I have a 2960-X stack with 4 switches in a stack configuration. I have one touch via SFP (te1/0/1) to my core and was wondering if i could setup a second touch to my core switch from the last switch in the stack te4/0/1 for redundancy? If so how woul...
Hello, I have a Dell EqualLogic PS4210 storage array and a Dell R730 server attached to a Cisco SG200 50 port smart switch. Using vsphere vcenter I configured the host and the ports on the array, but I can't seem to get the ports on the switch confi...
I am having an issue with TCP resets occuring at a company site that recently had new equipment deployed. It seems TLS enabled apps on Android devices are being odd. They appear to timeout and not load content but a Windows 10 PC accesses the actual ...
Dear Experts, I there any command to check that how many HSRP groups a cisco 2900 router support ?
2 questions, actually: 1. Which port is which? 2. Why am I seeing ten gig ports in the switch config? I have "inherited" a stack of 3 3750x-48's. Each one has its own C3KX-NM-1G module with 4 ports. Each C3KX-NM-1G has 2 GLC-SX-MM gbics installed...
There're some options like: perSONAR, OWAMP, Netnorad?. About the last one - it's a tool that was created by Facebook engineering to monitor their DC. The best thing about Netnorad is that the tool is able to randomize source port numbers, so the pol...
Hello All, I am trying to to identify issue on network that consist Catalyst 4510R +E , having two L3 Vlan's. 172.28.0.0/16 <<>>10.151.1.0/24 We have application that connecting to a server that reside on 10.151.1.124 tcp port 5080 , and thee issu...
Dear Networkers, We all may have heard that with IGMP snooping feature enabled and without some special configuration(Querier, mroute...), one switch connecting to the source won't forward packets to another switch with receiver there in the same V...
Hello Experts, We have a few remote sites with dedicated internet access (mostly 1 Mbps up/down). We have configured GRE tunnels back to the HQ. In each location, we have maximum two users with Internet access which will use the same internet connect...
Hello, I have som problem with DHCP snooping working with DAI. Can anyone explain to me, why I am getting those invalid ARP req? ARP inspection is configured like this: Source Mac Validation : EnabledDestination Mac Validation : DisabledIP Addre...
hi, I have a few questions on multicast show output. I am running in Dense mode and need to understand few things from the out put below. This is from one of the routers in the tree which is neither source not connected to receiver. R4#sh ip mro...
Hello, I try to do a SPAN on my Cisco Nexus 7009 (6.2(16) N7K-SUP2 / N7K-F248XP-25). I monitor a source interface Po3(20G) to a destination E4/24 (1G). I don't have more 1Gbit/s traffic on my port-channel, and i don't carre if the traffic is drop. ...
Hi Experts, I have a Gigabit Interface on Cisco 3850 switch connected to the MPLS Router Gigabit interface which is of Cisco 1900 series. I need help is setting the bandwidth value on the switch interface. I am seeing the below result, when trying ...
Hello, In my work we distrubted the switches as :2 Core Switch ---> 10 DS switches ---> 80 Edge switches My question is: Where to apply "switchport trunk allowed vlans", is it better to apply it on core, DS or both ? Thanks
hi all, all what i need to know is if i got 20 switches and a lot of departments and VOIP is included, How many vlan's gonna be created and in which way????? Please tell me the best solution for this quiz... and please give m...
