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Forum Posts
Resolved! Spanning-Tree force root bridge election
My regards, What is the best for the switch to always win a Root Bridge Election in STP, set spanning-tree priority 0 or set spanning-tree root primary ?? Thanks
Resolved! Cisco 2960-X Switch cant boot
Hi I've got a Cisco WS-C2960X-48FPS-L switch that won't boot properly and it repeat the start proces this are some messages I see: Image passed digital signature verification Board rev: 18 Testing DataBus... Testing AddressBus... Testing Memory from ...
Hello, I have multiple Cisco 3650's that I have no problems with, but I have one that will allow me to get to the gui but will not take the login and password. It gives me a "Wrong Credentials" error. I have searched the discussions on here and h...
Hi,we have some C3650-48FQM which shows strange output on "show cable-diagnostics tdr int gi x/y/z"All connections are 4 wire (2 pair) connections. switch#sho cable-diagnostics tdr int gi1/0/38 TDR test last run on: August 18 10:39:48 Interface ...
The setup and show commands:interface GigabitEthernet0/4 no nameif no security-level no ip address!interface GigabitEthernet0/4.100 vlan 100 nameif exadata_client_18 security-level 50 ip address 10.18.X.X 255.255.255.0 ! # show vlan100 # sh int ip br...
I have cisco 3850 switch running 3.2.3SE IOS where i am seeing Unwanted Telnet connections from 192.168.1.2 IP which is no were available in my network. I Tried clearing the VTY sessions but its Re-Appearing again with in a second. Can any one help m...
I have core switch and WLC is connected with one of the port. But As I send 10000 Ping Packets of WLC is shows some packet Loss. There are no errors and CRC on interface connecting to WLC. Success rate is 99 percent (99981/100000), round-trip min/avg...
Good Night with the command: S1(config-if)# switchport port-security maximum 2Im configuring port security to allow a max. of 2 decives on that port, but if i connect to the port an IP Phone, i ve seen on several documentation that i have to configur...
Hello, I am in a process of upgrading old cisco catalyst cisco WS-C4503-E (MPC8572). Existing Code : cat4500e-universalk9.SPA.03.02.00.SG.150-2.SG.binnew proposed Code : cat4500e-universalk9.SPA.03.08.08.E.152-4.E8.binI dont have access ...
I have a Catalyst 9300 switch that we purchased through a government contract roughly a year ago. Around the beginning of June this year, we had one of our users report that they'd lost connectivity on their machine. Troubleshooting eventually reveal...
Resolved! multicast 224.16.17.255
Hello guys,We have configured cisco switch with igmp version 2 and we got a system that is taking the IP 224.16.17.255 for multicast. Is it a valid IP ending in 255? is it not a broadcast one?A multicast IP that end in 255 is a valid IP for multicast...
One of my clients is rolling out VoIP, so I wanted to use the 'voice vlan'.interface GigabitEthernet1/0/13 switchport access vlan 1001 switchport mode access switchport voice vlan 200 endWhen I plug a Polycom phone it the interface, LLDP does its ...
we delete vlan regularly by below command--#no vlan 100 but Vlans are stored in flash memory in vlan.dat fileso is it necessary to delete Vlan data from vlan.dat file and steps?
Cisco 9500 - Stack Ring - Redundant false + Power Supply Module 0 on (fan failed)Hi,I have a recently connected a cisco 9500, our network monitoring system is showing the below alerts. The switch ring and the power supply's appear to be ok.9500, Can ...
Hello,Have issues with the sx550x switches (with sg550x as well but these seem to be more stable now on firmware version 2.3.5.63).Situation is as follows, 2x SX550x switches (SW003) in stack uplinked to core switch 4500x, this over a trunk port on e...
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