Cisco Switching/Routing :: ME 3400 - VTP Support
Sep 13, 2010
We purchased ME 3400 switch and trying to implement it. But its quite surprising in the ME3400 configuration guide that the switch does not support VTP. When I checked in Feature navigator under feature "VTP" i could see ME3400 supports VTP. But when i get into CLI of ME3400, i am not getting any option of configuring VTP. I could see in some sites VMPS is supported in ME3400.
I would like to confirm the following:
1. Does VTP support present in ME3400 or not? If not, what would be the reason that it is not included in ME3400.
2. If not what is the alternative.
Network is already running VTP of around 30 switches.
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Sep 27, 2012
I have a problem at a place where 5 ME3400 switches are connected in a straight line. I can't do much about the topology of that place, but the problem is they are all DHCP Snooping, but uni cast replies from the dhcp server further up the hierarchy gets eaten by the first switch! I can't really see why it not only inspects in and whines about it not being for itself - it then drops the message.
What have we done wrong (apart from the actual layout of that place, which I can't really change)?
Sep 28 13:49:29: DHCP_SNOOPING: received new DHCP packet from input interface (GigabitEthernet0/1)
Sep 28 13:49:29: DHCP_SNOOPING: process new DHCP packet, message type: DHCPOFFER, input interface: Gi0/1, MAC da: 7444.012d.debd, MAC sa: 0013.1a4a.65c7, IP da: XX.YY.186.7, IP sa: XX.YY.186.1, DHCP ciaddr: 0.0.0.0, DHCP yiaddr: XX.YY.186.7, DHCP siaddr: 0.0.0.0, DHCP giaddr: 0.0.0.0, DHCP chaddr: 7444.012d.debd
Sep 28 13:49:29: DHCP_SNOOPING: binary dump of option 82, length: 20 data:
[Code] ......
It really should just send it on, as with any uni cast not on the switch itself - it should go out Gi0/2 really. Why isn't it?
[core] -- [sw1] -- [sw2] -- [sw3] -- [sw4] -- [sw5]
All the trunks are trusted, DAI is on (I've tried shutting it off, as well), port-security is used but it's actually not dying on the switch having the client computer, but the first one in the chain with dhcp snooping.
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[code]....
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