Major release 12 of Cisco's IOS software
13
votes
3answers
237 views
Backing up Cisco router configuration - including ssh keys
We have some Cisco 2821, 2921 and 1921 routers in our shop. I can back up and restore the configurations by copying out or in the startup-config file, but what about the keys for ssh? I don't want ...
0
votes
0answers
72 views
“No auto-summary” default for EIGRP in IOS 15 [closed]
This is not a question per se, more of a warning.
Lately I had some issues on a C6506 switch. It was running IOS version 12.2(33)SXi2. Cisco TAC advised me to upgrade it to version 15, which I did ...
14
votes
2answers
305 views
Writing text to the log
Is it possible to write an arbitrary line of text to the log of a Cisco IOS 12.x device?
I should like to be able to put in markers when fetching configs via TFTP and I would like to be able to have ...
8
votes
3answers
136 views
1 router, 1 internet connection/IP - multiple VRFs using the same ISP gateway
My knowledge of inter-VRF routing isn't the best.
I have one public IP. The public Internet and its quad 0 is on the default VRF....
Then I have a Guest_VRF and a corporate_VRF which would both need ...
3
votes
4answers
83 views
Cisco 2600 series router logging a lot of “Memory allocation failed” errors
We are getting the below two error messages randomly on a 2600 series router. Syslog shows the router has been fine up until a few days ago. Would a reboot most likely cure the issue or is it most ...
8
votes
6answers
136 views
DHCP relay problem on interfaces secondary network
A secondary network was configured on an interface of a Cisco 2621 router and the ip helper-address commands put in place but no clients of that secondary network could pull DHCP addresses. We swapped ...
8
votes
2answers
122 views
4
votes
1answer
82 views
SNMP ENGINE process has high CPU usage on a few 6500 chassis
Four of our 6500 chassis have a constant high CPU usage from the SNMP ENGINE process. Three of the chassis run around 20-30% constantly and the fourth is running around 50% constantly. We have about ...
5
votes
2answers
104 views
Moving internally allocated VLANs
A VLAN I need to use is allocated for internal usage (as per vlan internal allocation policy ascending). I can't (easily) move the traffic over to another VLAN for various practical reasons.
I was ...
8
votes
1answer
91 views
Configuring HSRP on Nexus OS
How do you configure HSRP on a Nexus 7000 series switch?
I know in IOS the commands are in the interface configuration, for example:
switch-a#config t
switch-a(config)#interface g1/0/1
...
9
votes
3answers
292 views
How to find the port a device is connected to, based on IP, on a Cisco Catalyst switch
On a Cisco Catalyst switch, I need to find what port an end device is connected to.
I have the IP address/host name.
How do I quickly find the port?
7
votes
2answers
153 views
Why does my Cisco 6509 BGP table use two entries in my TCAM?
I have a problem on my Cisco 6509, each entry in my BGP table occupies two entries in the TCAM.
If I show capacity forwarding, I see MPLS entries in L3 forwarding resources.
But, I do not use MPLS on ...
6
votes
2answers
136 views
Netflow differences between IOS 12.2 and 15.1
Has anyone upgraded their cisco routers from 12.2 to 15.1? I'm curious to know what kind of changes were made to netflow. Most specifically, I'd like to know how (if at all) the CPU utilization ...
5
votes
3answers
123 views
Using Fabric on a Cisco device : “Line has invalid autocommand”
I wasn't sure where to ask this but it seems to be something on the switch side so I thought I would start here first.
I am working on a little project to automate updates to config files in bulk ...
5
votes
3answers
158 views
Cisco-configuration syntax highlighting for TextMate/Sublime Text
I would like to have syntax highlighting while perusing my configs - does anybody know of a good Cisco IOS syntax highlighting bundle for TextMate or Sublime Text?
7
votes
2answers
82 views
TCP Client / Server in Cisco EEM 3.0
I'm attempting to set up client / server sockets in Cisco EEM 3.0 TCL with IOS version 12.4(24)T8 (this was recently upgraded to determine whether the problem was EEM ver).
I have the following two ...
9
votes
5answers
371 views
What causes total output drops on a cisco switch interface?
I have an HP c7000 blade chassis which contains Cisco 3120X and Cisco 3120G switches running ios 12.2(58)SE1. The blades themselves are very lightly loaded yet many interfaces on different blade ...
