Author Archives: Robert
Be micro-ambitious
Target setting Continue reading
Juniper SRX 110
This week I bought an Juniper SRX 110. This device will help me to get more acquainted with the Junos cli structure. From a Cisco perspective this box is slightly wider than a Cisco 8xx series router. But maintaining 1U … Continue reading
Policy Based Routing
Policy-Based routing is a neat trick to tweak traffic streams. For Policy Based Routing to work you will the following; – Define traffic stream in an access-list. – Write down a policy. – Determine the inbound interface. First use an … Continue reading
Error-Disable
When a network port encounters an error. This port is automatically shutdown to ensure network stability. When error-disable is enabled. The predefined error are as follows; arp-inspection bpduguard channel-misconfig dhcp-rate-limit gbic-invalid l2ptguard link-flap mac-limit link-monitor-failure loopback oam-remote-failure pagp-flap port-mode-failure psecure-violation … Continue reading
SSH error on cisco router
Enabling SSH on a Cisco router is not enough to guarantee SSH is working. Enabling ssh version 2.0 on a routers is as straight forward as;. >ip ssh version 1-2 I surely recommend the use of version 2, because ssh … Continue reading
DHCP Helper address
Which source ip address is used when relaying a dhcp-request ? Continue reading
GNS3 caveat – port status
Creating a network lab in GNS3 is reliefs on budget. But there are some drawbacks. One of which is port status. I have noticed that using GNS3 in combination with iouyap results in some unexpected behavior. Once a topology is made … Continue reading
