Cisco Cisco Expressway 维护手册
Expressway-C
Expressway-E
Peer 1 address
Enter the FQDN of the
Expressway-E.
Expressway-E.
Note that if you use an IP
address (not recommended),
that address must be present
in the Expressway-E server
certificate.
address (not recommended),
that address must be present
in the Expressway-E server
certificate.
Not applicable
Peer 2...6 address
Enter the FQDNs of additional
peers if it is a cluster of
Expressway-Es.
peers if it is a cluster of
Expressway-Es.
Not applicable
4. Click Create zone.
Server certificate requirements for Unified Communications
Cisco Unified Communications Manager certificates
The two Cisco Unified Communications Manager certificates that are significant for Mobile and Remote
Access are the CallManager certificate and the tomcat certificate. These are automatically installed on the
Cisco Unified Communications Manager and by default they are self-signed and have the same common
name (CN).
Access are the CallManager certificate and the tomcat certificate. These are automatically installed on the
Cisco Unified Communications Manager and by default they are self-signed and have the same common
name (CN).
We recommend using externally-signed certificates for best end-to-end security between external endpoints
and internal endpoints. However, if you do use self-signed certificates, the two certificates must have
different common names. This is because the Expressway does not allow two self-signed certificates with
the same CN. If the CallManager and tomcat self-signed certs have the same CN in the Expressway's
trusted CA list, then it can only trust one of them. This means that either secure HTTP or secure
SIP, between Expressway-C and Cisco Unified Communications Manager, will fail.
and internal endpoints. However, if you do use self-signed certificates, the two certificates must have
different common names. This is because the Expressway does not allow two self-signed certificates with
the same CN. If the CallManager and tomcat self-signed certs have the same CN in the Expressway's
trusted CA list, then it can only trust one of them. This means that either secure HTTP or secure
SIP, between Expressway-C and Cisco Unified Communications Manager, will fail.
Expressway certificates
The Expressway certificate signing request (CSR) tool prompts for and incorporates the relevant subject
alternate name (SAN) entries as appropriate for the Unified Communications features that are supported on
that Expressway.
alternate name (SAN) entries as appropriate for the Unified Communications features that are supported on
that Expressway.
The following table shows which CSR alternative name elements apply to which Unified Communications
features:
features:
CSR SAN element
Mobile and remote access
Jabber Guest
XMPP federation
Unified CM registrations domains
ü
(Expressway-E only)
X
X
XMPP federation domains
X
X
ü
(Expressway-E only)
IM and Presence chat node aliases
(federated group chat)
(federated group chat)
X
X
ü
Unified CM phone security profile names
ü
(Expressway-C only)
X
X
Cisco Expressway Administrator Guide (X8.5.2)
Page 61 of 403
Unified Communications
Unified Communications prerequisites