Hello, I am trying to figure out how to get IPv6 prefix delegation back working on a C1111-4P that I have for testing. It has a WAN int g0/0/0 connected to residential Comcast, and VLAN 1 and 20 which have prefixes delegated. Everything was working f...
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Hello. My company that I work for currently does not use IPv6 in our organization. We currently only use IPv4. During our annual penetration test last month, the pentesters were able to reply to IPv6 DHCPv6 requests to successfully hijack DNS for ...
I used this addressing but in my project my teacher asked me where I got the ipv6 addressing from.Do you think this addressing is wrong?
Hello everyone,Unfortunately I have a problem again.I have two ISR 1100 routers which are connected to the Internet with a separate CG522-E (which does passthrough).The CG522-E is a type of modem.I have configured a GRE ipv6 tunnel on both ISRs throu...
Hello. My company that I work for currently does not use IPv6 in our organization. We currently only use IPv4. During our annual penetration test last month, the pentesters were able to install a IPv6 rogue DHCP server into our network successfull...
Hi,wondering if someone here can help me to understand this: why would I still need #ipv6 address autoconfig if I already have #ipv6 address dhcp on the interface? shouldn't #ipv6 address dhcp be enough for the endpoint device to obtain an IP? Thanks
Hello All,I'm a bit confused on the use cases for this and whether they can be used interchangeably or not. My current configuration is legacy to me for Stateful IPv6 DHCP and includes the following configuration:ipv6 nd prefix default no-autoconfigi...
Hi,My customer has an IS-IS Level 1 and Level 2 domain.They asked if a domain border router that receives an IS-IS Level-2 SRv6 Locator TLV can propagate it to their Level-1 domain.Scenario:Topo : Level-1 router (Router-A) --- Level-1/2 router (Rout...
Hi, I'm trying to setting up a leaf and spine archictecture not using ACI or any other SDN system for lab purpose. I like to use IPv6 as underlay routed protocol. In the documentation I look the author did not used IPv6 in his documentation. He prop...
I would like to set interface g0/0 as relay agent. I make my network in IPv6 and I cannot find the command 'ipv6 dhcp relay...' in Cisco Router 2901. Of course, I am in interface configuration mode. Could anyone help me with that? Thanks.
Hi guys, I'm having trouble configurating the OSPF for ipv6.It happens that all my router have lesser networks that it supposed to have.command lines as below, same goes to another 5 more routersR1>enableR1#config termEnter configuration commands, on...
If I ping tools.cisco.com it is successful via ipv4:ROUTER# ping tools.cisco.comType escape sequence to abort.Sending 5, 100-byte ICMP Echos to 173.37.145.8, timeout is 2 seconds:!!!!!Success rate is 100 percent (5/5), round-trip min/avg/max = 62/62/...
Hello,I have been learning to work with NAT64 recently and I wanted to try configure the following topology (see attached image). I would like to ask if anyone could help me with the configuration and whether it is possible to route in this network s...
I have issues with IPv6 network working intermittently on Cisco ASA firewall, connectivity works for a few hours and then stops working on the inside network.IPv6 addresses have been statically assigned to outside and inside interfaces, excerpt from ...
Hello,I’m encountering a challenge with IPv6 communication over trunk interfaces in Packet Tracer, specifically when using VLANs.ContextIn my lab setup, I’m using two Catalyst 3650 switches (simulated in Packet Tracer) connected via GigabitEthernet1/...
