Posted on in voice
You might run into a situation where you have multiple PRIs or T1s for outbound calling on your Cisco Access Server (Cisco AS5350 or other model). In order to ensure that all outbound calls are using both circuits, you need to configure two outbound dial peers. In order for the …
Posted on in Networking
If you're like me, you've probably run into situations where it makes sense to run a DHCP server on your router. You may have noticed that a reboot of the router causes the DHCP bindings to be lost. When this happens, all of your hosts will likely receive new DHCP …
Posted on in Networking
Last week I mentioned that I was working on a Quality of Service (QoS) project. For those who are curious about QoS and how to get it working, here are the resources I found most useful. These resources are mostly Cisco specific, but the principles should be applicable in many …
Posted on in Networking
I decided I needed a standardized set of Quality of Service classification access-lists for some work I'm doing. Check out my Cisco QoS Classification ACLs page and let me know what you think.
If you have any ideas on how I can improve the lists, leave a comment here or …
Posted on in Networking
This week I tried upgrading a Cisco Catalyst 2960 to the newest software release — 12.2(46)SE. The upgrade went just fine, but I noticed that the monitoring software was throwing SNMP errors.
In case you don't know much about SNMP, an ifIndex identifies a specific interface on a …
Posted on in networking
I've been working on a standardized list of access lists to use in conjunction with QoS on Cisco routers and switches. I've tried to adhere as closely as possible to the Cisco QOS Baseline (pdf).
As I refine the ACLs, I'll keep this page up to date. If you have …
Posted on in Networking
I recently had the pleasure of working on a client's Cisco 2600 series router that had not been used in quite some time. Access lists on the vty lines and a misconfigured con line meant I was locked out. In a situation like this, the only way to gain access …
Posted on in Networking
By default, service set identifiers (SSIDs) configured on a Cisco integrated services router are not broadcast. This means that if you want to configure a client to use the wireless network, you'll have to manually enter the SSID in the client configuration. This isn't a bad thing, but it is …
Posted on in Networking
As you might recall, I had previously taken umbrage with Cisco's inability to forward a range of ports to a particular host. Many readers have offered suggestions and links to other documents around the Internet offering various solutions, but none of them really sat quite right with me.
In hindsight …
Posted on in Networking
Error: The image in the archive which would be used to upgrade
Error: system number 1 does not support the same feature set.
I just got this error message while upgrading a Cisco Catalyst 3560 from 12.2(35)SE5 to 12.2(44)SE. The older version was IP …
