About AKRobert

AKRobert · 07-10-2025

good morningI have several Cisco 3560-CX 12 and 16 port switches. when using IPv4 we simply used the command "show ip device tracking all" to find the IP for each device when troubleshooting but there does not seem to be an IPv6 equivalent. I found s...

AKRobert · 07-01-2025

Hello. We have been trying to migrate to IPv6 and dhcpv6. So far we are having dhcp issue. I have a router running iOS-xe and it has the production vlan on it and it’s configured like this for the vlan interface interface Vlan1000 description User VL...

AKRobert · 02-29-2024

We need to be able to stipulate the criteria for what is an acceptable password. The VG450 runs IOS XE systems support this with the following command: aaa common-criteria policy PASSWORD_POLICYmin-length 15max-length 127numeric-count 1upper-case 1lo...

AKRobert · 06-19-2020

HelloI have hundreds of switches all running the same base config and we have hundreds of Nortel VoIP phones 1120E model phones. Other than having to use LLDP we didn't have any problems until around January. When we would introduce a new phone we wo...

AKRobert · 07-10-2025

so on my L2 3560 i would create my policy to track and then for each vlan i want to snoop just make a vlan interface that simply says snoop this vlan? that seems super easy. lol

AKRobert · 07-10-2025

so youre using the snooping just as a way to collect IPs.I know on our switches we are doing DHCP Snooping and Dynamic ARP inspection in conjunction. i had not realized i suppose that i could use just the IPv6 snooping only to collect the IPs and not...

AKRobert · 07-10-2025

we are using DHCP snooping for IPv4 and i think once we have some weirdness ironed out with IPv6 we will likely extend snooping to IPv6 also. I do agree that a phased upgrade to 9200s is probably the best long term solution, im starting to think the ...

AKRobert · 07-10-2025

so i did find the solution to this.there was a device-tracking policy that blocked UDP and NDP. once i pulled out that policy devices came up and started getting IPs

AKRobert · 07-02-2025

ok. so now that im in front of the computer i can maybe explain this better.I have a Cisco 3850 acting as my router connected to it i have 2 Layer 2 Cisco Nexus devices (NX-OS) and connected to those i have several Cisco 3850 Fiber switches acting a...

Member Since	‎06-19-2020 11:00 AM
Date Last Visited	‎11-19-2025 09:24 AM
Posts	10
Total Helpful Votes Received	1

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IPv6 Implementation on Cisco 3560-CX 12 port switch (Layer 2)

IPv6 dhcpv6 not getting ip

VG 320 common criteria unavailable

POE not working properly on 3rd party VoIP phones

Re: IPv6 Implementation on Cisco 3560-CX 12 port switch (Layer 2)

Re: IPv6 Implementation on Cisco 3560-CX 12 port switch (Layer 2)

Re: IPv6 Implementation on Cisco 3560-CX 12 port switch (Layer 2)

Re: IPv6 dhcpv6 not getting ip

Re: IPv6 dhcpv6 not getting ip