360 MDS Orbit MCR/ECR Technical Manual MDS 05-6632A01, Rev. F
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Monitoring
Navigate to Services--> DDNS Service--> Status
Status - Indicates whether the service is enabled/running.
Update State- Current state of DDNS update operation.
Update failure reason – A message indicating the reason for a failed DDNS update.
Update Timestamp – The timestamp of last update.
Using CLI
> show services ddns
services ddns status update-state success
services ddns status update-failure-reason ""
services ddns status update-timestamp 2013-01-01T07:43:00+00:00
VRRP – Virtual Router Redundancy Protocol 3.8.24
Understanding
VRRP is a method of setting up multiple routers to provide redundant routing capability. It is defined in
the IETF RFC5798. In VRRP, a group of physical routers are configured similarly with VRRP settings
and together they act as one virtual router on the network. Only one physical router is negotiated as the
Master router at a time; the remaining routers act as Backup until it has been determined that the Master
has gone offline. This failover mechanism is automatic and built into VRRP. The group collectively uses
the same Virtual IP (VIP), but it is only active on the Master at any given time. When failover occurs, the
next negotiated router becomes the Master and assumes the VIP. This provides reliable network
connectivity and simplifies configuration of hosts on the network. The hosts need to be configured to
communicate to only one router IP address, the VIP, and whichever physical router is currently
designated as the Master will have that VIP address assigned to its interface.
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