Name: Cisco ASR 5000 Series
Brand: Cisco
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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.

Cisco ASR 5000 Series User Manual

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