Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼
Maintenance > Tools > Network utilities > DNS lookup
) to
check which domain name server (DNS server) is responding to a request for a particular hostname.
Caching DNS records
To improve performance, DNS lookups may be cached. This cache is flushed automatically whenever the
DNS configuration is changed.
DNS configuration is changed.
You can also force the cache to be flushed by clicking Flush DNS cache.
Configuring Quality of Service settings
The
Quality of Service
(QoS) page (
System > Quality of Service
) is used to configure QoS options for
outbound traffic from the VCS.
This allows the network administrator to tag all signaling and media packets flowing through the VCS with
one specific QoS tag and hence provide the ability to prioritize video traffic over normal data traffic.
Management traffic, for example SNMP messages, is not tagged.
one specific QoS tag and hence provide the ability to prioritize video traffic over normal data traffic.
Management traffic, for example SNMP messages, is not tagged.
Supported mechanisms
The VCS supports the DiffServ (Differentiated Services) mechanism which puts the specified Tag value in
the TOS (Type Of Service) field of the IPv4 header or TC (Traffic Class) field of the IPv6 header.
the TOS (Type Of Service) field of the IPv4 header or TC (Traffic Class) field of the IPv6 header.
Cisco VCS Administrator Guide (X8.1)
Page 33 of 504
Network and system settings
Network settings