Hello, We are trying to setup a /48 IPv6 in our 3750 but doesnt seem to like it and doesnt pass it and stops it all pinging and working on the internet but works internally for some strange reason. Any ideas? i have asked our uplink supplier to check...
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Resolved! Packet tracer 16.3.1
The objective of this packet tracer is troubleshooting. I've found five problems with the ip route configuration for all the three routers. Now I can ping from any host to the other LANs over IPv4. But there is an issue with pinging from PC1 to the o...
Hello, I have an issue on a Cisco Catalyst 9300L with IPv6 and VRF.When i try to create a static route, the switch tells me that IPv6 routing table does not exist :Switch(config)#ipv6 route vrf test 1::1/64 2::2% IPv6 routing table test does not exis...
Hello,On an 800 series router I have the following error in the logs :%IPV6_ND-4-OLPFXCON: Prefix 2001:db8:aaaa:0012::/64 advertised in RA on Dialer0 has been previously configured on another interfaceThe router configuration is as follows :interface...
Hi guys! I just finished my exam not too long ago. We were told to use OSPF for IPV4 and allow a PC inside our network to be able to ping to a web server inside an Internet cluster that contains a ipv4 server and an ipv6 server. As for the ipv6 part,...
Hello, I can't get an ipv6 address from a router set up as a dhcpv6 server. I've got both a stateful and stateless server setup for the router, and I don't know what I'm doing wrong. I'm trying to get an address for the PC to the far left. I get an i...
https://www.ietf.org/id/draft-ietf-bess-ipv6-only-pe-design-00.html#name-test-3-e2e-ipv6-only-pe-ce-5.3. Test-3 E2E IPv6-Only PE-CE, Global Table over IPv6-Only Core (4PE), 4to6 Softwire ________ IPv6-Only _...
Hello, imagine we have 2 mail relay that need to communicate and both are dual stack. What happens if the ipv6 communication is down between both end ? does the sender will try the ipv4 after a delay ?
Internet Service Providers (ISPs) assign users large IPv6 blocks (~/64) containing millions of IPv6 addresses. If a user was to ping a server using 2 different IPv6 addresses from his given IPv6 block, would the server be able to trace the IPs back t...
I'm preparing for CCNP Encor and I was reading about the interface commands to add a secondary IPV4 address and multiple IPv6 address. I do not think any use for IPv4, but could be mistaken. How about IPv6? Do you create a router on a stick? Is ther...
Resolved! ipv6 address on subinterfaces
Hello, R1's gig1 is connected with r2's gig1.R1-------------R2 I have created subinterfaces on R1 and R2. and assigned IPv6 addresses to newly created subinterfaces.R1ipv6 unicast-routingRouter#show run int g1.2interface GigabitEthernet1.2encapsulati...
I have a very basic question about IPv6 prefix. Taking a very simple example about prefix notation:"2001:db8:abcd:0012::0/64"My question is: Do we call the whole thing under quote as prefix or just the value after back slash?In general term, I unders...
Resolved! EIGRP snmp and IPv6 Adresses
Hi! we have just setup some tunnels using IPv6 only and now I am trying to monitor those tunnels using snmp.Unfortunately pysnmp as well as check_eigrp (perl) are not so easy to use with IPv6.So I am trying to work myself into this topic.I am using s...
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...
Hello,I'm running into a problem with our Cisco ASR-1002HX and ASR-1006X. I have a mix of Juniper and Cisco routers all configured exclusively with IPv6. All of our routers are in the same ospfv3 area 0. We are required to configure OSPF authenticati...
