Packet Data Interworking Function Overview
▀ Features and Functionality - Licensed Enhanced Feature Support
▄ Cisco ASR 5000 Series Product Overview
OL-22938-02
Figure 126.
Switchover Example for a Common IPv6 Subnet
Other Devices
The following table summarizes how other network devices see two ASR 5000s chassis during online upgrade. The
table below assumes that a SRP-activated loopback address is configured in the source (toward the MS), the destination
(toward the HA), and the AAA contexts (Diameter and RADIUS).
Table 67.
The Chassis as seen from Other Network Devices During Upgrade
Network
Entity
Consideration in Two-Chassis Configuration
L3 switch
(MS ~
PDIF)
This L3 switch sees two chassis as a single entity. Only the physical port in the switch changes due to the
switchover operation by G-ARP. The rest of the ASR 5000 information (IP address and MAC address) remain the
same.
L3 switch
(PDIF ~
HA)
This L3 switch sees two chassis as a single entity. Only the physical port in the switch changes due to the
switchover operation by G-ARP. The rest of the ASR 5000 information (IP address and MAC address) remains the
same.
Diameter
Server
The MS sees two PDIFs as the same entity. However, upon switchover the SCTP connection is disconnected and
then a new SCTP connection with ASR 5000 is established immediately.If an L3 switch exists between the PDIF
and Diameter server, it sees two chassis as a single entity. Only the physical port in the switch changes due to the
switchover operation by IPv6 Unsolicited Neighbor Advertisement. The rest of the ASR 5000 information (IP
address and MAC address) remains the same.
RADIUS
Server
This L3 switch sees these two chassis as a single entity. Only the physical port in the switch changes due to the
switchover operation by G-ARP. The rest of the chassis information (IP address and MAC address) remains the
same.If there should be an L3 switch between the PDIF and a RADIUS server, it sees two chassis as a single
entity. Only the physical port in the switch changes due to the switchover operation by G-ARP, and the rest of the
ASR 5000 information (IP address and MAC address) remains the same.
Summary of Contents for ASR 5000 Series
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