Questions tagged [ipv6]

For questions about Internet Protocol version 6 (IPv6); as specified in RFC 8200.

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How to break apart an IPv6 /56 6rd delegated prefix from ISP into multiple /64 VLANs for use with SLAAC EUI-64? [Cisco]

I have CenturyLink Internet service, and they have a 6RD IPv6 deployment where they hand out an IPv6 delegated prefix /56 block to me and allow me to use it as I wish. My Cisco ISR router receives the ...
OpenHorseSoftware's user avatar
7 votes
0 answers
1k views

HSRP IPv6 configuration

Looking at the Cisco documentation for HSRP IPv6 configuration I noticed the use of 'standby 1 ipv6 autoconfig'. interface FastEthernet0/0 no ip address duplex auto speed auto ipv6 address 2020:...
dcrearer's user avatar
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4 votes
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PVLANs/Port isolation in IPv6 networks

We're currently using port isolation to prevent communication between computers on the same vlan and use client isolation on our guest wifi. The reason for having this enabled is to prevent unwanted ...
ForJ9's user avatar
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2 votes
0 answers
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RPL: questions on routing mechanism

I'm studying RPL and two questions came to my mind: 1: Both in storing and non-storing modes, if a node wants to send a packet to another node via P2P communication paradigm, then how does the ...
Luigi2405's user avatar
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2 votes
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How is the source link-layer address in IPv6 router solicitation(RS) messages used?

When I analyze the router solicitation(RS) messages, then they contain the MAC address of the sending host. How does the router use this MAC address seen in ICMPv6 message? Does it simply use it as a ...
Martin's user avatar
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1 vote
1 answer
496 views

MTU for WireGuard over IPv6

What would be the optional MTU for a virtual WireGuard link transmitting over IPv6 to avoid unnecessary fragmentation? Here is how I approached the calculation: [IPv6 Header] - 40 bytes [Some IPv6 ...
Moss Richardson's user avatar
1 vote
0 answers
91 views

How do I set up IPv6 multicast over an MPLS carrier?

I'm setting up an MPLS carrier with VPNs in GNS3, using Cisco 7200 routers. Exact version I'm using is C7200-ADVIPSERVICESK9-M Version 15.2(4)S5, but I'm willing to upgrade/change if that's needed. On ...
Thomas's user avatar
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1 vote
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Why cant my network send packages but piv6 pings go through?

I have the following network: My routing is as follows: Device configuration for ISP: Building configuration... Current configuration : 1388 bytes ! version 15.1 no service timestamps log datetime ...
ayy_chemixd's user avatar
1 vote
0 answers
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Can a Neighbor Advertisement response packet trigger the transition from STALE to DELAY?

I think the title is pretty descriptive. I cannot seem to find anything in the standard about what kind of packets could trigger the transition from the state STALE to the state DELAY, in the ...
Fillipos Christou's user avatar
1 vote
0 answers
151 views

Using IPv6 6in4 tunnel with multiple VLANs, or LAN Interfaces?

I have a pfSense router, and I've setup a Hurricane 6in4 IPv6 tunnel by following this guide: http://thirdinternet.com/wp-content/uploads/2017/11/Configure-6in4-Tunnel-in-pfSense.pdf It all seems to ...
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1 vote
0 answers
279 views

Subnet delegated prefix on SRX

I configured a Juniper SRX firewall to receive IPv6 prefix from upstream router: family inet6 { dhcpv6-client { client-type statefull; client-ia-...
Lingfeng Xiong's user avatar
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iputils ping: -N (IPv6 node info query): purpose, usage, examples

What is the purpose of IPv6 node info query and how is used in ping-N ...?
pevik's user avatar
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How to configure ipv6 static route for cisco router

I've tried but i don't know if i got it right. So per the picture, If i want to set a static route from R1 to SW1 subnet The command should be ipv6 route 2001:d79:1:345::/64 2001:d79:1:13::
Nghi Dac Tran's user avatar
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IPv6 - link-locals mess

I am implementing IPv6 in my network and for now I have my own routable IPv6 /48 block, Cisco routers, Cisco switches, OSPF between them and several hosts. Its all working fine, but there is something ...
kab00m's user avatar
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