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Interface and Hardware Component Configuration Guide, Cisco IOS XE Release 3S - IPv6 Automatic 6to4 Tunnels [Cisco IOS XE 3S] An automatic 6to4 tunnel allows isolated IPv6 domains to be connected over an IPv4 network to remote IPv6 networks. The key difference between automatic 6to4 tunnels and manually configured tunnels is that the tunnel is not point-to-point; it is point-to-multipoint. In automatic 6to4 tunnels, routers are not configured in pairs because they treat the IPv4 infrastructure as a virtual nonbroadcast multiaccess (NBMA) link.

The IPv4 address embedded in the IPv6 address is used to find the other end of the automatic tunnel. An automatic 6to4 tunnel may be configured on a border router in an isolated IPv6 network, which creates a tunnel on a per-packet basis to a border router in another IPv6 network over an IPv4 infrastructure. The tunnel destination is determined by the IPv4 address of the border router extracted from the IPv6 address that starts with the prefix 2002::/16, where the format is 2002:border-router-IPv4-address ::/48. IPv6 works on 3550s. I was able to get IPv6 to work on my 3550's. I got the info from this link: Mailing List Archive: Re: strange ipv6 problems on 3550 SVI3550s apparently do not support IPv6 in hardware, only in software. I was only able to get IPv6 working by sending IPv6 traffic over GRE tunnels using IPv4 end points. Virtual Support Day Best Practices Virtual Networking June 2012. Configuring VMDirectPath I/O pass-through devices on a VMware ESX or VMware ESXi host.

PCI Passthrough with PCIe devices behind a non-ACS switch in vSphere. Configuring a GRE Tunnel over IPsec with OSPF. Introduction Normal IP Security (IPsec) configurations cannot transfer routing protocols, such as Enhanced Interior Gateway Routing Protocol (EIGRP) and Open Shortest Path First (OSPF), or non-IP traffic, such as Internetwork Packet Exchange (IPX) and AppleTalk. This document illustrates how to route between different networks that use a routing protocol and non-IP traffic with IPsec. This example uses generic routing encapsulation (GRE) in order to accomplish routing between the different networks. Refer to PIX/ASA 7.x and later : VPN/IPsec with OSPF Configuration Example for more information on how to configure for a VPN/IPsec with Open Shortest Path First (OSPF) without a GRE tunnel on Cisco PIX Security Appliance Software Version 7.x or Cisco Adaptive Security Appliance (ASA). Refer to Configuring IPsec Router-to-Router Hub and Spoke with Communication Between the Spokes for information on how to configure a hub and spoke IPsec design between three routers.

Prerequisites Requirements. Difference between GRE and IPSEC.. - 23243. I would say GRE over IPSEC is the correct terminology. The term IPSEC over GRE is really GRE over IPSEC or "transport mode". The question is which one appears as the "outer" header. Lets take the case of a simple GRE tunnel. You have IP over GRE. Where the original IP header is encapsulated into GRE. In the case of GRE over IPSEC, you actually have two different modes, "Tunnel Mode" and "Transport Mode". Tunnel Mode Hence the term, GRE over IPSEC. Transport Mode Hence the term, IPSEC over GRE. Hope this helps. Brian. OSPF over IPSEC??? | VPN | Cisco Support Community | 6001 | 11329406. Marco, Not really a bug in the common sense, pasting the description. It explains what you see and why people in the past might have seen a different behavior. :-) CSCtq94342 - Self originated, multicast traffic handling through IPsec tunnel This is a documentation bug only.Symptom:A note needs to be added into configuration guide to specify that:As of release 12.4(9)T multicast traffic originated from the box will be encapsulated into IPsec if proxy identities allow this.Further descriptionA typical use case for this is when router is sourcing OSPF packets and traffic selectors for IPsec allows OSPF packets (protocol number 89, group & of release 12.4(9)T those packets will be put into the tunnel and encrypted.

Catalyst 3750-X and 3560-X Switch Software Configuration Guide, Release 12.2(55)SE - Configuring HSRP [Cisco Catalyst 3750-X Series Switches] Configuring HSRP This chapter describes how to use Hot Standby Router Protocol (HSRP) on the Catalyst 3750-X or 3560-X switch to provide routing redundancy for routing IP traffic without being dependent on the availability of any single router.Unless otherwise noted, the term switch refers to a Catalyst 3750-X or 3560-X standalone switch and to a Catalyst 3750-X switch stack. You can also use a version of HSRP in Layer 2 mode to configure a redundant command switch to take over cluster management if the cluster command switch fails. For more information about clustering, see Chapter 6, “Clustering Switches” and see the Getting Started with Cisco Network Assistant , available on

If the switch is running the LAN base feature set, only Layer 2 mode is supported. For complete syntax and usage information for the commands used in this chapter, see these documents: This chapter consists of these sections: Understanding HSRP Note Figure 43-1 Typical HSRP Configuration HSRP Versions. vCloud Air Documentation Center. Configuring a Virtual Tunnel Interface with IP Security  [IPSec Negotiation/IKE Protocols]

This document provides a sample configuration for a virtual tunnel interface (VTI) with IP Security (IPSec). This configuration uses RIP version 2 routing protocol to propagate routes across the VTI. With a VTI, VPN traffic is forwarded to the IPSec virtual tunnel for encryption and then sent out of the physical interface. This sample configuration also demonstrates the use of Cisco Quality of Service with VTIs. Figure 1 illustrates the network for the sample configuration. Figure 1. Cisco® IPSec VTIs are a new tool that customers can use to configure IPSec-based VPNs between site-to-site devices. With IPSec VTIs, users can provide highly secure connectivity for site-to-site VPNs and can be combined with Cisco AVVID (Architecture for Voice, Video and Integrated Data) to deliver converged voice, video, and data over IP networks. • Provides a routable interface---Cisco IOS Software IPSec VTIs can support all types of IP routing protocols.

This guide provides the VTI configuration only. ! !

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About your Network Box (GFRG200, GFRG210) - Fiber Help. If you subscribe to the Gigabit Internet package, your package includes a Network Box (GFRG110 or GFRG200). If you subscribe to the Gigabit + TV package, your package includes either a Network Box (GFRG110) and a Storage Box (GFMS100) or a Network+ Box (GFRG210). The Network+ Box provides the same network routing capabilities as a Google Fiber Network Box (GFRG200), and its appearance and dimensions are the same. In addition to network routing functions, the Network+ Box serves as the central storage device for all content that you record from all of your TV Boxes. It provides 2 TB of storage space, which allows you to store up to 500 hours of HD programming, and connects to the TV Boxes using MoCA or Ethernet. You can also store personal media, such as photos, videos, and music on the Network+ Box and play it through your TV and any connected audio system. In this document, "Network Box" refers to either device.

This article describes the Network Box models GFRG200 and GFRG210. . About static IPs for small business - Fiber Help. Static IP addresses An Internet Protocol (IP) address is a unique number assigned to each computer on a network. Just as a street address determines where a letter should be delivered, an IP address identifies computers on the Internet. If your computer is hosting a web server, its IP address is what identifies it to the rest of the Internet. A computer on the Internet can have a static IP address, which means it stays the same over time, or a dynamic IP address, which means the address can change over time. When you sign up for Google Fiber for Small Business, you can choose to have no static IPs (that is, dynamic IPs for all your devices), one static IP, or five static IPs. If you sign up for five static IPs with your Fiber service, you must use your own router. You can see examples of network configurations that use static IPs. When you might need static IPs Most Fiber customers do not need any static IP addresses.

Google Fiber does not offer more than five static IPs. Address via DHCP. Chapter 6: How IPSec Complements MPLS. When the idea of MPLS VPNs was first discussed, there was a strong notion of competition between MPLS VPNs and IPsec VPNs. Many people voiced concern that MPLS VPN technology does not add significant advantages over IPsec VPNs and, indeed, that it is inferior in some respects: by default, MPLS VPNs do not provide confidentiality on the network, for example. Today, there is at least a strong market perception that MPLS VPNs are useful. Indeed, both MPLS VPNs and IPsec VPNs have significant deployments, and that suggests that both types have their benefits, albeit in different scenarios.

The benefits of MPLS VPNs are primarily on the service provider side, where this technology allows highly scalable VPN architectures, with integrated QoS support. We will not engage here in an argument about which of the VPN technologies is better or more suitable for a given network. The first section of this chapter gives an overview of various deployment scenarios of IPsec together with MPLS. Cisco IOS VPN Configuration Guide - Site-to-Site and Extranet VPN Business Scenarios [Cisco 7200 Series Routers] Running OSPF across a PIX/ASA firewall: TTL details. Sharath Samanth has recently asked an interesting question: I have seen the post on running OSPF across a PIX firewall. Since I did not have a PIX, I tested the solution by replacing PIX with a router.I had configured the neighbor statements on both routers, but the OSPF was failing to come up.

The debug indicated that the router emulating PIX was sending time exceeded ICMP to both OSPF-speaking routers.The OSPF hello by default has a TTL of 1 which I think is an issue with this scenario. Is there anything special thats done on PIX to get OSPF working? The answer is quite simple: PIX is not behaving like a router, but rather like a bridge with additional IP features (NAT and traffic filters). It does not decrement the TTL of a transit packet (which could lead to interesting loops if you badly mess up a redundant topology) … and I have to congratulate Sharath for an excellent diagnosis of the problem.

This article is part of You've asked for it series. About your Network Box (GFRG100, GFRG110) - Fiber Help. The Google Fiber Network Box (GFRG110 or GFRG100) connects by Ethernet cable directly to your Fiber Jack. Its dimensions are 7.5" W x 7.5" D x 1.6" H. When it is properly connected, the LED on the front of the Network Box lights up solid blue. If the LED does not light up solid blue about 2 minutes after being connected to power, contact Google Fiber customer support. The Network Box serves as a router, which provides Internet service for your home networks. If you want to add more wired devices, you can connect a gigabit Ethernet switch. As the number of wireless devices connected to the Mini Network Box increases, you might notice performance degradation.

You can manage your network settings, including how to set up your home network and connect your devices, with your user-friendly My Fiber account on the web. If you are comfortable with advanced settings, you can configure the Network Box to provide a gigabit firewall, 2.4 GHz and 5 GHz networks, 3x3 MIMO, and more. PA-POS-OC3 Port Adapter Installation and Configuration - Overview: PA-POS-OC3 Port Adapter Installation and Configuration [Cisco Port Adapters] Identifying Interface Addresses This section describes how to identify the interface address for the PA-POS-OC3 in supported platforms. Interface addresses specify the actual physical location of each interface on a router or switch. The interface on the PA-POS-OC3 installed in a router or switch maintains the same interface address regardless of whether other port adapters are installed or removed.

However, when you move a port adapter to a different slot, the first number in the interface address changes to reflect the new port adapter slot number. The interface on a PA-POS-OC3 installed in a VIP2 or VIP4 maintains the same address regardless of whether other interface processors are installed or removed. However, when you move a VIP2 or VIP4 to a different interface processor slot, the interface processor slot number changes to reflect the new interface processor slot. 10 things you shouldn't virtualize. Virtualization provides a solid core of benefits — cost savings, system consolidation, better use of resources, and improved administrative capabilities — but it's important to remember that supporting the goals of the business are the reason IT departments exist in the first place.

Virtualizing everything as far as the eye can see without analyzing the consequences is like what comedian Chris Rock said about driving a car with your feet: You can do it, but that doesn't make it a good idea. The first step in any virtualization strategy should involve envisioning disaster recovery if you put all your eggs in the proverbial basket. Picture how you would need to proceed if your entire environment were down — network devices, Active Directory domain controllers, email servers, etc. What if you've set up circular dependencies that will lock you out of your own systems? In my experience, some things just aren't a good fit for a virtual environment. 2: Systems that require extreme performance. UniFi AP AC Lite QSG. UTM Support of virtualization. Efficient Server Virtualization with VMware vSphere | Dell.

Use your own router - Fiber Help. IP VPN vs MPLS: Top 5 Factors to Consider. TR InstantPerformance.


Zabbix. Win Svr 2016 Tech Preview. VMWare ESXi/vSphere. SQL. AWS. DaaS. Enterprise Systems Integration. Tangible Instruments - Arpeggio. Add Two-Factor Authentication To Your Website with Google Authenticator and Twilio SMS. Question #129223 : Questions : Odoo Server (MOVED TO GITHUB) Untitled.