irongerma.blogg.se

1. #Cisco router on a stick with nat pro
2. #Cisco router on a stick with nat software
3. #Cisco router on a stick with nat mac

We now see that the source is translated to 193.10.0.254. Ip nat inside source static INSIDE_LOCAL INSIDE_GLOBAL ip nat inside source static 192.168.1.11 193.10.0.254 We can also do a static NAT and choose what the inside global address should be.

The return packet comes in and the destination address is translated. We can see this when weĭebug ip nat detail. Translated from inside global to inside local address. So when traffic is coming back in the outside interface the destination is When we are doing static NAT there is a bidirectional translation Traffic sourcing from the inside local address 192.168.1.11 will be translated

#Cisco router on a stick with nat pro

Pro Inside global Inside local Outside local Outside global Ip nat inside source static INSIDE_LOCAL interface OUTSIDE_INTERFACE ip nat inside source static 192.168.1.11 interface f0/1 The most basic NAT we can do is a 1:1 static NAT where the inside local address is Translation is done when traffic is going from an inside interface to an The LAN interface(s) are the inside interfaces and the WAN interface(s) are the outside When using NAT we need to define inside and outside interfaces (except if NVI is used). Same as the inside local depending on if NAT is used or not. Outside global – The IP address as seen by other hosts on the Internet, this may be the Side is running public IP addresses on the inside (a valid design). Is not running NAT the outside local and global may be the same. Outside local – This is the address on the LAN of the other side.

This is the address after translation has occurred. Inside global address – This is the address as seen by other hosts on the Internet. Inside local address – This is the address as seen on the LAN (inside) before We are referencing when talking about the IP address. Since the address is changed along the way we need to describe which address When we are talking about NAT we have some terminology that is commonly used. Want to do some learning for myself as well. There is a lack of good documents out there describing NAT and I

#Cisco router on a stick with nat mac

A router refers to the target IP address instead of its MAC address, thus it generally provides more functionality than mere packet routing, such as IP address assignment (DHCP) and firewall filtering.Įxcept for the three major differences concerning layer 3 switch vs router, some other aspects are summarized in the following chart to help distinguish layer 3 switch from router.This post will describe how NAT works. Working Principle – Layer 3 switch looks at the MAC address of the destination host and sends the frame only to that recipient. Moreover, routers were devices that connected the LAN to the WAN and switches were just LAN devices. While a router have more options like SDH, SONET, E1/T1 etc. Interfaces - Another difference regarding a layer 3 switch vs router is that a Layer 3 switch is limited in interfaces it supported (usually just Ethernet for RJ45 and single mode/multimode fiber). So layer 3 switch is most used to support routing between VLANs. Additionally, designed specifically for use on intranets, a layer 3 switch usually has no WAN ports and features a traditional router usually gets.

#Cisco router on a stick with nat software

The hardware inside a layer 3 switch blends that of traditional switches and routers, improving some of a router’s software logic with integrated circuit hardware to offer better performance for LANs. Hardware - The key difference between layer 3 switch vs router lies in the hardware. Like traditional router, a layer 3 switch can also be configured to support routing protocols such as RIP, OSPF, and EIGRP. Layer 3 switches are thus able to segregate ports into separate VLANs and perform the routing between them. layer 3 switch enable packets switching by inspecting both their IP addresses and their MAC addresses. Layer 3 Switch Vs Router: Similarities and DifferencesĪ layer 3 switch is both a switch and a router: it can be regarded as a router with multiple Ethernet ports and with switching function.