Using OSPF over DMVPN
KB ID 0001151 Dtd 03/02/16 Problem This article is a supplement to the earlier one on Setting Up DMVPN. It covers how to use OSPF over the top of DMVPN. This is the topology I’m going to use; As I’ve said (above) this is not a run though on setting up DMVPN, but if you want to spin it up in GNS3, or on the test bench, here’s the DMVPN config; Hub Site configure terminal interface Tunnel10 ip address 192.168.254.1...
Cisco ASA – Reverse Route Injection with EIGRP
KB ID 0001137 Problem I’ve followed your Reverse Route Injection article and its not working? This email dropped in my mailbox a while back As it turns out the article I had written was for OSPF, and this chap was using EIGRP. So I ran it up with EIGRP as well to test. Heres my topology, I want to inject the route for the remote site, into my internal EIGRP routing table. Solution Assuming EIGRP is already setup between the ASA...
Cisco IOS – “configuration not allowed when device is not the primary server for vlan database.”
KB ID 0001127 Problem I was trying to delete a VLAN from a client switch, and this was happening; Core-3560#conf t Enter configuration commands, one per line. End with CNTL/Z. Core-3560(config)#no vlan 30 VTP VLAN configuration not allowed when device is not the primary server for vlan database. Solution Now as far as I was aware there was only one switch, (certainly on this LAN segment anyway). What you need to do is change the VTP...
Cisco IOS – Setting Up DHCP Scopes
KB ID 0001112 I usually only have to do this on very small sites, or occasionally on the test bench. Most of the time we will have a server sat doing DHCP. The procedure below was carried out on a router, but the procedure is the same for a catalyst switch. By default DHCP is disabled, you have to turn it on, then create a ‘dhcp pool.’ Petes-Router(config)#service dhcp Petes-Router(config)#ip dhcp pool DATA-VLAN-10 Then...
Cisco Catalyst Switches – Adding Licenses
KB ID 0001012 Problem I had a load of Cisco Catalyst 3560 switches that needed ‘ipbase’ licenses adding to them today. I’ve messed about with plenty of ASA license upgrades before, but not switches. Solution 1. First thing you need is a Cisco PAK, this may be in an email or turn up in a cardboard envelope. 2. Go to http://www.cisco.com/go/license and log in (if you don’t already have a Cisco CCO account you...
HP and Cisco – VLANs and Trunks Confusion!
KB ID 0000741 Problem When I first started in IT, I went and did my Cisco CCNA. So I learned that to connect Cisco switches and pass VLAN traffic between them, I needed to create a ‘Trunk’ to pass the VLAN traffic. Fast forward a few years, and I now work for an HP reseller. Very early on I came to realise that what HP called a ‘trunk’ was very different from what I had been taught. Below is an article I did a...