Option1: If the current line cards installed support your PC/laptop’s 1GE UTP port, then you can install SFP-1000BaseT(SFP-T) transceiver directly to be used as the observing port. Fig.1 interface <interface name> port-mirroring inbound port-mirroring outbound port-mirroring to observe-index 1<1-255> interface <interface name> port-observing observe-index <1-255> Sample Configuration: Objective: To further do analysis on all traffic going to the Web server by port mirroring the interface going to the server. Port to mirror: Gi2/0/0 Port to observe:Gi1/0/0 <HW-Router>sys Enter system…
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PAT or Port Address Translation or also known as NAT Overloading is like a modified form of dynamic NAT where multiple inside local addresses are translated to single inside global IP address. It is the most popular form of NAT as the setup is the same what we use on our home connectivity as your Internet Service Provider (ISP) usually will only provide you 1 public IP to communicate with their internet router. Just remember the word many-to-one mapping. Objective:…
Here are the basic configuration on implementing different types of Network Address Translation (NAT) on Cisco Routers. Fig.1 Static NAT (1-to-1 Translation) (Objective: to translate PC-1 private IP of 192.168.0.2 to public IP 200.200.200.3) Configuration: Router1 Main Static NAT configuration: ip nat inside source static <Inside local IP> <Inside global IP> Sample Config: Router1(config)# ip nat inside source static 192.168.0.2 200.200.200.3 interface FastEthernet0/0 description Connection to PC-1 ip address 192.168.0.1 255.255.255.0 ip nat inside interface FastEthernet0/1 description Connection to Router2…
Network Address Translation or NAT, is a process of converting or translating a set of IP addresses to another set of IP addresses. Benefits of NAT: Solve IPv4 exhaustion issue by conserving IP address space. Cost effective as can connect multiple devices to Internet without to purchase multiple public IP Enhance security by hiding the internal devices on a private network behind single public IP Simplifies network reconfiguration as internal IP are hidden from external networks Easy to manage and…
Here is a simple tutorial on tracing access users on Huawei Router. There are few ways to trace access-user based on the given information and most common are circuit-id, ip-address,ipv6-address and mac-address. [~Huawei]trace access-user object 1 ? access-mode The access mode calling-number The Calling Number ce-vlan The CE VLAN ID circuit-id User’s circuit-id interface The interface ip-address The IP address ipv6-address IPv6 address mac-address The MAC address pe-vlan The PE VLAN ID remote-id User’s remote-id tunnel-id User Tunnel ID user-name…
Here are the sample steps on finding the interface where the host is connected based on IP address or MAC address on Cisco Catalyst L3 Switch running on Cisco IOS Scenario 1: IP address is given, find which interface it is connected IP address: 192.168.0.35 a. Find the routing entry for the IP to know where it is connected show ip route <IP> SWITCH1#show ip route 192.168.0.35 Routing entry for 192.168.0.32/29 Known via “connected”, distance 0, metric 0 (connected, via…
Here are the sample steps on finding the interface where the host is connected based on IP address or MAC address on Juniper Routers. Scenario 1: IP address is given, find which interface it is connected IP address: 192.168.15.6 a. Find the routing entry for the IP to know where it is connected show route <IP> darwin@JUNIPER-re0> show route 192.168.15.6 inet.0: 3 destinations, 6 routes (3321 active, 0 holddown, 3 hidden) + = Active Route, – = Last Active, *…
Here are the sample steps on finding the interface where the host is connected based on IP address or MAC address on Cisco Switch Nexus 7000 series running in Nexus OS. Scenario 1: IP address is given, find which interface it is connected IP address: 192.168.15.6 a. Find the routing entry for the IP to know where it is connected show ip route <IP> NEXUS7000# show ip route 192.168.15.6 IP Route Table for VRF “default” ‘*’ denotes best ucast next-hop…
Note: This steps are based on bridge domain/VPLS setup on Cisco ASR 9000 running Cisco IOS-XR. For normal routed interfaces, you can find it using the command: show arp <interface> Scenario 1: IP address is given, find which interface it is connected IP address: 192.168.15.6 a. Find the routing entry for the IP to know where it is connected show route <IP> RP/0/RSP1/CPU0:ASR9K#show route 192.168.15.6 Routing entry for 192.168.15.0/29 Known via “connected”, distance 0, metric 0 (connected) Installed May 16…
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