Switching

As a Cisco LAN Administrator, what are the things one need to do in order to be proactive.As at now. 1. I have done a network LAN architecture diagram to depict where each of the switches are2. Done a software and hardware inventory3. Checking to fin...

I need to configure LACP on some ports on blade 7 and blade8 in my 6509. Blade 7 and 8 are curently configured for PAGP. What command do I need to run to enable only some ports on blade 7 and 8 to talk to LACP, I can't find anything on CCO, all it sa...

Hi, everyone.I have a dhcp-related problem in my cable network. When all cable modems are being reset at once and try to get an IP, things get stuck. I see DHCPDISCOVER message from cable modems and DHCPOFFER sent back to them. Now a cable modem shou...

Is there an SNMP trap to watch for Spanning Tree / Hostflapping issues?Or can anyone give any proactive advice on the matter?Thanks.

Any website listed all IOS version of vulnerability?

Hi Experts,Any body can see it and give right rejoin.Can we create sub-interfaces on serials? if yes how and what is the use by creating sub-interfaces on serials.Regards,Naidu.

I have a switch with one VLAN that is up and operational. Passing traffic ok. I can ping telnet to the switch with no problem from other devices. From the switch I can ping other devices no problem. I cannot ping the VLAN ip when consoled or in a VTY...

I am trying to determine the source of traffic across a DS3 link.I have applied an access-list inbound on the serial interface as shown:access-list 102 permit tcp any any range 1 65535 log access-list 102 permit udp any any range 1 65535 log access-l...

I am using a Cisco Catalyst 2960 on an industrial network. The MAC address of a particular type of device is not discovered by this router. I have done some tests with a simple switch and was able to discover the MAC and assign an ip to this device.I...

We have core switch WS-C3750G-12S-E support SFP module and existing switch are WS-C3524?XL?EN support GBIC and distance between core switch & edge switch is max 150 meters. I would like to know whether its will work to establish link between switches...

I'm installing 2 new 3560 switches to replace 4 2950 switches. The firewall is current doing all the routing and will continue, I will not be using the new switches for any routing.My question is do I setup the ports that connect my firewall interfa...

Hi,After replacing a WS-X6548-GE-TX, I cannot configure the ports as ?switchport?:swit(config)#interface gigabitEthernet 2/48swit(config-if)#switchport swit(config-if)#switchport mode access Command rejected: Gi2/48 not a switching port.If I change t...

Hello Cisco Networkers! Need your expertise. Can two subnets communicate with each other?PC2 to PC3 PC1 to PC3 PC1 to PC2Refer to the setup below.Thank you in advance!http://img509.imageshack.us/img509/8650/shangdo9.jpg

I?m replacing 4 2950 switches for 2 3560 switches, there are several Vlans and for the most part the Firewall is doing all the routing. The current 2950s do not have a default gateway set, for any Vlan, so my question is should I setup a default gat...