all switch port down in few second when i try to "no shutdown" 1 port
Hi All,When I try to open 1 port by "no shutdown" command, all another port is down in few second and automatic up after that.Anyone know why I got this issue?Thank you so much.
Forum Posts
QoS usefulness
Hi Guys, I have a question about QoS deployment in a network. I have recently started working for a project network where they don't have QoS configured at all. As a best practice, I was about to suggest QoS configuration in this network. Current Net...
police/shape with policy-map
Hello,Is there any difference between the following configuration :police 10485500 1966080 3932160 conform-action transmit exceed-action droppolice 10485500 1966080 3932160Which one is recommended ?I have a Catalyst 4900M switch on which I can apply ...
"Received BPDU with inconsistent peer" when adding VLAN
Hi Experts,Any thought of my this problem?We have stacked 3650 access switches connected to a VSS via a port-channels. For historical reasons we have vlan 1000 as the native vlan on these uplinks. When we ad new vlan's to the access switch it seems t...
UDP Communication and MTU/MSS Size
PC A has a 1500 byte MTU size and 1460 byte MSS size. PC A needs to send 9000 byte of data to PC B. PC B has a 1400 byte MTU(I am not 100%, but I heard MTU size can be changed) size and obviously 1360 byte MSS size. PC A will segment 9000 byte of dat...
Certain Devices drop off network without sticky mac enabled 2960-X
Hello,I have a bizarre issue with 2960-X models (WS-C2960X-48FPS-L). After upgrading to any release after 152-4.E8.bin certain devices drop off the network periodically. This can range from every 10 minutes to around 4 times a day. The devices most a...
Do eBGP Neighbors need to be in the same subnet?
Do eBGP Neighbors need to be in the same subnet?
error message upgrade ME3800 cisco
Hello i want to upgrade ME3800 to me380x-universalk9-tar.156-2.SP8 so with this command : archive download-sw /overwrite tftp://10.5.11.145/me380x-universalk9-tar.156-2.SP8 ===> 10.5.11.145 : @ip de platform cisco prime it show me error message ...
Access Point on Trunk port Switch
Hi all,I have a problem connecting my access point to Cisco switch with multiple SSID. I have two SSID with VLAN 10 and 20. On my router, I have three dhcp pool MGMT, VLAN10 and VLAN20. A switch is connected to router by Trunk mode and connected to a...
Resolved! Error opening tftp (Timed out)
Hello,I installed a new router and trying to backup the initial configuration to our tftp server. But getting the error " %Error opening tftp://172.17.0.39/corporate-confg (Timed out)"I can ping the tftp server from router. There is no firewall in be...
Resolved! Replacing a 24 port switch with a 48 port.
Hello. I had a switch completely die on me. This is a first for me. It's a 24 port 3750. I only have 48 port 3750's around here that I can replace it with. I tried copying the config directly to the new switch and I'm using the same network module th...
Reset Catalyst Express 520 Login
Just purchased a used Reset Catalyst Express 520 from eBay. Vendor did not reset login back to default and doesn't know the current login credentials. Seems to be running fine. Boots up. I can get an ip address from it and can ping the device. When i...
How to distribute static route via OSPF
Hello Everyone,We have a 14 offfice MPLS network. All offices have Cisco 3750s running OSPF which replicate route tables via our providers BGP peers. I am introducing a new network in our SF office which is not directly connected so in SF we have ...
Resolved! SNMP trap
Hi, I am unable to remove the following commands from my Cisco 3750 running configuration. The best i can do is to run "no snmp-server", but that would disable all my other snmp queries to the switch. The strange thing is when I perform "snmp-server ...
Is an ERSPAN loop possible ?
We have two routers (Nexus 9k), router A and router B. Currently, we have one monitoring node connected to router A, and we're running an ERSPAN session from router B to router A to copy traffic of specific vlans (let's say vlan 100). Then router A s...
Recognize Your Peers
.jpg "VIP Community Legend"){kind=icon}
.jpg "Hall of Fame Master"){kind=icon}
