<p>Can anyone please confirm it to me that it is right to say that, when calculating a subnet mask, the point where we borrow bits from the host portion in order to form new subnets we use the formula <strong>2 to the power of n - 2 </strong>for clas...
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Forum Posts
<p>I have a 3845 with a WIC-D-9ESW-POE module. I had a CISCO VoIP phone configured to fa 0/1/0 and it stopped working. I currently have an amber light constantly lit on fa 0/1/p without anything connected and with or without the por being shutdown....
<p>why switch should be in transparant mode for create vlan between 1005 to 4094 , why it is not supported in server mode</p>
<p>How dhcp snooping works? Can any one provide any sudy material for dhcp snooping?</p>
Hi every body! If dhcp server receives a dhcprelease message, it will will return the ip address to the pool. But not all the time, a client would be able send dhcp release. for example, a note book moving from one one cell to another cell assuming e...
What's the best practice for Stackwise regarding priorities?1. Manually specify Master and Second Master or2. Specify Master but left the rest of members with the same lower priorities
I am pretty new to network designs and would like to ask for expert's advise.We currently have 1 Internet connection going in and out and would like to have another Internet link to another provider.My goal is simple, If link1 goes down, link2 could ...
Hi every body! I have this fictious scenario. There are two hosts h1 and h2 and a server on a same subnet application 1 = udp port 45 application 2= udp port 46 server running these two applications h1 using udp port 50 for appli 1. h2bbusi...
Could someone confirm me that in Packet Tracer5 Proxy ARP is enabled for routers and L3 switches and as well that Proxy ARP cannot be disabled?
HI every body!I have few questions:1)In HSRP, one router is chosen as active while the other is chosen as standby, all the rest would be in listening state. What about VRRP?In vrrp, one router is chosen as master,are all the rest chosen as back up r...
Resolved! dhcp snooping and option 82
Hi every body!Here is what my book says:" you can also configure the switch to use dhcp option 82, the dhcp relay agent information option,which is described in rfc 3046. when a dhcp request in intercepted on an untrusted port,the switch adds its own...
Resolved! dhcp lease
Hi every body! Let say host gets an ip address from dhcp server with lease=20 days.Let say the host is unplugged , will dhcp server reserve the ip address for 20 days?thanks a lot!
Resolved! UUFB and/or UUMB
Looking for real world use of these features.UUFB -unknown unicast flood blockingUUMB -unknown multicast flood blockingWhen a new device initially connects to a switch port, the devices MAC address is unknown so by default the switch MUST add this ne...
Hi,Please advice and suggest ....I have 4-sites all connected with each other.** Site A is connected with Site B withTwo physical links 10MB and 15MB** Site A is connected with Site C withTwo physical links 8MB and 10MB** Site A is connected with Sit...
HI every body! how do we configure router or L3 switch to behave as dhcp relay agent?thanks a lot!
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