Technology and Support

Cisco Catalyst Center - Software Image Update Scripts

Hello,I was wondering whether it is possible to create under Design / CLI Templates customized scripts to verify certain metrics parameters and use those in pre and post software image updates.Thanks. 

WLC 3504 AND APS C9117AXI-A AND AIR-AP1852I-A-K9 CONNECTIVITY PROBLEMS

Hello, good afternoon, colleagues. I have a WLC 3504 and two AP models connected to provide Wi-Fi to my users (C9117AXI-A and AIR-AP1852I-A-K9). The problem is that the APs suddenly stop providing service. My WLC has version 8.10.196.0, and I think i...

CUBE Inbound Dial Peers Matching Criterias

Demystifying Outgoing Call Routing Logic with Webex Calling

In Webex Calling the routing behavior for unknown numbers is controlled by two settings. The enterprise level “Unknown Number Handling” setting and the “Calls to On-Premises Extension” setting at the location level. When an outgoing call is originate...

NAT Reflection with Cisco Secure Firewall and Cisco Expressway

  In Cisco Expressway Series with Single NIC Deployment, the Cisco Expressway Core must be configured to point to the Fully Qualified Domain Name (FQDN) of the Cisco Expressway Edge, this FQDN must be resolved to the Public IP of Cisco Expressway Ed...

Expressway E, MRA, Zones and Search rules

Dear communityZone/Zubzone matching on Expressway, Call processing rules for B2B and regular register endpoint register on Expressway are pretty straight forward (with a few caveats) and layered down on many post and CCO. On the other hand, MRA on Ex...

SIP 180 Ringing Versus SIP 183 Session Progress

SIP 180 Ringing VS SIP 183 Session Progress.Why doesn’t the "SIP 180 Ringing" message require an acknowledgment, while "183 Session Progress" often does using the 100rel/PRACK mechanism?And why do we talk about additional acknowledgments like PRACK i...

Incoming SIP Port in the SIP Security Profile vs the Destination port

The Difference Between the Incoming SIP Port in the SIP Trunk Security Profile and the Destination SIP Port in the SIP Trunk – Two Key Concepts to Distinguish The Difference Between the Incoming SIP Port in the SIP Trunk Security Profile and the Dest...

Deprecated machine type

I am atttempting to run a Linux VM in IOx on a C8200 platform.  The container log shows that it is starting with option:-machine pc-0.13,accel=kvm,usb=off,dump-guest-core=offand complains:2025-10-21T17:11:14.773544Z qemu-kvm: Machine type 'pc-0.13' i...

What is a Dial Peer Group (DPG) in Cisco CUBE and Why Is It Useful?

A DPG (Dial Peer Group) is a Cisco Unified Border Element (CUBE) feature that allows you to statically bind an inbound dial peer to one or more outbound dial peers. This provides more granular call control. It is particularly useful when integrating ...

Do you know this essential EIGRP verification command?

EIGRP is a very interesting distance vector routing protocol that offers advanced options. It is preferably used in certain scenarios such as VPNs, DMVPN, etc.EIGRP exists in two modes of operation: classic and named.Of course, depending on the IP pr...

IE 9320

I have a Cisco Catalyst IE-9320-26S2C. Did a firmware upgrade from 17.12.04 to 17.12.05.Before the upgrade, it said there was no space and asked to delete the files, and now the switch is not coming up.delete /force flash:ie9k-rpboot.17.12.04.SPA.pkg...

Block access to Google Games

We recently implemented a pair of FW1120's with full FTD licensing.  Configuring access control policies to block specific websites and URL categories.One of the categories we have blocked is "games" which does a great job of blocking those websites....

9400 configuration

When configuring the 9400 switch as a core, I notice packet loss in ICMP redirect, broadcast, SW forwarding, and transit traffic due to CPU processes. I investigated whether this model has two types of workloads: software and hardware. I think it can...

Please help if I need upgrade ISSU C9500-48Y4C from 17.3.4 > 17.12.5

I'm not sure if I can upgrade with C9500 model C9500-48Y4C upgrade with ISSU that hardware can support  I found this in Cisco ISSU Compatibility Matrix </platform><platform type="C9500-48Y4C" name="Cisco Catalyst 9500 Switch"><mode type="HA-REMOTE" m...