Switching

I'm struggling to understand connectivity problem between a switch and firewall.  The Nexus is located between the Core switch and the edge firewall. It's purpose is to divert traffic via ITD for content filtering.  My problem right now is that I'm n...

Hello,I have a cisco router connected to ISP using Dialer interface. I can access the web no problem, but have problems configuring port forwarding to a local computer from outside. Trying with tcp port 5555.Any idea what I am doing wrong? Thanksvers...

Hello Professionals,I have configured Archive to log config whenever type write memory.I would like to use this auto backup in other way too.Could anyone tell me how to configure followings?1. Is there possible to backup config whenever I make any ch...

Recently I've seen some switches show ports with a status of "notconnect:"  What does the colon at the end signify?I don't have it documented where all I've seen it but I just now saw it on a 6 stack of WS-C3650-48PD running 16.12.06. About 85% of ou...

So, previously I had a static IP address I could point putty at that would SSH just fine. I verified the address in a Show Run form I copied two days ago, so I'm not crazy. The config was written to memory multiple times so it's not that.Today, after...

Switch A, Cisco 9300, VTP mode transparentinterface GigabitEthernet1/0/5switchport access vlan 3switchport mode accessSwitch B, Cisco 3560, VTP mode transparentinterface GigabitEthernet1/0/1switchport access vlan 3switchport mode accessVlan 3 (L2) vl...

I have a strange one. C9200 switch, 17.03.04b. Setting up a port for a postage machine. config as follows:ip dhcp pool cin-6address 10.3.6.2 client-id 0100.1b00.4116.4dinterface GigabitEthernet1/0/15description Postage machineswitchport access vlan 6...

Hi,I have been testing MST in my lab which has 3x Cisco Catalyst WS-C2960CG-8TC-L switches.I configured only MST and LACP on each switch and connected them in the ring topology. Test is to see how much time it takes for convergence in such conditions...

Hello,Pleased help me! I have configured macro auto execute on Switch C3560E as below but it does not work, The idea is that when a link change to up, the switch automatically assigns this link to VLAN 10, and then link down, switch removes this link...

Hi,I am trying to set up an SSH connection to my switch, but right now there is some lower level problem. I have set up my FastEthernet0 interface to ip address dhcp and the command show interfaces FastEthernet0 shows the correct address. Even if I t...

When I start the switch, the text BOOT FAIL C appears in the console and the gear indicator, the system, flashes orange, tell me what to do?

Hello,I did a factory reset in my cisco switch 9200L 48 PoE, but after doing that, it seems the switch require to install new OS and there is no copy OS in flash memory. When I try to connect external USB it doesn't respond. What should I do?Here is ...

hi! I am curious as to whether the requirements requested by the customer will be supported by the Catalyst Switch. The requirement is that when the H.H.H PC is connected to the Catalyst Switch port A, a history of the H.H.H MAC connection to the A p...

On my Cisco 2960CG running 15.2(2)E10 when I run command show ip igmp snooping detail, among other things I see that IGMPv3 snooping (minimal) is enabled. Why is this feature called minimal? What is missing from normal v3? Is there any official Cisco...