These are the some commands being used when performing network change or maintenance, depending on the features or services being run in the network. Typically, this is very useful in verification, troubleshooting and comparison between before and after the change. Commands Description Category screen-length 0 temporary display none split screen (useful in collecting info without pause) Basic Command display health display usage information of system resources Resources display cpu-usage display usage of CPU Resources display alarm all display all alarms…
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Here are the sample VLAN configuration and commands comparing Cisco Nexus and Huawei switches. VLAN Creation: Cisco Huawei configure system-view vlan 88name VLAN 88 vlan 88name VLAN88 Access Interfaces: Cisco Huawei interface Ethernet1/1description Connection to Server1switchportswitchport access vlan 88no shutdown interface GigabitEthernet1/1/1description Connection to Server1port link-type accessport default vlan 88undo shutdown Trunk Interfaces: Cisco Huawei interface Ethernet2/1description Connect to Switch2switchportswitchport mode trunkswitchport trunk allowed vlan 10,20no shutdown interface GigabitEthernet2/1/1description Connect to Switch2port link-type trunkport trunk allow-pass vlan 10 20undo shutdown…
Filter-Based Forwarding (FBF) or (for some vendor is also called Policy Based Routing (PBR)) is a simple method to route IP traffic to different interfaces on the basis of Layer 3 parameters (e.g. source or destination IP) or Layer 4 parameters (source or destination ports). Example: Objective: – to configure R1 to forward traffic originating from HostX under 10.10.1.0/24 to use ISP-X to reach Server 20.20.20.1 – to configure R1 to forward traffic originating form HostY under 10.20.1.0/24 to use…
RFC or Request for Comments is a publication in a series from the principal technical development and standards-setting bodies for the Internet. It contains technical specifications and organizational for Internet and TCP/IP. It is produced by Internet Engineering Task Force or (IETF). Those members of Internet Society (ISOC) can submit RFCs for consideration. 5 Classifications of RFC which is reviewed by different technical groups. Required Recommended Elective Limited Use Not Recommended 3 Stages of Development or maturity levels based…
IANA or Internet Assigned Numbers Authority is responsible for the global coordination of the DNS Root, IP addressing, and other Internet protocol resources including Autonomous System (AS) numbers used for routing Internet traffic. IANA established the Regional Internet Registries (RIRs) to allocate IP address in geographical regions.There are total of five Regional Internet Registry (RIR) service regions currently. RIR RIR Name Service Region Website Established AFRINIC African Network Coordination Centre Africa https://www.afrinic.net 2005 APNIC Asia-Pacific Network Coordination Centre Asia Pacific,…
Network ports are software defined number that is associated to a network protocol that transmits or receives or transmits communication for a specific application or service. It is used by Transport Layer of IP Suite, e.g. TCP & UDP. A port number is a 16-bit unsigned integer that ranges from 0 to 65535. There are 3 types of network ports. Port Range Port Types Description 0 – 1023 Well-know Ports For common TCP/IP applications (assigned and controlled) 1024 – 49151…
Network ports are software defined number that is associated to a network protocol that transmits or receives or transmits communication for a specific application or service. It is used by Transport Layer of IP Suite, e.g. TCP & UDP. A port number is a 16-bit unsigned integer that ranges from 0 to 65535.There are 3 types of network ports. Port Range Port Types Description 0 – 1023 Well-know Ports For common TCP/IP applications (assigned and controlled) 1024 – 49151 Registered…
Here are sample configuration on resequencing access lists in Cisco Routers for IOS, IOS-XE, IOS-XR and Nexus OS Cisco IOS/IOS-XE a. Show the existing access-list IOS#show access-lists acl_123 Extended IP access list acl_123 10 permit tcp 192.168.10.8 255.255.255.255 192.168.20.5 255.255.255.255 eq 22 20 permit tcp 172.16.0.10.8 255.255.255.255 192.168.20.5 255.255.255.255 eq 22 30 deny ip any any b. Add the new access list before the last deny rule IOS(config)#ip access-list extended acl_123 IOS(config-ext-nacl)#21 permit tcp host 192.168.11.8 host 192.168.20.5 eq 22…
Cisco uses RPL (Route Policy Language) while Huawei uses XPL (Extended Route Policy language). Basically they are the same concept but of course the commands are slightly different, though editing the policy or prefix-set requires vi/vim knowlege. Cisco IOS-XR RPL Huawei NE40E XPL Adding Prefix-Set:prefix-set FNT-Prefixes 192.168.0.0/24, 172.16.0.0/23end-set Adding Prefix-Set:xpl ip-prefix-list FNT-Prefixes192.168.0.0 24,172.16.0.0 23end-list Creating Route Policy:route-policy FNT-EXPORT if (destination in FNT-Prefixes) then prepend as-path 65555 2 endifend-policy Creating Route Policy:xpl route-filter FNT-EXPORT if ip route-destination in FNT-Prefixes then …
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