Category: Cisco
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Configuring Cisco Virtual Switch System (VSS) on Cisco Catalyst 4500X Switches.
As part of a network infrastructure upgrade at a client site, I’ll be implementing Cisco VSS (Virtual Switching System). This technology will go a long way to meet some of the stated objectives of this infrastructure upgrade which include : Physical Hardware Redundancy, High Availability achieved by Switch Clustering, Self-healing, Increased bandwidth (10 GB trunk),…
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Configuring Date and Time on a Cisco 3750G Layer 3 Switch.
The lower end of Cisco switches e.g the C3750 Layer 3, do not have a built-in system clock mechanism. As a result, the time needs to be set either manually or by an external ntp time source. The configuration below shows the commands for setting the time on a Cisco 3750 Layer 3 switch using…
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Configuring Windows Server 2012 R2 NIC Teaming with EtherChannel on Cisco 3750G Switch.
Windows Server 2012 R2 built in NIC Teaming code enables link aggregation of multiple network adapters with same speeds for outbound traffic from the host. To take advantage of inbound traffic aggregation, the switch ports will have to be configured for Etherchannel. In the example below, an already configured SwitchIndependent NIC team is converted to…
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Configuring NAT (Network Address Translation) on a Cisco 1921 Router.
These are the steps I would follow to configure NAT (Network Address Translation) on a Cisco 1921 Router. The tool of choice is Putty configured to log the commands. You could use the Cisco IOS context Help to assist with the configuration: 1) Open the Putty application and select the Serial Port Connection Type to…
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Configuring InterVLAN Routing on a Layer 3 Switch and providing DHCP to multiple subnets Part 2
In part 2 of this topic, I will show how to configure the Switch Virtual Interfaces and IP Helper addresses on the Cisco 3750G EMI: L3Switch(config)#interface vlan 20 L3Switch(config-if)# ip address 10.0.2.1 255.255.255.0 (Configure IP Address on the vlan 20 interface) L3Switch(config)# exit It is not necessary to specify an IP Helper address for the…
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Configuring InterVLAN Routing on a Layer 3 Switch and providing DHCP to multiple subnets Part 1
In this series, I would like to post my practical experience in setting up multiple VLANs/subnets and using a Layer 3 switch to route traffic across them. The post will also include my configuration steps enabling the use of a Microsoft-based DHCP Server. This is by no means a treatise on these subjects. A number…
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How to Configure ssh on a Cisco Switch.
Telnet is a widely used protocol for accessing and administering Cisco devices. But this protocol is not exactly secure and transmits data over a network in plain text. Ssh is a secure protocol and it’s best practice to secure your access to all devices. Configuring ssh on most Cisco switch models is a straightforward process.…
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Configuring Policy Based Routing on a Cisco 3750G EMI
So we recently restructured the Company network from a flat network to multiple Vlans. The need has arisen to route traffic for specific vlans through a different ISP for business reasons. This means routing traffic to a path different from the default route configured on the Core switch , which in this case is a…
Chinny Chukwudozie, Cloud Solutions. 