Switching

When I have to remove port security completly from a 3550 switch and re-apply security again to all ports, SOME ports that had the original mac address start being violated? even though the mac has not changed?I have used the clear port security comm...

Hi there, I'm kinda new in networking so i have a beginner question. I have a pc conected to a switch and the switch conected to a router in packet tracer. I can't acces the switch or router by click to configure CLI. My problem is: How can i connect...

Hello, everybody!I have spent all the day trying to resolve an stupid problem. My ASA has two interfaces LAN and Outside2.I can ping all the resources behind the Outside2 interface.But I can't ping anything behind the LAN interface. The same way, ASA...

Hello, everybody!I have a strange situation with my ASA.It has an interface:sz(config-if)# show int eth0/1.1Interface Ethernet0/1.1 "LAN", is down, line protocol is down  Hardware is i82546GB rev03, BW 100 Mbps, DLY 100 usec        VLAN identifier 55...

Hello,A client of mine wants to use private-VLAN ("isolated ports") on interfaces configured as IEEE 802.1X with MAB  - but I am running into trouble with the switchport mode private-vlan host command: " Command rejected: Gi1/0/1 is Authentication. A...

Hi Friends,In my site having more than 35 3750X stacking switches. From the installation itself we found more no of hardware failures.The symptoms are both power supplies are working i.e PS ok LED-green and AC ok LED-Green.But no other LED is glowing...

I'm testing the marking with a simple acl and class, but with Wireshark, all traffic dscp =0 . g1/0/1 is connected wiyth a PC for testing only3850 with 03.02.03.SE code. Did I do something wrong here ?ip access-list extended ACL-Test permit ip any an...

Hi there,Thanks for reading.  I have a NEXUS 5596 which I'm trying to get talking to a Windows 2012 Radius server.  Seems pretty straight forward but I'm not seeing any progress.Here's what I've configured on the NEXUS:radius-server host 10.11.54.2 k...

I am planning to implement VSS on two 4506-E Sup 7-E switches. We're currently running HSRP on all of the SVIs. What happens when i run the VSS commands and restart  the switches? Does the HSRP configurations still stay? Also, would there be any conf...

i  have cisco cli router. I can access it through using its internet  gateway address (http) from any location out of my office.i need to  disable its http remote management access for all outer world except me. how can i do it, please tell me specif...

Hello                 We recently added two new Cisco switches(been using it for 3 months now), WS-C3560X-24P-S and WS-C3560X-48P-S ( they both had C3KX-NM-1G on them)We are about changing to 10G because of need and want to order for C3KX-NM-10G netw...

The DHCP server my Macs use is not on the local subnet.  In my firewall rules, I allow traffic from the DHCP server address UDP 67 to local UDP 68, and that works... until it doesn't.  Every now and then, I find a machine with a zeroconf address and ...