Conditional Route Origination in OSPF Domain
Cisco device uses “default-information originate” statement to generate a default route in OSPF domain. There are two ways to originate default route by using this command: 1) When you configure...
View ArticleBasic HSRP Configuration Example On Cisco IOS XR
The Hot Standby Router Protocol (HSRP) is an IP routing redundancy protocol designed to allow for transparent failover at the first-hop IP router. HSRP provides high network availability, because it......
View ArticleHow to Troubleshoot OSPFv3 Frame-Relay?
Open Shortest Path First (OSPFv3) is a link state protocol that supports IPv6 and as well as IPv4. OSPF version 3 differs from OSPF version 2 for IPv4 as some changes... Read more »
View ArticleOSPFv3 vs. OSPFv2 Routing Protocol
This article outlines few comparisons of OSPFv3 and OSPFv2 Routing Protocol. OSPFv3 has few similarities with that of IPv4 version i.e. OSPFv2 in some ways, like Packet Type, Interface Type,... Read...
View ArticleSteps to Configure Static NAT with Route-maps
A static NAT (Network Address Translation) configuration creates a simple translation entry in the NAT table, translating a particular local address to a specific global address and vice versa. These...
View ArticleShow ip route
To display the current state of the routing table, use the show ip route command in user EXEC or privileged EXEC mode. The show ip route command is a powerful... Read more »
View ArticleCisco ACL In and Out Questions
Q1: When to apply ACL in or out? I am having a hard time understanding when to apply an ACL on in or out of the interface. When do I want to apply the... Read more »
View ArticleHow to Change the External Interface IP Address on ASA?
What shall we need to do while Changing the External Interface IP Address on ASA? What common issues shall we pay attention to after changing the IP address on the... Read more »
View ArticleHow to Establish Communications between VLANs?
In this article we will discuss how to establish communications between VLANs, as well as how to configure the networks. Notes: More about the virtual LANs, Physical LANs and briefly... Read more »
View ArticleHow to Configure SNMP on Cisco IOS-based Router/Switch?
SNMP is an application-layer protocol that provides a message format for communication between SNMP managers and agents. The SNMP manager is the system used to control and monitors the activities of...
View ArticleEIGRP on a Cisco ASA Firewall Configuration
The Cisco Adaptive Security Appliance is an integrated security equipment that can perform a variety of functions like firewall, intrusion prevention, VPN, content security, unified communications, and...
View ArticleHow to Configure site-to-site IPSEC VPN on Cisco ASA using IKEv2?
The scenario of configuring site-to-site VPN between two Cisco Adaptive Security Appliances is often used by companies that have more than one geographical location sharing the same resources,...
View ArticleDHCP Relay on the Nexus7000/NXOS Vs. IP Helper on the 6500/IoS
IP helper (now DHCP relay) works differently on the Nexus 7000 than on the Cisco 6500. The N7K imposes a VACL to filter local DHCP broadcast traffic, under the assumption that you’d be using DHCP relay...
View ArticleHow to Activate/Upgrade C3850 IP Base License to IP Services?
“How to upgrade Cisco 3850 LAN base to IP base? or upgraded from IP base image to IP service image?” This is a popular problem that it is often discussed by Cisco 3850 users. Firstly, let’s see what...
View ArticleSomething about the Cisco Wireless APs Supporting Cisco WLC
In this article we collected some problems about the Cisco AP supporting Cisco WLC from Cisco users. AP working/connecting with WLC is a common issue that discussed by network users. Do you have the...
View ArticleFlexStack vs. FlexStack-Plus
What Are FlexStack and FlexStack-Plus? FlexStack is the name of the stacking technology used by the Cisco Catalyst 2960-S Series of fixed Ethernet switches. FlexStack is specific to Cisco Catalyst...
View ArticleWhat is Audio Video Bridging?
Do you notice that there is a new feature in Cisco 3850 and Cisco 3650? The new feature is that the IEEE802.1 Audio Video Bridging standard is supported on select Catalyst 3850 & 3650 platforms....
View ArticleTop Commands for Verifying Cisco Switch Network Status and Operational State
How to use correctly to maintain your Cisco network? When your network consists of multiple devices connected at a distance, how can you test connections and keep on top of network performance? It’s...
View ArticlePoE vs. PoE+. The Main Features Comparison
What is PoE? What is PoE+? PoE vs. PoE+: What’s the difference? These common questions are always being asked by network device buyers. Here we have summarized the main features between PoE and PoE+,...
View Article11 Protocols of IoT You need to know
If you are interested in IoT, do you know those protocols of IoT? As we all know, WiFi, Bluetooth, ZigBee are the communication technologies, but there are also other new selections. Let’s discuss this...
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