Free Network Posts

Here is sample basic IPv4 & IPv6(OSPFv3) Open Shortest Path First (OSPF) configuration between 2 Huawei Routers with MD5 authentication. Fig1. RouterA Configuration: Configure physical interface <RouterA>interface 100GE6/0/0 <RouterA>description Connection to RouterB <RouterA>undo shutdown <RouterA>eth-trunk 1 <RouterA>undo lldp enable <RouterA>undo dcn 2. Configure the Eth-Trunk IPv4/IPv6 address <RouterA>interface Eth-Trunk1 <RouterA>description Eth-Trunk to RouterB <RouterA>ipv6 enable <RouterA>ip address 192.168.10.1 255.255.255.252 <RouterA>ipv6 address fdfe:13bb:8abc:a00:8::2a/127 <RouterA>mode lacp-static 3. Configure the OSPF (IPv4) process (with optional parameters) <RouterA>ospf 8888 router-id 172.16.1.1 <RouterA>bfd all-interfaces min-tx-interval…

Huawei

Here is sample tutorial on how to configure External Border Gateway Protocol (EBGP) between Huawei Router and another router. I will focus on the configuration of the Huawei router (RouterA). Fig.1.1 Procedure: 1. Configure the Loopback IP address a. Enter system view command: system-view <RouterA>system-view Enter system view, return user view with return command. <RouterA>interface LoopBack0 <RouterA>description RouterA Loopback0 <RouterA>ip address 172.16.1.1 255.255.255.255 <RouterA>quit Verify: <RouterA>display current-configuration interface LoopBack 0 2. Configure the P2P(point to point) IP, we will assume…

Huawei

  General/Overall: admin show inventory chassis admin show inventory all admin show inventory rack admin show environment all admin show environment alarms admin show diag admin show diag chassis admin show hw-module fpd location all admin show environment trace admin show platform admin show platform summary location all show pfm location all show inventory trace error show shelfmgr trace show controllers i2c server trace Power Supply: admin show inventory power-supply admin show power history rack <0-1> admin show diag power-supply…

Cisco

Here’s the sample configuration for setting up the management port for different router platforms.Assuming we have this IP configuration:RSP0/RE0 Physical IP : 10.10.10.98/24RSP1/RE1 Physical IP: 10.10.10.99/24 Virtual IP: 10.10.10.100/24 Gateway: 10.10.10.1/24 Note: It is advisable to connect the management plane connectivity to another network separate from data/voice network. Steps Cisco IOS-XR Cisco NX-OS Juniper OS Huawei Create VRF #vrf management#vrf management description MNGMT#vrf management address-family ipv4 unicast N/A #set system management-instance#set routing-instances mgmt_junos description MNGMT #ip vpn-instance managementdescription MNGMTipv4-family Configure…

Cisco Huawei Juniper

Scenario:2 physical interfaces bundled together (port-channel) and associated in the same vlan. Tested in:Cisco NexusJuniper EX Series Steps Cisco Juniper Configure 2 physical interfaces interface Ethernet1/1description Server Link#1switchportswitchport access vlan 888channel-group 99 mode activeno shutdown interface Ethernet2/1description Server Link#2switchportswitchport access vlan 888channel-group 99 mode activeno shutdown #set interfaces xe-0/0/0 description ” Server Link#1 “#set interfaces xe-0/0/0 gigether-options 802.3ad ae99 #set interfaces xe-1/0/0 description ” Server Link#2 “#set interfaces xe-1/0/0 gigether-options 802.3ad ae99 Configure the port-channel interface port-channel99description Server Port-channelswitchportswitchport access…

Cisco Juniper

This is a sample steps of migrating IP configuration from physical interface to bundle interface. Take note that this may result service impact during the migration as the existing interface need to be shutdown and re-configure. Remember to shift your traffic prior with the maintenance. Existing Config: freenetwork@MX1-re0> show configuration interfaces et-0/0/1 description “Link to Switch1”; unit 0 { family inet { address 192.168.0.1/24; } family inet6 { address fdf8:d3f5:1a47:bc09::1/64; } Fig.1 Shutdown the physical interface and remove existing configuration…

Juniper

Objective: To separate management traffic from data/customer traffic in your Huawei Routers Preferably, Data and Management are into 2 separate network domains. Pre-requisite: UTP cables (for each MPU management port in case for switchover) are connected to a network switch to access the OOB management gateway To go configuration mode: system-view To preview configuration change before commiting display configuration candidate * * Management IP Configuration* *  a. Configure the vpn instance for management ip vpn-instance <vpn instance name> description <description> ipv4-family b. Set…

Huawei

Transmission Control Protocol (TCP) – is a connection-oriented communications protocol that is used to ensure reliable transmission of packets between computing devices in a network. User Datagram Protocol (UDP) – is a connection-less communications protocol that is used especially for time-sensitive and low latency transmissions across the network. Here’s a table of comparison: Parameter TCP UDP Protocol connection-oriented connection-less Header Size 20 bytes Static header 8 bytes Checksum Compulsory Optional Overhead Heavy as it needs 3 packets to setup a…

Networking

uRPF or Unicast Reverse Path Forwarding is a security feature/tool that help verifies reachability of source address in packets being forwarded. It can prevents malicious and spoofing attacks as it will perform forwarding table lookup on the source IP address. – it as defined in RFC3704 – it follows RFC2827 for ingress filtering. –  it relies on the CEF (Cisco Express Forwarding) or FIB table to perform lookups. – preferably implemented at the network edge facing internet, customers and servers…

Juniper

uRPF or Unicast Reverse Path Forwarding is a security feature/tool that help verifies reachability of source address in packets being forwarded. It can prevents malicious and spoofing attacks as it will perform forwarding table lookup on the source IP address. – it as defined in RFC3704 – it follows RFC2827 for ingress filtering. –  it relies on the CEF (Cisco Express Forwarding) or FIB table to perform lookups. – preferably implemented at the network edge facing internet, customers and servers…

Cisco