Manual
Table Of Contents
- Preface
- Introduction
- Process Summary
- Prerequisites
- Run the Service Setup Wizard
- VCS System Configuration
- Routing Configuration
- Pre-search Transforms
- Search Rules
- Task 8: Configuring Transforms
- Task 9: Configuring Local Zone Search Rules
- Task 10: Configuring the Traversal Zone
- Neighboring Between VCS Clusters
- Task 11: Configuring Traversal Zone Search Rules
- Task 12: Configuring the DNS Zone
- Task 13: Configuring DNS Zone Search Rules
- Task 14: Configuring External (Unknown) IP Address Routing
- Endpoint Registration
- System Checks
- Maintenance Routine
- Optional Configuration Tasks
- Appendix 1: Configuration Details
- Appendix 2: DNS Records
- Appendix 3: Firewall and NAT Settings
- Appendix 4: Advanced Network Deployments
- Obtaining Documentation and Submitting a Service Request
- Cisco Legal Information
- Cisco Trademark
System Checks
Zone Status
Go to Status > Zones on both VCS Control and VCS Expressway to check that the traversal zone is Active. You can
also check the zone status in Configuration > Zones >Zones.
If the traversal zone is not active, do the following:
■ Review the traversal zone configuration.
■ Check that the relevant ports are enabled for outbound routing on the NAT and firewall devices located
between the VCS Control and VCS Expressway. See Appendix 3: Firewall and NAT Settings, page 59.
■ Check that the username and password credentials are configured correctly (and match) on VCS Control and
VCS Expressway traversal zones and in the authentication database on the VCS Expressway.
Registration Status
Check that all endpoints which are expected to be registered are actually registered to the relevant VCS. And that
they are registering the expected aliases. All successfully registered endpoints are listed on Status > Registrations >
By device.
If the expected endpoints are not registered, review the following items:
■ The endpoint’s registration configuration. Is it configured to register with the VCS Expressway if located on the
external network / internet, and to register with the VCS Control if located on the internal network?
■ The SIP domains (Task 7: Configuring SIP Domains, page 23).
■ Any registration restriction configuration applied to the VCS (optional, Task 17: Configuring Registration
Restriction Policy (Optional), page 44).
In some cases, home endpoints may fail to register when using SRV records. This can happen if the endpoint uses the
home router for its DNS server, and the router's DNS server software doesn't support SRV records lookup. (Also
applies to the DNS server being used by a PC when Jabber Video is running on it.) If registration failure occurs, do
either of the following:
■ Change the DNS server on the endpoint to use a publicly available DNS server which can resolve SRV record
lookups. For example, Google – 8.8.8.8
■ Change the SIP/H.323 server address on the endpoint to use the FQDN of a node in the VCS cluster and not
the cluster SRV record. So that the device performs an AAAA or A record lookup.
Call Signaling
If calls do not complete, despite the endpoints being successfully registered to a VCS:
■ Review the VCS Control search rule configuration.
■ Review the VCS Expressway search rule configuration.
■ Check the search history page for search attempts and failures (Status > Search history).
■ Check the Event Log for call connection failure reasons (Status > Logs > Event Log).
What To Do Next
When you've completed the system checks and are satisfied that the system is working as expected, create a system
backup and then go on to "Optional Configuration Tasks".
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Cisco VCS Expressway and VCS Control - Basic Configuration Deployment Guide
System Checks