIF: Host 6c4b.9022.14cf  in vlan 220 is flapping between port Gi1/0/19 and port Gi1/0/20 ,
Dose this message indicate that i have a L2  loop or just to inform me because no ports go down and up again?

Hi

I have a Cisco WS-C2960X-24Port POE switch which is being used to connect Ruckus wireless access points.
I would like to connect a new access point to the switch .I have now setup the static IP address and subnet mask on the access point by logging into the GUI.
I logged into the Cisco POE switch and please see the show run configuration. On the Port 6, 7 and 8 access points are connected, and they are all working condition.

Now I would like to configure port 1/0/9 with same config as done with other ports (6, 7, 8 and 9)
Please post me step by step to configure port  interface GigabitEthernet1/0/9

interface GigabitEthernet1/0/6
 description *** AP's ***
 switchport trunk native vlan 109
 switchport trunk allowed vlan 91,92,98,109,110
 switchport mode trunk
 switchport nonegotiate
!
interface GigabitEthernet1/0/7
 description *** AP's ***
 switchport trunk native vlan 109
 switchport trunk allowed vlan 91,92,98,109,110
 switchport mode trunk
 switchport nonegotiate
!
interface GigabitEthernet1/0/8
 description *** AP's ***
 switchport trunk native vlan 109
 switchport trunk allowed vlan 91,92,98,109,110
 switchport mode trunk
 switchport nonegotiate
!
interface GigabitEthernet1/0/9
 switchport access vlan 384
 switchport mode access

Any help would be great
Thanks in advance.

I have a copy of Cisco ACS, ver 5.3.0.40.9 that we use in our environment to authenticate port access in our Cisco switches to our AD controllers to ensure the device attaching is a company asset. Has worked great for years until 2 months ago. New MS patches break the authentication process.  In the ACS server, the message "unknown AD error" is being reported.  Anyone else run into this?  To resolve, we have to back the current patches back out. We plan on rolling out ICE next year.

Using this command to add switch  to stack: 2960 stand-alone switch:

switch 1 renumber 4

this was done before actually adding to stack

now when i look at running config or sh switch I have the following:
appears as 2 switches:

L3switch4#sh switch
Switch/Stack Mac Address : b8be.bf73.6500
                                           H/W   Current
Switch#  Role   Mac Address     Priority Version  State
----------------------------------------------------------
 1       Member 0000.0000.0000     0      0       Provisioned
*4       Master b8be.bf73.6500     12     1       Ready

and i have interfaces for 1/0/1-51  and 4/0/1-51     the 4 being the active 1

Just want to understand this behavior ? I'm guessing that when I add it to the 3 switch stack that the 1/0/1-51  switch 1 will disappear? - I gave it(switch4) a lower priority as well to ensure it did not become master. Thanks for helping me understand this.  Why did it create what seems to be 2 switches?