Category: Cisco
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GRE Tunnel Configuration Generic Routing Encapsulation, or GRE, is a tunneling protocol that allows the encapsulation of many different network layer protocols between two endpoints. Packets are sent through a virtual tunnel on a point-to-point link. It is important to understand that GRE tunnels do not encrypt traffic in any…
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A quick guide to setting up a GSM on a ISR using EHWIC-3G-HSPA+7. You must get the data service account from you service provider, in turn you will receive a SIM card that you can install on to the EHWIC and an APN (Access Point Name) required to create a profile.…
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VPN Remote Site over 3G/4G Deployment Guide Validated Cisco Technology design guide – Updated
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A really useful command for unlocking the SIM while in the router. router#sh cell 0/1/0 security Card Holder Verification (CHV1) = Enabled SIM Status = Locked SIM User Operation Required = Enter CHV1 Number of Retries remaining = 3 router#cellular 0/1/0 gsm sim unlock NNNN !!!WARNING: SIM will be unlocked…
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Switched Port Analyzer (SPAN) allows traffic to be replicated to a port from a specified source. The traffic to be replicated can be from physical ports, virtual ports, or VLANs, but you cannot mix source types within a single SPAN session. The most common reason for SPAN to be employed is for packet…
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After many hours trying to sort this one out it would appear that a Riverbed Steelhead can’t easily optimise VC Traffic, as this traffic is already optimised by the Polycom device itself. Sorry, that’s not to say I can’t, but i’d rather not enable the QoS on the Steelhead to solve this problem. The environment:…
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Introduction to HSRP Avoiding HSRP Instability in a Switching Environment with Various Router Platforms Understanding and Troubleshooting HSRP Problems in Catalyst Switch Networks
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A short listing of handy commands used on a regular basis: #show ip interface brief Shows status of the interfaces on the device, including up/down and ip information. #show ip protocol summary Will show you all the routing protocols running on the router #show log Will display the configured log settings…
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A short and simple explanation of VXLAN VXLAN Overview: Cisco Nexus 9000 Series Switches
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The most sure-fire way to do this is to start a command-line session with the router, erase the startup-config and reload the router. The command syntax for that would be: router>en router#write erase router#reload *If you don’t have the login credentials for the router to get in, do this: -Start…
MystaJoneS 