Switching

hi all,we have a C3750 and C3560 trunk together and found the link to be intermittent. we have set both ends to 100/full, changed UTP cable and changed switch ports but still the same. any idea what to do next?3750#sh log | i FastEthernet1/0/1Dec 14 ...

which one should be native on this config?interface GigabitEthernet8.1 encapsulation dot1Q 1 ip helper-address 172.25.200.3 no ip redirects no ip directed-broadcast bridge-group 1!interface GigabitEthernet8.2 encapsulation dot1Q 2 no ip redirects no...

If I have a 7010 and my primary sup becomes the standby and the secondary sup becomes the active will the interfaces go up or down with it?  I thought the Nexus line was non-disruptive, this was one of the selling points, however, I see interfaces go...

Is there a way to log the violations of a MAC ACL on the current IOS of the 2960-3560 family?If not is there a way to just to allow DHCP and restrict all other L2 Traffic by using a MAC ACL?

Hi allI have noticed a large volume of traffic on our network over the past few weeks, with traffic passing over our ISP managed network. We dont have a router between our LAN and the ISP router, the connection is setup as a switch port. With this in...

I am confused about HSRP groups. I understand that they are associated with a unique virtual MAC.I read one article that said a different group id is used for every block of 16 vlans; however my CCNP study book says I can use one group for all interf...

I am trying to enable NLB on Cisco 3750 IOS ver 12.1(11). I got the following error and not sure if ver 12.1 supports this future or not.?Config -arp 172.16.63.241 0300.5e11.1111mac-address-table static 0300.5e11.1111 vlan 200 interface fa1/0/1 fa1/0...

I want to configure Ethernetchannel on one sw2960G:Scenario as :         Port gigabit 1,2 connect with port gigabit 1,2 of my device A         Port gigabit 4,5 connect with pot gigabit 1,2 of my device B         Device A connected device B         Su...

i have a 4908G-L3 running IOS (tm) L3 Switch/Router Software (CAT2948G-IN-M), Version 12.0(7)W5(15d) with two vlans on side of my network and a CISCO 3560 running C3560 Software (C3560-IPBASE-M), Version 12.2(35)SE5 on the other side.They are connect...

Hi Gents,I hope someone of you could help me.I have 2 VLANs in my network rightly configured with pim (sparse-dence-mode).In this 2 VLANs there is lot of multicast traffic and the multicast routing between vlans is working properly.But when i type "s...

Since we now can use static routing in our 2960's with LAN Base image.1. Can we also configure routed ports, or are we stuck with SVI interfaces?2. Has anyone seen or done any performance tests for routing in the 2960? I would expect it to be good if...

Hello,I have a curious mac adresses in my cisco dhcp server as you can see below:sh ip dhcp bindIP address       Client-ID/              Lease expiration        Type                 Hardware address10.1.10.209   0152.4153.2000.0c29.    Dec 11 2010 06...

Hi,I am a newbie trying to understand CIDR.from my understanding, CIDR was introduced to replace the classful networking scheme having Class A, B and C of network addresses. Does this mean that an organization can be assigned an IP network of the typ...