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Forum Posts
Resolved! WS-C2960x %LINEPROTO-5-UPDOWN
Does anyone have a explanation for this problem. Since these model switches were introduced to our network, logs report a never-ending Up-Down on random interfaces. I included a screen shot of the log under body message. I found this reference in cis...
Current I have the following network design (cisco 6500 – site 1)--------trunk------------(cisco 6500 – site 2) The 6500’s are configured to share certain vlans between both sites. On vlan 777 I also do OSPF for IGP between locations. Current 6500 t...
Hello,I have a pair of Cat 9500 and Network essential license. As I know there will be VRRP available to use with that licnese. I'd like to ask when both switches connect as a Stack switch, do I have to worry about the HA since they are acting as a ...
Resolved! DHCP relay issue with Nexus 3K
Hello all, I have a strange issue with some Cisco IP Phones. Recently we installed a couple of Nexus 3548 in our network, they are configured with vPC and HSRP, there are 2 catalyst 9300's for distribution connected via port-channel to the Nexuses....
What does this log entry mean and is it an issue? here is log: an 8 2019 09:14:09 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_FALLBACK: Address Aliasing detected for 3333.0000.0001 on vlan 1 from possible src-ip FE80::432::xxxx:xxxx:xxxx dst-ip FF05::1 sr...
I have an older 3750 that is need of an IOS update so I can do SNMP v3 on it before we get funding for a replacement. It is currently on 12.2(25)SEB1 and I'm trying to FTP over the MD 12.2.55-SE12. The downside is that this switch is in dire need a...
Resolved! Setting Virtual Terminal Password?
Hello,When I was configuring a set of Cisco C3750 network switches (firmware version: 12.2(25)SEB4), I apparently incorrectly entered my Virtual Terminal Password. It is not causing a problem, other than I do not get prompted for a password when I te...
I wondered how is possible to have a port "unassigned".For example, suppose fa0/1 belongs to VLAN 10.If I delete VLAN 10, is fa0/1 unassigned?Or, as in running-config there is, under fa0/1, switchport access vlan 10, I have to command no switchport a...
i have setup a new cisco 2960-x switch but having some trouble setting up ssh access. when i try and connect using putty it asks for username and password but keeps saying access denied every time. i must not be linking my username to the ssh login ...
Resolved! Port channel unassigned
I have a portchannel that is not coming up. I shows unassigned. Here is the relevant port configuration and output of the status Core-1#sh run int g9/21!interface GigabitEthernet9/21description CHANNEL to Stack-1 G1/1/1switchportswitchport trunk enca...
Hi, I am using PT 7.2.1 and am trying to emulate our 4500 core using 2 3650's. I understand I cannot use VRRP and the likes but was hoping I could use HSRP ?. I have the 2 3650's trunked together using 2 interfaces and a port channel however HSRP doe...
I recently upgraded a switch stack from 03.07.04.E to 16.3.7 due to a number of bugs on the previous firmware, including high CPU utilization. I checked our monitoring software (Orion) after the install, and found that CPU #3 was still at 99%. Using ...
Resolved! VLAN Routing - SG300 Series And NSA 2650
Hey Tech Wizards, I am preparing to move over to a new phone system and one of the recommendations was to have our core switch be the default gateway for our networking traffic and for them to be on their own VLAN. Our NSA 2650 is our current DHCP s...
Resolved! Extrating IOS Catalyst 3550
What are the commands to extract IOS from a Catalyst 3550 and which program can I use?I had: TFTP, Putty, ExtraPutty, Tera Term...Which one of those is better?
Resolved! Changing Native VLAN
Hi,I am just a basic learner and i am having a small issue in setting up my router and switch I am using a 2620XM router and 2960G series switch I have created 3 vlan 100,200,300 on a switch and have assigned those vlans to 3 different PC's and chang...
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