IPv6

I configured ISATAP between two routers.[Server cisco3845 ver 15.1(4)M12a]interface Tunnel4 no ip address no ip redirects ipv6 address 2001:22:33::/64 eui-64 ipv6 enable ipv6 nd cache expire 10 no ipv6 nd ra suppress tunnel source Loopback0 tunnel mo...

I am trying to get an IPv6 block for my organization from ARIN and I am trying to understand what I need. I will need enough addressing for minimum 2 sites. Production and DR.  So would I request a /48 and a /44? I am reading that a /48 will only wor...

Hello,In order to deploy IPv6 on an infrastructure I realize different labs.The objective of one of my labs is to set up a DHCPv6 relay on a cisco 2921 router to see how it reacts with the distribution of a prefix delegation.In the documentation I re...

Dear Folks,did anybody know something about this message:MESZ: %SISF-3-INTERNAL: Internal error, unkn drop reason 24 -Process= "SISF switcher", ipl= 0, pid= 411-Traceback= 555938z 1511FD8z 14EB3F0z 1501018z 1502A7Cz 1502E54z 1515E08z 1515FBCz 2F20A04...

How can I configure CISCO Router CGR1120 to all node's address is formed by an specific prefix + node's EUI64, as example below: Prefix: fa75:4433:4433:1010/64 Node 1: EUI-64 = 10-23-4f-4a-00-00-10-1e             IPv6 = fa75:4433:4433:1010:1023:4f4a:...

Hello,I've a cisco 2901 with 15.7(3)M2 with a vdsl modul connected to a german Provider (deutsche Telekom). Technically everything is fine, but I've a problem with convergence when my router reboots and/or my dsl line is flapping.They use ppp and I u...

I have alot of logs in my routers stating that ipv6 nd has exceeded the cache limit.I'm trying to find any relevant information about IP-IPV6_ND-4-WARNING_CACHE_LIMIT_HIT but there are non to find.The logs indicates cache limit problem with several i...

Hello.  I am trying to configure DHCPv6 on my router for two private development vlans.My dns servers are offsite and there is no IPv6 other than on my subnets.How do I configure the dns-server in my IPv6 pool?For example, my config (IP Addresses cha...

Hello I have a laboratory with a pfsense firewall as a gateway and 2 cisco routers with ospf connecting each other and a switch each one.I have a public IPV4 assigned to the external firewall interface and 192.168.1.1 to the internal nic. One cisco r...

HiI have configured DHCPv6-PD on my switch and it is working well. Now i want to collect the accounting for prefix allocate so i can know when a prefix was allocated and to whom MAC it was allocate to.  here is my aaa config aaa new-modelaaa group se...

Hello, guys, I am using cisco packet tracer I used for configuration all ipv6 and I have faced problem in frame relay I configured it but still does not work I will upload the packet.   plz, help thank you. 

Hello everyone I'm trying to get my frame-relay working from router 1 to the router internet, I have added frame-relay maps for both according to the IP address, and also added the frame relay connection in the cloud itself, yet I am not able to ping...