I was looking for information on running IPv6 in VRF on the Catalyst 3k platform and there wasn’t much information available. I tried running IPv6 in VRF on Catalyst 3560 with correct SDM profile but got this error message: Switch(config-vrf)#address-family
Catalyst 3750 IPv6 ACL Limitations
I recently ran into some limitations of IPv6 ACLs on the Catalyst 3750 platform. I had developed an ACL to protect from receiving traffic from unwanted address ranges such as ::, ::1, ::FFFF:0:0/96. The first address is the unspecified address,
Why fast IGP timers aren’t always beneficial
Introduction When tuning your IGP of choice, the first thing people look at is usually the hello and dead interval. This is a flawed logic, it is true that it can help in certain cases but convergence consists of much
Cisco updates the Catalyst 2960 – Catalyst 2960-X and Catalyst 2960-XR
The Catalyst 2960 is a very common switch in any environment that has Cisco devices. A couple of years ago the 2960 got stacking via the 2960-S model. It also got the ability to do static routes which was a
Catalyst QoS – A deeper look at the egress queues
I’ve done a post earlier on Catalyst QoS. That described how to configure the QoS features on the Catalyst but I didn’t describe in detail how the buffers work on the Catalyst platform. In this post I will go into
Catalyst QoS
I’m back studying and I have already booked a new lab date. I won’t make an announcement until I get back. This is to keep a bit of the pressure off from taking the lab. The last couple of days
Don’t forget ip routing on switches
Yesterday I did a vol3 lab and one of the tasks was to enable EIGRP on a couple of the switches. I had enabled EIGRP, however I was not getting any routes installed in the routing table. Look at the
What can my interface do? – Show interface capabilities
Want an easy way to find out what speeds your interface supports? Or what encapsulation it supports? Then show interface capabilites is the command you want. Lets look at an sample output: Switch#sh int gi0/1 capabilities GigabitEthernet0/1 Model: WS-C3560X-24 Type: