Switching

We have a customer who has a number of 3850 switches running IOS-XE 3.6.6These switches have a lot of ip helper-addresses configured one one VLAN (>50)We need to upgrade them to 16.6.6 but 16.6.6 restricts the number of ip helper-addresses to 16 per ...

I have five 3850s connected in a routed ring (EIGRP) running Auto-RP and PIM-SM.  Each 3850 has a few subnets hanging off them that I need to provide multicast routing for and for the life of me I can't get the RP mapping to include all the appropri...

Hello,We made some changes in our Database and i need to configure two layer 3 switchs working in redundancy for two differents site.If the first switch lose the internet connection the second gonna take the rule and allow all the users go the intern...

What is difference between C9200L-48T-4G-E & C9200L-48P-4G-E

Last months I've been trying many times (it needs to be done in the night, so it's sometimes frustrating and even scary), but I finally got my LACP-portgroup to work. Even though it works now, I hope you can help me understanding the situation becaus...

HI, I have a problem with a switch Cisco 2960X, It there's an error in the log on an interface, what bothers me and I do not have any device to connect it.Here is the run sho interface and the log message : My software version is : 15.2(2)E4 Oct 4 2...

Hello,I was wondering what will happen, if the dedicated DUAL ACTIVE link in a SVL setup fails? Would there be any disruption, in terms of traffic? Or in terms of SSO states? I see documentation about SVL links failure. However, I can't seem to find ...

I am trying to determine which ports are combo ports.  The model is WS-C3560CX-8XPD-S.Which ports are combo ports.   Here is the show ip int brief GigabitEthernet1/0/1GigabitEthernet1/0/2GigabitEthernet1/0/3GigabitEthernet1/0/4GigabitEthernet1/0/5Gig...

Hi all,I'm just curios about this scenario. Can a switch-to-switch 801.1Q trunk be expand over an L2TPV3 connection or does it need a 802.1Q-in-Q before it goes through the tunnel?Thanks folks,Norbert

We have a 3750 stack on 12.2 (25).  They have been in place for years with no recent config changes.  We have two ports that the phone drops connection on after a couple of minutes.  The cable test fine.  If we jack in to the computer it is fine.  If...

Hello all,   I have a customer using ISE 2.6 as a TACACS server for authentication to his C9500.   He would like to have some users to be able to SSH to the C9500 only, while other users have only console access to the C9500. Is there a way to achiev...

Can someone explain to me how the ASR903 platform (specifically running 16.6.2) hashes packets across a LAG that is a member of a bridge domain and how to verify this? I can change the methodology in the running configuration but it seems that it has...