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Forum Posts
Hi Experts,There's a problem that's driving me crazy for the past 2 days.I cant seem to get OSPF to work on one router Site D(see network diagram).It doesn't form any adjacency with the neighbouring router.I have check the area and subnet mask to mak...
Hi everyone,I'm trying to change my office's router (a D-Link) for a Cisco 1841.The current router works for internet access but I need to do some new things which are too tricky to achieve on D-Link's user interface.The network diagram is attached.I...
Hi,I would like to add some resiliant features to the existing LAN. Initially, I proposed to use 2960S switches stacked together (see proposed network architecture 1 below). However, owing to budget constraints, I have amended the proposal to use 2...
Have a question about the Nexus 2248
Hello all, I have a customer who needs IPTV to be implemented in his network. He needs layer2 multicasting. But we got a design recommendation from IPTV people ( my responsibility is justto configure the switches for IPTV) that we cannot i...
Hi all,I am hoping you can help me with a multicasting issue. I am able to stream a video via multicast using the VLC media player. All of the subnets (VLANs) on my local core switch are able to open the stream and play the movie. Anything past the i...
We just purchased 2 new 3750 Switches and 10 2960 switches and we have a Nortel switch for VOIP. The two 3750 switches will be stacked and it will bbe connecting to all the other switches. We have one data vlan and 3 VOIP vlans. Is VTP recommended on...
Resolved! Trunking over Lacp on 3560 switch
I'm trying to run a trunk over a four port Lacp group to a netgear switch form a 3560 but am getting stuck. Everything works fine if I setup a trunk using a single standalone port, and everything works when I use a Lacp group in 'switchport access' m...
Hello, Thanks to jon.marshall's help, I was able to get a secondary ip address on Vlan1 of my router. I have assigned secondary ip addresses to my servers (DNS, WINS) and I can ping them on the old class C subnet and on the new class B subnet. But I...
I have two questions,1. Must portfast be configured on a port that connects to an IP phone?2. when you enabled portfast, it means that the otherside doesnt involved in STP root elections. is it right?thanks,Han
Hi Experts,Today i have checked root bridge of a network topology of our client's. It is showing root bridge as an access layer switch.That topology is like belowaccess --> Distribution --> coreFrom distribution there is reduntant connection to two c...
Resolved! switch stack
Hello All,Please help me on how to stack together 3 3750 or 3650 switches. What are the configuration steps involved.Does the configuration done on master sync by itself to the slaves once the stack is created.Thanks in advance
I have an IE3000 switch and during bootup, it failes to find an IOS so the bootloader prompt appears. a "dir flash:" shows that there is no flash: filesystem. I am having difficulty creating a flash filesystem from bootloader commands.Can anyone prov...
Resolved! Restrict tftp client
I am a newbie to advanced configuration of a switch, so please excuse my ignorance. I would like to restrict where my tftp server can connect to. Can anyone provide me with some guidance. I am using a Catalyst 3750 v2 switch in a lab environment.Than...
Here's the scenario:I have an L3 switch that connects to an ASA then to a router that gets to the internet. The ASA controls all VPN connections so I have a route set on the L3 switch to send connections to a specific IP to the ASA, then the ASA ...
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