Switching

Hi All, So recently I'm working on a project configuring the network and the issue of BPDU guard came up during security discussions. The network I'm configuring is layer 3 based and spanning tree is not running at all. There are a few layer 2 switc...

Hello everyone I hope someone can help me I just picked a used 4506 switch but it only boots to rommon after I give it a boot command it will boot.  I have tried to modify the boot variable but it doesn't seem to want to change. Any help would be hel...

I have been trying to get our new Nexus 3172T switch working with non-Cisco SFP+ modules.  In particular I have tried a Huawei SFP-10GBase-LR module and a Twinax SFP-10GBASE-CX1 module.  Both of these work fine in our Cisco C2960S switch, but are rej...

Hi, I need an expert answer . I already  know control/data plane differences b/w them.  1) What operational benefits vpc  offers  that vss can not? Under what scenario separating control planes in architecture is better than keeping one? when failu...

Hi there we have 2 new 2960X switches that are installed. we are installing 3 fire panels and using a cable attach them to the switches. we keep getting this error on any port that we try %LINK-3-UPDOWN: Interface GigabitEthernet1/0/14, changed sta...

Hi All, At our office we have 4 Stack Switches, Details Below: CORE-STACK#sh ver | i Model number Model number : WS-C3750V2-48PS-SModel number : WS-C3750V2-48PS-SModel number : WS-C3750-48PS-SModel number : WS-C3750-48PS-S And Current IOS is : COR...

2 Router 2 Switch 2 PC config.  PC A AND B -> R1 OKPC A > B OKR1 -> R2 OKR1 -> Lo0 OK I'm guessing its an issue with the route table. Any help appreciated. Here are the router configshostname r1!!!enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1!!!!!!!...

I would like to create a QoS marking policy that re-marks packet to CS5 if the inbound traffic is SIP *and* if it is marked CS3 when it comes in.  I would have expected the configuration listed below will work.  I only found out when I tried to apply...

hello dears; can you help to open some ports like: 25, 69, 21, 20, 53, 80, and so on cisco 800 series routers. very urgent!!1

Hi,We've got two 4500-X as VSS configured and 3750-X as Access Switches. We want to use IPTV Multicast in this Network. The Core is configured as PIM Multicast Router in Sparse-Dense Mode and the Access Switches are snooping for IGMP Pakets. After co...

Hi,  I am adding VPC to a nexus deployment this weekend,unfortunately some new 2k switches haven't arrived so I will not be able to create a FEX , portchannel etc for the equipment on the other floor of the data centre.   So I'm stuck with two stan...