Cisco IOS Broadband High Availability Stateful Switchover [Cisco IOS Software Releases 12.2 SB]

Table Of Contents

Cisco IOS Broadband High Availability Stateful Switchover

Contents

Prerequisites for Cisco IOS Broadband High Availability Stateful Switchover

Restrictions for Cisco IOS Broadband High Availability Stateful Switchover

Information About Cisco IOS Broadband High Availability Stateful Switchover

Feature Design of Cisco IOS Broadband High Availability Stateful Switchover

Supported Broadband Aggregation Protocols

SSO PPPoA

SSO PPPoE

SSO RA-MLPS VPN

Benefits of Cisco IOS Broadband High Availability Stateful Switchover

How to Configure Cisco IOS Broadband High Availability Stateful Switchover

Configuring Subscriber Redundancy Policy for Broadband HA Stateful Switchover

Verifying and Troubleshooting Subscriber Redundancy Policy for Broadband HA Stateful Switchover

Configuration Examples for Cisco IOS Broadband High Availability Stateful Switchover

PPPoX Terminated into an RA-MPLS Network with SSO: Example

Additional References

Related Documents

Standards

MIBs

RFCs

Technical Assistance

Command Reference

clear ppp subscriber statistics

clear pppatm statistics

clear pppoe statistics

debug pppatm redundancy

debug pppoe redundancy

show ccm clients

show ccm queues

show ccm sessions

show ppp subscriber statistics

show pppatm statistics

show pppoe statistics

subscriber redundancy

Feature Information for Cisco IOS Broadband High Availability Stateful Switchover

Cisco IOS Broadband High Availability Stateful Switchover

First Published: December 4, 2006

Last Updated: December 4, 2006

The Cisco IOS Broadband High Availability (HA) Stateful Switchover (SSO) feature provides the capability for dual route processor systems to support stateful switchover of PPPoX sessions and allow applications and features to maintain state while system control and routing protocol execution is transferred between an active and a standby processor.

Finding Feature Information in This Module

Your Cisco IOS software release may not support all of the features documented in this module. To reach links to specific feature documentation in this module and to see a list of the releases in which each feature is supported, use the "Feature Information for Cisco IOS Broadband High Availability Stateful Switchover" section on page 42.

Finding Support Information for Platforms and Cisco IOS and Catalyst OS Software Images

Use Cisco Feature Navigator to find information about platform support and Cisco IOS and Catalyst OS software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

Contents

•Prerequisites for Cisco IOS Broadband High Availability Stateful Switchover

•Restrictions for Cisco IOS Broadband High Availability Stateful Switchover

•Information About Cisco IOS Broadband High Availability Stateful Switchover

•How to Configure Cisco IOS Broadband High Availability Stateful Switchover

•Configuration Examples for Cisco IOS Broadband High Availability Stateful Switchover

•Additional References

•Command Reference

•Feature Information for Cisco IOS Broadband High Availability Stateful Switchover, page 42

Prerequisites for Cisco IOS Broadband High Availability Stateful Switchover

•The Cisco 10000 Series router must be configured with redundant Performance Routing Engine (PRE) modules, that is, dual route processors.

•Cisco IOS Release 12.2(31)SB2 or a later release must be running.

•The Cisco IOS Stateful Switchover and Nonstop Forwarding features must be enabled. For more information on SSO, see the document "Stateful Switchover." For more information on NSF, see the document "Cisco Nonstop Forwarding."

Restrictions for Cisco IOS Broadband High Availability Stateful Switchover

Stateful switchover (SSO) is supported only on Cisco IOS HA network devices.

Information About Cisco IOS Broadband High Availability Stateful Switchover

To configure the Cisco IOS Broadband High Availability Stateful Switchover feature, you should understand the following concepts:

•Feature Design of Cisco IOS Broadband High Availability Stateful Switchover

•Benefits of Cisco IOS Broadband High Availability Stateful Switchover

Feature Design of Cisco IOS Broadband High Availability Stateful Switchover

Prior to the implementation of the Cisco IOS Broadband High Availability Stateful Switchover feature, unplanned control plane and dataplane failures resulted in service outages and network downtime for PPP over various media (PPPoX) sessions. Cisco High Availability features, including SSO, enable network protection by providing fast recovery from such failures. The Cisco IOS Broadband High Availability Stateful Switchover feature eliminates a source of outages by providing for stateful switchover to a standby processor while continuing to forward traffic. SSO protects from hardware or software faults on an active route processor by synchronizing protocol and state information for supported features with a standby route processor, helping to ensure no interruption of sessions or connections if a switchover occurs.

The SSO feature takes advantage of route-processor redundancy by establishing one of the route processors as the active processor, designating the other route processor as the standby processor, and then synchronizing critical state information between them. Following an initial (bulk) synchronization between the two processors, SSO dynamically maintains route processor state information between them. A switchover from the active to the standby processor occurs when the active route processor fails, when it is removed from the networking device, or when it is manually taken down for maintenance. The standby route processor then takes control and becomes the active route processor, preserving the sessions and connections for the supported features. At this time, packet forwarding continues while route convergence is completed on the newly active route processor. A critical component of SSO and Cisco HA technology is the cluster control manager (CCM) that manages session recreation on the standby processor. The Cisco IOS Broadband High Availability Stateful Switchover feature allows you to configure subscriber redundancy policies that tune the synchronization process. For more information see the "Configuring Subscriber Redundancy Policy for Broadband HA Stateful Switchover" section.

The Cisco IOS Broadband High Availability Stateful Switchover feature works with other Cisco IOS HA features, Cisco Nonstop Forwarding and Stateful Switchover to maintain PPPoX sessions. NSF continues forwarding network traffic and application state information so that user session information is maintained after a switchover.

Supported Broadband Aggregation Protocols

The Cisco IOS Broadband High Availability Stateful Switchover feature set supports the following broadband aggregation protocols:

•SSO PPPoA

•SSO PPPoE

•SSO RA-MLPS VPN

SSO PPPoA

The Cisco IOS Broadband High Availability Stateful Switchover feature delivers stateful switchover capability for PPPoA sessions during route processor switchover.

SSO PPPoE

The Cisco IOS Broadband High Availability Stateful Switchover feature delivers stateful switchover capability for PPPoE subscriber access sessions, including PPPoE, PPPoEVLAN, PPPoE802.1q-in-q sessions.

SSO RA-MLPS VPN

The Cisco IOS Broadband High Availability Stateful Switchover feature delivers stateful switchover capability for PPPoX terminated into remote access (RA)- MPLS VPN or PPPoX into MPLS VPN sessions during processor switchover.

Figure 1 shows a typical broadband aggregation HA deployment with SSO functionality.

Figure 1 Broadband Aggregation High Availability Deployment

Benefits of Cisco IOS Broadband High Availability Stateful Switchover

•Reduces operating costs associated with outages.

•Delivers higher service levels to subscribers.

•Improved network availability.

•Promotes continuous connectivity, lower packet loss, and consistent path flow through nodes providing specific network services.

•Mitigates service disruptions, reduces downtime costs, and increases operational efficiency.

How to Configure Cisco IOS Broadband High Availability Stateful Switchover

This section contains the following procedures:

•Configuring Subscriber Redundancy Policy for Broadband HA Stateful Switchover

•Verifying and Troubleshooting Subscriber Redundancy Policy for Broadband HA Stateful Switchover

Configuring Subscriber Redundancy Policy for Broadband HA Stateful Switchover

This task configures subscriber redundancy policy for HA SSO capability for broadband subscriber sessions.

SUMMARY STEPS

1. enable

2. configure terminal

3. subscriber redundancy [bulk limit cpu percentage delay seconds allow value] [dynamic limit cpu percentage delay seconds allow value] [delay time] [rate sessions time]

4. exit

DETAILED STEPS

Command or Action

Purpose

Step 1

enable
Example:

Router> enable

Enables privileged EXEC mode.

•Enter your password if prompted.

Step 2

configure terminal
Example:

Router# configure terminal

Enters global configuration mode.

Step 3

subscriber redundancy [bulk limit cpu percentage delay seconds allow value][dynamic limit cpu percentage delay seconds allow value][delay time][rate sessions time]
Example:

Router(config)# subscriber redundancy bulk limit cpu 75 delay 20 allow 30

(Optional) Configures subscriber redundancy policy:

•bulk—Configures bulk synchronization redundancy policy.

•limit cpu percentage—Specifies CPU busy threshold value as a percentage. Range 0 to 100, default 90.

•delay seconds—Specifies delay in seconds before the CCM component synchronizes sessions after the CPU busy threshold is exceeded.

•allow value—Specifies the minimum number of sessions to synchronize once the CPU busy threshold is exceeded and the specified delay is met. Range is 1 to 2,147,483,637, default is 25.

•dynamic—Configures dynamic synchronization redundancy policy.

•delay time—Specifies minimum amount of time in seconds that a session must be ready before dynamic synchronization occurs. Range is 1 to 33,550.

•rate sessions time—Specifies number of sessions per time period for bulk and dynamic synchronization.

–sessions—Range 1 to 32,000, default is 250.

–time—Range in seconds is 1 to ?, default is 1.

Step 4

exit
Example:

Router(config)# exit

Exits the current configuration mode.

Verifying and Troubleshooting Subscriber Redundancy Policy for Broadband HA Stateful Switchover

To verify the configuration, use the show running-config command. Sample output is located in the "Configuration Examples for Cisco IOS Broadband High Availability Stateful Switchover" section.

For troubleshooting the CCM synchronization component, Step 1 and Step 2 are useful. Steps 3, 4 and 5 are useful for reviewing PPPoX session statistics. Step 6 through Step 8 are typically used by Cisco engineers for internal debugging purposes; you may be asked to provide command output to a TAC engineer for assistance in troubleshooting.

SUMMARY STEPS

1. show ccm clients

2. show ccm sessions

3. show ppp subscriber statistics

4. show pppatm statistics

5. show pppoe statistics

6. show ccm queues

7. debug pppatm redundancy

8. debug pppoe redundancy

DETAILED STEPS

Step 1 show ccm clients

This command shows information on the CCM, the HA component that manages the capability to synchronize session bring up on the standby processor of a redundant processor, high availability (HA) system. Use the show ccm clients command to display information on CCM clients. The following is sample output for the show ccm clients command from a Cisco 10000 Series router active processor:
Router# show ccm clients
CCM bundles sent since peer up:
	Sync Session                0
	Update Session              0
	Active Bulk Sync            0
	Session Down                0
	ISSU client msgs            0
	Unknown msgs                0
Client events sent since peer up:
	PPP                         0
	PPPoE                       0
	PPPoA                       0
	AAA                         0
	PPP SIP                     0
	LTERM                       0
	AC                          0
	Virtual Template            0
The following is sample output for the show ccm clients command from a Cisco 10000 Series router standby processor:
Router# show ccm clients
CCM bundles rcvd since last boot:
    Sync Session                8
    Update Session              0
    Active Bulk Sync            1
    Session Down                8
    ISSU client msgs            59
    Unknown msgs                0
Client events extracted since last boot:
    PPP                         72
    PPPoE                       50
    PPPoA                       0
    AAA                         32
    PPP SIP                     0
    LTERM                       8
    AC                          0
Step 2 show ccm sessions

This command shows information on sessions managed by CCM.The following is sample output for the show ccm sessions command on the active processor:
Router# show ccm sessions
Global CCM state:                                CCM HA Active - Dynamic Sync
Global ISSU state:                               Compatible, Clients Cap 0x0
> Number of sessions in state Down:                0
> Number of sessions in state Not Ready:           0
> Number of sessions in state Ready:               0
> Number of sessions in state Dyn Sync:            0
> 
> Timeout: Timer Type   Delay    Remaining Starts    CPU Limit CPU Last
>          ------------ -------- --------- --------- --------- --------
>          Rate         00:00:01 -         2         -         -       
>          Dynamic CPU  00:00:10 -         0         90        0 
The following is sample output for the show ccm sessions command on the standby processor:
Router# show ccm sessions
Global CCM state:                        CCM HA Standby - Collecting
Global ISSU state:                       Compatible, Clients Cap 0xFFE
                                         Current     Bulk Sent   Bulk Rcvd
                                         ----------- ----------- -----------
Number of sessions in state Down:        0           0           0          
Number of sessions in state Not Ready:   0           0           0          
Number of sessions in state Ready:       0           0           0          
Number of sessions in state Dyn Sync:    0           0           0          
Timeout: Timer Type   Delay    Remaining Starts      CPU Limit CPU Last
         ------------ -------- --------- ----------- --------- --------
         Rate         00:00:01 -         0           -         -       
         Dynamic CPU  00:00:10 -         0           90        0       
         Bulk Time Li 00:08:00 -         0           -         -       
         RF Notif Ext 00:00:20 -         0           -         -       
Step 3 show ppp subscriber statistics

This command is useful for obtaining events and statistics for PPP subscribers. Use the show ppp subscriber statistics command to display a cumulative count of PPP subscriber events and statistics, and to display an incremental count since the clear ppp subscriber statistics command was last issued.

The following is sample output for the show ppp subscriber statistics command:
Router# show ppp subscriber statistics
PPP Subscriber Events          TOTAL         SINCE CLEARED
Encap                          32011         32011        
DeEncap                        16002         16002        
CstateUp                       173           173          
CstateDown                     36            36           
FastStart                      0             0            
LocalTerm                      7             7            
LocalTermVP                    0             0            
MoreKeys                       173           173          
Forwarding                     0             0            
Forwarded                      0             0            
SSSDisc                        0             0            
SSMDisc                        0             0            
PPPDisc                        167           167          
PPPBindResp                    173           173          
PPPReneg                       3             3            
RestartTimeout                 169           169          
> 
PPP Subscriber Statistics      TOTAL         SINCE CLEARED
IDB CSTATE UP                  16008         16008        
IDB CSTATE DOWN                40            40           
APS UP                         0             0            
APS UP IGNORE                  0             0            
APS DOWN                       0             0            
READY FOR SYNC                 10            10           
Step 4 show pppatm statistics

This command is useful for obtaining statistics for PPPoA sessions. Use the show pppatm statistics command to display a total count of PPPoA events since the clear pppatm statistics command was last issued.

The following example displays PPPoA statistics:
Router# show pppatm statistics
	4000 : Context Allocated events
	3999 : SSS Request events
	7998 : SSS Msg events
	3999 : PPP Msg events
	3998 : Up Pending events
	3998 : Up Dequeued events
	3998 : Processing Up events
	3999 : Vaccess Up events
	3999 : AAA unique id allocated events
	3999 : No AAA method list set events
	3999 : AAA gets nas port details events
	3999 : AAA gets retrived attrs events
	68202 : AAA gets dynamic attrs events
	3999 : Access IE allocated events
Step 5 show pppoe statistics

This command is useful for obtaining statistics and events for PPPoE sessions. Use the show pppoe statistics command to display a cumulative count of PPPoE events and statistics, and to display an incremental count since the last time the clear pppoe statistics command was issued.

The following is sample output for the show pppoe statistics command:
Router# show pppoe statistics
PPPoE Events                   TOTAL         SINCE CLEARED
------------------------------ ------------- -------------
INVALID                        0             0            
PRE-SERVICE FOUND              0             0            
PRE-SERVICE NONE               0             0            
SSS CONNECT LOCAL              16002         16002        
SSS FORWARDING                 0             0            
SSS FORWARDED                  0             0            
SSS MORE KEYS                  16002         16002        
SSS DISCONNECT                 0             0            
CONFIG UPDATE                  0             0            
STATIC BIND RESPONSE           16002         16002        
PPP FORWARDING                 0             0            
PPP FORWARDED                  0             0            
PPP DISCONNECT                 0             0            
PPP RENEGOTIATION              0             0            
SSM PROVISIONED                16002         16002        
SSM UPDATED                    16002         16002        
SSM DISCONNECT                 0             0            
> 
PPPoE Statistics               TOTAL         SINCE CLEARED
------------------------------ ------------- -------------
SSS Request                    16002         16002        
SSS Response Stale             0             0            
SSS Disconnect                 0             0            
PPPoE Handles Allocated        16002         16002        
PPPoE Handles Freed            0             0            
Dynamic Bind Request           16002         16002        
Static Bind Request            16002         16002 
Step 6 show ccm queues

Use the show ccm queues command to display queue statistics for CCM sessions on active and standby processors. This command is generally used only by Cisco engineers for internal debugging of CCM processes.

The following is sample output for the show ccm queues command:
Router# show ccm queues
9 Event Queues
                 size   max      kicks     starts    false   suspends  ticks(ms)
 4 CCM              0     2         13         13        0          0        20
 Event Names
                          Events  Queued  MaxQueued  Suspends  usec/evt max/evt
 1  4 Sync Session              0        0        0        0         0         0
 2  4 Sync Client               0        0        0        0         0         0
 3  4 Update                    0        0        0        0         0         0
 4  4 Session Down              0        0        0        0         0         0
 5  4 Bulk Sync Begi            0        0        0        0         0         0
 6  4 Bulk Sync Cont            0        0        0        0         0         0
 7  4 Bulk Sync End             1        0        1        0        53        53
 8  4 Going Active              0        0        0        0         0         0
 9  4 Going Standby             1        0        1        0        10        10
10  4 Standby Presen            0        0        0        0         0         0
11  4 Standby Gone              0        0        0        0         0         0
13  4 CP Message               18        0        2        0       156       573
14  4 Recr Session              0        0        0        0         0         0
15  4 Recr Update               0        0        0        0         0         0
16  4 Recr Sess Down            0        0        0        0         0         0
17  4 ISSU Session N            1        0        1        0       283       283
18  4 ISSU Peer Comm            0        0        0        0         0         0
Step 7 debug pppatm redundancy

Use the debug pppatm redundancy command to display CCM events and messages for PPPoA sessions on HA systems. This command is generally used only by Cisco engineers for internal debugging of CCM processes. The following is sample output for the debug pppatm redundancy command from a Cisco 10000 Series router standby processor:
Router# debug pppatm redundancy
*Dec  3 02:58:40.784: PPPATM HA: [14000001]: Received the first SHDB 
*Dec  3 02:58:40.784: PPPATM HA: [14000001]: Base hwidb not created yet, queuing SHDB 
*Dec  3 02:58:40.784: PPPATM HA: [14000001]: 
Requesting base vaccess creation
> 
Step 8 debug pppoe redundancy

Use the debug pppoe redundancy command to display CCM events and messages for PPPoE sessions on HA systems. This command is generally used only by Cisco engineers for internal debugging of CCM processes. The following is sample output for the debug pppoe redundancy command from a Cisco 10000 Series router active processor:
Router# debug pppoe redundancy
Nov 22 17:21:11.327: PPPoE HA[0xBE000008] 9: Session ready to sync data 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = PADR, length = 58 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SESSION ID, length = 2 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SWITCH HDL, length = 4 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SEGMENT HDL, length = 4 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = PHY SWIDB DESC, length = 20 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = VACCESS DESC, length = 28 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: Sync collection for ready events 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = PADR, length = 58 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SESSION ID, length = 2 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SWITCH HDL, length = 4 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SEGMENT HDL, length = 4 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = PHY SWIDB DESC, length = 20 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = VACCESS DESC, length = 28
The following is sample output for the debug pppoe redundancy command from a Cisco 10000 Series router standby processor:
Router# debug pppoe redundancy
Nov 22 17:21:11.448: PPPoE HA[0x82000008]: Recreating session: retrieving data 
Nov 22 17:21:11.464: PPPoE HA[0x82000008] 9: Session ready to sync data
Configuration Examples for Cisco IOS Broadband High Availability Stateful Switchover

This section provides the following configuration examples:

•PPPoX Terminated into an RA-MPLS Network with SSO: Example

PPPoX Terminated into an RA-MPLS Network with SSO: Example

The following example shows how to configure the Cisco IOS Broadband High Availability Stateful Switchover feature in a RA-MPLS network.
Router# show running-config
hostname Router
!
boot-start-marker
boot system bootflash:c10k2-p11-mz.sur3_1003 boot-end-marker !
enable password cisco
!
aaa new-model
!
!
aaa authentication ppp default local
!
!
!
aaa session-id common
ppp hold-queue 80000
facility-alarm intake-temperature major 54 facility-alarm intake-temperature minor 45 
facility-alarm intake-temperature critical 72 facility-alarm core-temperature major 58 
facility-alarm core-temperature minor 50 facility-alarm core-temperature critical 85 !
!
card 1/0 4oc3atm-1
card 2/0 4oc3atm-1
card 3/0 4oc3atm-1
card 4/0 4oc3atm-1
card 5/0 8fastethernet-1
card 6/0 4oc3atm-1
card 7/0 4oc3atm-1
card 8/0 1gigethernet-hh-1
card 8/1 1gigethernet-hh-1
ip subnet-zero
no ip gratuitous-arps
no ip domain lookup
ip vrf vrf1
  rd 1:1
  route-target export 1:1
  route-target import 1:1
!
no ip dhcp use vrf connected
!
!
!
!
no subscriber policy recording rules
The following lines show subscriber redundancy policy configuration:
subscriber redundancy dynamic limit cpu 90 delay 10 subscriber redundancy bulk limit cpu 
90 delay 10 subscriber redundancy rate 4000 1 subscriber redundancy delay 10 no mpls 
traffic-eng auto-bw timers frequency 0 mpls ldp graceful-restart mpls ldp router-id 
Loopback100 no virtual-template snmp no issu config-sync policy bulk prc no issu 
config-sync policy bulk bem !
redundancy
  mode sso
username cisco password 0 cisco
!
buffers small permanent 15000
buffers middle permanent 12000
buffers large permanent 1000
bba-group pppoe grp1
  virtual-template 1
!
bba-group pppoe grp2
  virtual-template 2
!
bba-group pppoe grp3
  virtual-template 3
!
bba-group pppoe grp4
  virtual-template 4
!
bba-group pppoe grp5
  virtual-template 5
!
bba-group pppoe grp7
  virtual-template 7
!
bba-group pppoe grp8
  virtual-template 8
!
bba-group pppoe grp6
  virtual-template 6
!
!
interface Loopback0
  ip vrf forwarding vrf1
  ip address 100.1.1.1 255.255.255.255
!
interface Loopback100
  ip address 223.0.0.1 255.255.255.255
!
interface FastEthernet0/0/0
  ip address 192.168.2.26 255.255.255.0
  speed 100
  full-duplex
!
interface ATM1/0/0
  no ip address
  load-interval 30
!
interface ATM1/0/0.1 multipoint
  range pvc 1/32 1/4031
   encapsulation aal5snap
   protocol pppoe group grp1
  !
!
interface ATM1/0/0.2 multipoint
  range pvc 2/32 2/4031
   encapsulation aal5snap
   protocol pppoe group grp2
  !
!
interface ATM1/0/1
  no ip address
!
interface ATM1/0/1.1 multipoint
  range pvc 3/32 3/4031
   encapsulation aal5snap
   protocol pppoe group grp3
  !
!
interface ATM1/0/1.2 multipoint
  range pvc 4/32 4/4031
   encapsulation aal5snap
   protocol pppoe group grp4
  !
!
interface ATM1/0/2
  no ip address
!
interface ATM1/0/2.1 multipoint
  range pvc 5/32 5/4031
   encapsulation aal5snap
   protocol pppoe group grp5
  !
!
interface ATM1/0/2.2 multipoint
  range pvc 6/32 6/4031
   encapsulation aal5snap
   protocol pppoe group grp6
  !
!
interface ATM1/0/3
  no ip address
!
interface ATM1/0/3.1 multipoint
  range pvc 7/32 7/4031
   encapsulation aal5snap
   protocol pppoe group grp7
  !
!
interface ATM1/0/3.2 multipoint
  range pvc 8/32 8/4031
   encapsulation aal5snap
   protocol pppoe group grp8
  !
!
!
!
interface ATM7/0/3
  no ip address
!
interface GigabitEthernet8/0/0
  mac-address 0011.0022.0033
  ip vrf forwarding vrf1
  ip address 20.1.1.2 255.255.255.0
  negotiation auto
!
interface GigabitEthernet8/1/0
  ip address 11.1.1.1 255.255.255.0
  negotiation auto
  mpls ip
!
interface Virtual-Template1
  ip vrf forwarding vrf1
  ip unnumbered Loopback0
  no logging event link-status
  peer default ip address pool pool1
  no snmp trap link-status
  keepalive 30
  ppp authentication pap
!
interface Virtual-Template2
  ip vrf forwarding vrf1
  ip unnumbered Loopback0
  no logging event link-status
  peer default ip address pool pool2
  no snmp trap link-status
  keepalive 30
  ppp authentication pap
!
interface Virtual-Template3
  ip vrf forwarding vrf1
  ip unnumbered Loopback0
  no logging event link-status
  peer default ip address pool pool3
  no snmp trap link-status
  keepalive 30
  ppp authentication pap
!
interface Virtual-Template4
  ip vrf forwarding vrf1
  ip unnumbered Loopback0
  no logging event link-status
  peer default ip address pool pool4
  no snmp trap link-status
  keepalive 30
  ppp authentication pap
!
interface Virtual-Template5
  ip vrf forwarding vrf1
  ip unnumbered Loopback0
  no logging event link-status
  peer default ip address pool pool5
  no snmp trap link-status
  keepalive 30
  ppp authentication pap
!
interface Virtual-Template6
  ip vrf forwarding vrf1
  ip unnumbered Loopback0
  no logging event link-status
  peer default ip address pool pool6
  no snmp trap link-status
  keepalive 30
  ppp authentication pap
!
interface Virtual-Template7
  ip vrf forwarding vrf1
  ip unnumbered Loopback0
  no logging event link-status
  peer default ip address pool pool7
  no snmp trap link-status
  keepalive 30
  ppp authentication pap
!
interface Virtual-Template8
  ip vrf forwarding vrf1
  ip unnumbered Loopback0
  no logging event link-status
  peer default ip address pool pool8
  no snmp trap link-status
  keepalive 30
  ppp authentication pap
!
router ospf 1
  log-adjacency-changes
  nsf
  network 11.1.1.0 0.0.0.255 area 0
  network 223.0.0.0 0.0.0.255 area 0
!
router bgp 1
  no synchronization
  bgp log-neighbor-changes
  bgp graceful-restart restart-time 120
  bgp graceful-restart stalepath-time 360
  bgp graceful-restart
  neighbor 223.0.0.3 remote-as 1
  neighbor 223.0.0.3 update-source Loopback100
  no auto-summary
  !
  address-family vpnv4
  neighbor 223.0.0.3 activate
  neighbor 223.0.0.3 send-community extended
  exit-address-family
  !
  address-family ipv4 vrf vrf1
  redistribute connected
  redistribute static
  no auto-summary
  no synchronization
  exit-address-family
!
ip local pool pool2 12.1.1.1 12.1.16.160 ip local pool pool3 13.1.1.1 13.1.16.160 ip local 
pool pool4 14.1.1.1 14.1.16.160 ip local pool pool5 15.1.1.1 15.1.16.160 ip local pool 
pool6 16.1.1.1 16.1.16.160 ip local pool pool7 17.1.1.1 17.1.16.160 ip local pool pool8 
18.1.1.1 18.1.16.160 ip classless !
!
no ip http server
!
!
arp 20.1.1.1 0020.0001.0001 ARPA
arp vrf vrf1 20.1.1.1 0020.0001.0001 ARPA !
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
  password cisco
!
exception crashinfo file bootflash:crash.log !
end
Additional References

The following sections provide references related to the Cisco IOS Broadband High Availability Stateful Switchover feature.

Related Documents

Related Topic

Document Title

Information about Cisco 10000 series routers and broadband aggregation

Cisco 10000 Series Router Broadband Aggregation, Leased-Line, and MPLS Configuration Guide

Performing an ISSU

Cisco IOS In Service Software Upgrade Process

Information about the broadband ISSU feature

Cisco IOS Broadband High Availability In Service Software Upgrade

Information about Stateful Switchover

Stateful Switchover

Information about Cisco Nonstop Forwarding

Cisco Nonstop Forwarding

Standards

Standard

Title

No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature.

—

MIBs

MIB

MIBs Link

•No new or modified MIBs are supported by this feature, and support for existing MIBs has not been modified by this feature.

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs

RFCs

RFC

Title

No new or modified RFCs are supported by this feature, and support for existing RFCs has not been modified by this feature.

—

Technical Assistance

Description

Link

The Cisco Technical Support & Documentation website contains thousands of pages of searchable technical content, including links to products, technologies, solutions, technical tips, tools, and technical documentation. Registered Cisco.com users can log in from this page to access even more content.

http://www.cisco.com/techsupport

Command Reference

This section documents new commands only.

•clear ppp subscriber statistics

•clear pppatm statistics

•clear pppoe statistics

•debug pppatm redundancy

•debug pppoe redundancy

•show ccm clients

•show ccm queues

•show ccm sessions

•show ppp subscriber statistics

•show pppatm statistics

•show pppoe statistics

•subscriber redundancy

clear ppp subscriber statistics

To clear PPP subscriber statistics, use the clear ppp subscriberstatistics command in privileged EXEC mode.

clear ppp subscriber statistics
Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.2(31)SB2

This command was introduced.

Usage Guidelines

Use the clear ppp subscriber statistics command to clear all PPP subscriber statistics and reset counters to zero.

Examples

The following example clears all PPP subscriber statistics:
Router# clear ppp subscriber statistics
Related Commands

Command

Description

show ppp subscriber statistics

Displays PPP statistics.

clear pppatm statistics

To clear PPP over ATM statistics, use the clear pppatm statistics command in privileged EXEC mode.

clear pppatm statistics
Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.2(31)SB2

This command was introduced.

Usage Guidelines

Use the clear pppatm statistics command to clear all PPP over ATM statistics and reset counters to zero.

Examples

The following example clears all PPP over ATM statistics:
Router# clear pppatm statistics
Related Commands

Command

Description

show pppatm statistics

Displays PPPoATM statistics.

clear pppoe statistics

To clear PPP over Ethernet (PPPoE) statistics, use the clear pppoe statistics command in privileged EXEC mode.

clear pppoe statistics
Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.2(31)SB2

This command was introduced.

Usage Guidelines

Use the clear pppoe statistics command to clear all PPPoE statistics and reset counters to zero.

Examples

The following example clears all PPPoE statistics:
Router# clear pppoe statistics
Related Commands

Command

Description

show pppoe statistics

Displays PPPoE statistics.

debug pppatm redundancy

To debug PPP over ATM (PPPoA) redundancy events on a dual route processor high availablity (HA) system,, use the debug pppatm redundancy command in privileged EXEC mode. To disable the display of debugging output, use the no form of this command.

debug pppatm redundancy
no debug pppatm redundancy
Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.2(31)SB2

This command was introduced on the Cisco 10000 series Internet routers.

Usage Guidelines

The Cluster Control Manager (CCM) provides the capability to facilitate and synchronize session bring up on the standby processor of a dual-route processor, high availability (HA) system. Use the debug pppatm redundancy command to display CCM events and messages for PPPoA sessions on HA systems.

Note The debug pppatm redundancy command does not display output on the active processor during normal synchronization, that is, the command displays output on the active processor only during an error condition.

This command is generally used only by Cisco engineers for internal debugging CCM processes.

Examples

The following is sample output for the debug pppatm redundancy command from a Cisco 10000 Series router standby processor:
Router# debug pppatm redundancy
*Dec  3 02:58:40.784: PPPATM HA: [14000001]: Received the first SHDB 
*Dec  3 02:58:40.784: PPPATM HA: [14000001]: Base hwidb not created > yet, queuing SHDB 
*Dec  3 02:58:40.784: PPPATM HA: [14000001]: 
Requesting base vaccess creation
debug pppoe redundancy

To debug PPP over Ethernet (PPPoE) redundancy events on a dual route processor high availablity (HA) system, use the debug pppoe redundancy command in privileged EXEC mode. To disable the display of debugging output, use the no form of this command.

debug pppoe redundancy
no debug ppp redundancy
Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.2(31)SB2

This command was introduced.

Usage Guidelines

The Cluster Control Manager (CCM) provides the capability to facilitate and synchronize session bring up on the standby processor of a dual-route processor, high availability (HA) system.Use the debug pppoe redundancy command to display CCM events and messages for PPPoE sessions on HA systems. This command is generally used only by Cisco engineers for internal debugging of CCM processes.

Examples

The following is sample output for the debug pppoe redundancy command from a Cisco 10000 Series router active processor:
Router# debug pppoe redundancy
Nov 22 17:21:11.327: PPPoE HA[0xBE000008] 9: Session ready to sync data 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = PADR, length = 58 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SESSION ID, length = 2 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SWITCH HDL, length = 4 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SEGMENT HDL, length = 4 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = PHY SWIDB DESC, length = 20 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = VACCESS DESC, length = 28 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: Sync collection for ready events 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = PADR, length = 58 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SESSION ID, length = 2 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SWITCH HDL, length = 4 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SEGMENT HDL, length = 4 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = PHY SWIDB DESC, length = 20 
Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = VACCESS DESC, length = 28
The following is sample output for the debug pppoe redundancy command from a Cisco 10000 Series router standby processor:
Router# debug pppoe redundancy
Nov 22 17:21:11.448: PPPoE HA[0x82000008]: Recreating session: retrieving data 
Nov 22 17:21:11.464: PPPoE HA[0x82000008] 9: Session ready to sync data
show ccm clients

To display information about cluster control manager (CCM) clients on dual processor, high availability (HA) systems. use the show ccm clients command in privileged EXEC mode.

show ccm clients
Syntax Description

This command has no arguments or keywords.

Command Default

No default behavior or values.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.2(31)SB2

This command was introduced.

Usage Guidelines

The CCM manages the capability to synchronize session bring up on the standby processor of a redundant processor HA system. Use the show ccm clients command to display information on CCM clients.

Examples

The following is sample output for the show ccm clients command from a Cisco 10000 Series router active processor:
Router# show ccm clients
CCM bundles sent since peer up:
	Sync Session                0
	Update Session              0
	Active Bulk Sync            0
	Session Down                0
	ISSU client msgs            0
	Unknown msgs                0
Client events sent since peer up:
	PPP                         0
	PPPoE                       0
	PPPoA                       0
	AAA                         0
	PPP SIP                     0
	LTERM                       0
	AC                          0
	Virtual Template            0
The following is sample output for the show ccm clients command from a Cisco 10000 Series router standby processor:
Router# show ccm clients
CCM bundles rcvd since last boot:
    Sync Session                8
    Update Session              0
    Active Bulk Sync            1
    Session Down                8
    ISSU client msgs            59
    Unknown msgs                0
Client events extracted since last boot:
    PPP                         72
    PPPoE                       50
    PPPoA                       0
    AAA                         32
    PPP SIP                     0
    LTERM                       8
    AC                          0
Table 5 describes the significant fields shown in the show ccm clients command output. Any data not described in Table 5 is used for Cisco internal debugging purposes.

Table 1 show ccm clients Field Descriptions

Field

Description

CCM bundles sent since peer up

Number of the following types of CCM bundles sent by the active processor since bringup on the standby processor :

•Sync Session—Synchronization session bundles.

•Update Session—Update session bundles.

•Active Bulk Sync—Active processor bulk synchronization bundles.

•Session Down—Session down bundles.

•ISSU client msgs—In service software upgrade (ISSU) bundles.

•Unknown msgs—Unknown message bundles.

Client events sent since peer up

Number of the following types of client events sent since bringup on the standby processor:

•CCM bundles rcvd since last boot—Number of CCM bundles received by the standby processor since boot time.

•PPP—PPP client events.

•PPPoE—PPPoE client events.

•PPPoA—PPPoA client events.

•AAA—AAA client events.

•PPP SIP—PPP subscriber initiation process (SIP) events.

•LTERM—Local termination client events.

•AC—Attachment circuit events.

•Virtual Template—Virtual template events.

CCM bundles rcvd since last boot

Number of the following types of CCM bundles received by the standby processor since bringup:

•Sync Session—Synchronization session bundles.

•Update Session—Update session bundles.

•Active Bulk Sync—Active processor bulk synchronization bundles.

•Session Down—Session down bundles.

•ISSU client msgs—In service software upgrade (ISSU) bundles.

•Unknown msgs—Unknown message bundles.

Client events extracted since last boot

Number of the following client events extracted since bringup on the standby processor:

•PPP—Point to point protocol (PPP) client events.

•PPPoE—PPP over Ethernet (PPPoE) client events.

•PPPoA—PPP over ATM (PPPoA) client events.

•AAA—Authentication, authorization, and accounting (AAA) client events.

•PPP SIP—PPP subscriber initiation process (SIP) events.

•LTERM—Local termination client events.

•AC—Attachment circuit events

Related Commands

Command

Description

show ccm queues

Displays CCM queue statistics.

show ccm sessions

Displays CCM session information.

show ccm queues

To display cluster control manager (CCM) queue statistics for high availability (HA) systems, use the show ccm queues command in privileged EXEC mode.

show ccm queues
Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.2(31)SB2

This command was introduced.

Usage Guidelines

The CCM manages the capability to synchronize session bring up on the standby processor of a redundant processor, HA system. Use the show ccm queues command to display queue statistics for CCM sessions on active and standby processors. This command is generally used only by Cisco engineers for internal debugging of CCM processes.

Examples

The following is sample output for the show ccm queues command:
Router# show ccm queues
9 Event Queues
                 size   max      kicks     starts    false   suspends  ticks(ms)
 4 CCM              0     2         13         13        0          0        20
 Event Names
                          Events  Queued  MaxQueued  Suspends  usec/evt max/evt
 1  4 Sync Session              0        0        0        0         0         0
 2  4 Sync Client               0        0        0        0         0         0
 3  4 Update                    0        0        0        0         0         0
 4  4 Session Down              0        0        0        0         0         0
 5  4 Bulk Sync Begi            0        0        0        0         0         0
 6  4 Bulk Sync Cont            0        0        0        0         0         0
 7  4 Bulk Sync End             1        0        1        0        53        53
 8  4 Going Active              0        0        0        0         0         0
 9  4 Going Standby             1        0        1        0        10        10
10  4 Standby Presen            0        0        0        0         0         0
11  4 Standby Gone              0        0        0        0         0         0
13  4 CP Message               18        0        2        0       156       573
14  4 Recr Session              0        0        0        0         0         0
15  4 Recr Update               0        0        0        0         0         0
16  4 Recr Sess Down            0        0        0        0         0         0
17  4 ISSU Session N            1        0        1        0       283       283
18  4 ISSU Peer Comm            0        0        0        0         0         0
Related Commands

Command

Description

show ccm clients

Displays CCM client information

show ccm sessions

Displays CCM session information

show ccm sessions

To display information about cluster control manager (CCM) sessions on High Availability (HA) systems, use the show ccm sessions command in privileged EXEC mode.

show ccm sessions
Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.2(31)SB2

This command was introduced.

Usage Guidelines

The CCM manages the capability to synchronize session bring up on the standby processor of a redundant processor HA system.Use the show ccm sessions command to display information on CCM sessions on active and standby processors, and also to display information on subscriber redundancy policies configured using the subscriber redundancy command.

Examples

The following is sample output for the show ccm sessions command on the active processor:
Router# show ccm sessions
Global CCM state:                                CCM HA Active - Dynamic Sync
Global ISSU state:                               Compatible, Clients Cap 0x0
	Number of sessions in state Down:                0
	Number of sessions in state Not Ready:           0
	Number of sessions in state Ready:               0
	Number of sessions in state Dyn Sync:            0
Timeout: Timer Type   Delay    Remaining Starts    CPU Limit CPU Last
		------------ -------- --------- --------- --------- --------
		Rate         00:00:01 	-         2         -         -       
		Dynamic CPU  00:00:10 	-         0         90        0 
The following is sample output for the show ccm sessions command on the standby processor:
Router# show ccm sessions
Global CCM state:                        CCM HA Standby - Collecting
Global ISSU state:                       Compatible, Clients Cap 0xFFE
                                         Current     Bulk Sent   Bulk Rcvd
                                         ----------- ----------- -----------
Number of sessions in state Down:        0           0           0          
Number of sessions in state Not Ready:   0           0           0          
Number of sessions in state Ready:       0           0           0          
Number of sessions in state Dyn Sync:    0           0           0          
Timeout: Timer Type   Delay    Remaining Starts      CPU Limit CPU Last
         ------------ -------- --------- ----------- --------- --------
         Rate         00:00:01 -         0           -         -       
         Dynamic CPU  00:00:10 -         0           90        0       
         Bulk Time Li 00:08:00 -         0           -         -       
         RF Notif Ext 00:00:20 -         0           -         -       
Table 2 describes the significant fields shown in the show ccm sessions command output. Any data not described in Table 2 is used for Cisco internal debugging purposes.

Table 2 show ccm sessions Field Descriptions

Field

Description

Global CCM state

Displays the number and state of CCM sessions on the following processors:

•CCM HA Active- Dynamic Sync

•CCM HA Standby - Collecting

Global ISSU state

Compatible clients indicates CCM compatible in service software upgrade (ISSU) clients, that is, ISSU-compatible Cisco IOS versions, are running on both processors.

Current

CCM sessions currently ready for synchronization.

Bulk Sent

CCM sessions sent during bulk synchronization.

Bulk Rcvd

CCM sessions received during bulk synchronization.

Number of sessions in state Down

Sessions in the down state.

Number of sessions in state Error

Sessions in the error state.

Number of sessions in state Not Ready

Sessions in the not ready state.

Number of sessions in state Ready

Sessions in the ready state.

Number of sessions in state Dyn Sync

Sessions in the dynamic synchronization state.

Timeout

Displays statistics for the following timers:

•Rate—Monitors the number of sessions to be synchronized per configured time period.

•Dynamic CPU—Monitors CPU limit, number of sessions, delay and allowed calls configured for dynamic synchronization parameters.

•Bulk Time Limit—Monitors the time limit configured for bulk synchronization.

•RF Notif Ext—Monitors redundancy facility(RF) active and standby state progressions and events.

Use the subscriber redundancy command to modify parameters that these timers monitor.

Delay

Timer delay in seconds for bulk and dynamic synchronization for subscriber sessions.

Remaining

Indicates remaining time in seconds before the timer expires.

Starts

Indicates the number of times the timer started.

CPU Limit

CPU usage percentage, a configurable value, default 90 percent.

CPU Last

Indicates the last time the CPU limit timer was running.

Related Commands

Command

Description

show ccm clients

Displays CCM client information

show ccm queues

Displays CCM queue information

show ppp subscriber statistics

To display PPP subscriber statistics, use the show ppp subscriber statistics command in privileged EXEC mode.

show ppp subscriber statistics
Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.2(31)SB2

This command was introduced.

Usage Guidelines

This command is useful for obtaining events and statistics for PPP subscribers. Use the show ppp subscriber statistics command to display a cumulative count of PPP subscriber events and statistics, and to display an incremental count since the clear ppp subscriber statistics command was last issued.

Examples

The following is sample output for the show ppp subscriber statistics command:
Router# show ppp subscriber statistics
PPP Subscriber Events          TOTAL         SINCE CLEARED
Encap                          32011         32011        
DeEncap                        16002         16002        
CstateUp                       173           173          
CstateDown                     36            36           
FastStart                      0             0            
LocalTerm                      7             7            
LocalTermVP                    0             0            
MoreKeys                       173           173          
Forwarding                     0             0            
Forwarded                      0             0            
SSSDisc                        0             0            
SSMDisc                        0             0            
PPPDisc                        167           167          
PPPBindResp                    173           173          
PPPReneg                       3             3            
RestartTimeout                 169           169          
> 
PPP Subscriber Statistics      TOTAL         SINCE CLEARED
IDB CSTATE UP                  16008         16008        
IDB CSTATE DOWN                40            40           
APS UP                         0             0            
APS UP IGNORE                  0             0            
APS DOWN                       0             0            
READY FOR SYNC                 10            10           
Table 5 describes the significant fields shown in the displays. Any data not described in Table 5 is used for internal debugging purposes.

Table 3 show ppp subscriber statistics Field Descriptions

Field

Description

Encap

Number of interfaces on which PPP encapsulation is enabled.

DeEncap

Number of interfaces on which PPP de-encapsulation is enabled.

CstateUp

Number of times the PPP component received notification that the interface state has changed to up.

CstateDown

Number of times PPP interfaces are shut down.

FastStart

Number of PPP sessions started by LCP packets before the interface state was up.

LocalTerm

Locally terminated PPP sessions.

LocalTermVP

Locally terminated PPP sessions running on virtual profiles.

MoreKeys

PPP sessions that are in the intermediate state, that is, processing service keys, before a session is forwarded or terminated locally.

Forwarding

PPP sessions in forwarding state.

Forwarded

PPP sessions that have been forwarded.

SSSDisc

PPP sessions disconnected from the subscriber service switch after receiving disconnect notification.

SSMDisc

PPP sessions disconnected from the dataplane after receiving diconnect notification.

PPPBindResp

Number of PPP responses where the interface has been bound to the session.

PPP FORWARDING

PPP sessions in the forwarding state.

PPP FORWARDED

Forwarded PPP sessions.

PPPDisc

Disconnected PPP sessions after receiving disconnect notification from the state machine.

PPPReneg

Renegotiated PPP sessions fter receiving renegotiation notification from the state machine.

RestartTimeout

Occurrences of the restart timer beginning on PPP encapsulated interfaces in the down state.

IDB CSTATE UP

Occurrences of the IDB transitioning to the up state.

IDB CSTATE DOWN

Occurrences of the IDB transitioning to the down state.

APS UP

Occurrences of PPP sessions receiving automatic protection switching (APS) selected events.

APS UP IGNORE

Occurrences of PPP sessions receiving automatic protection switching (APS) selected events when the IDB state was down.

APS DOWN

Occurrences of PPP sessions receiving automatic protection switching (APS) de-selected events.

READY FOR SYNC

Number of PPP sessions ready for synchronization.

SSS

Related Commands

Command

Description

clear ppp subscriber statistics

Clears PPP subscriber statistics.

show pppatm statistics

To display PPP over ATM (PPPoA) statistics, use the show pppatm statistics command in privileged EXEC mode.

show pppatm statistics
Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.2(31)SB2

This command was introduced.

Usage Guidelines

This command is useful for obtaining statistics for PPPoA sessions. Use the show pppatm statistics command to display a total count of PPPoA events since the clear pppatm statistics command was last issued.

Examples

The following example displays PPPoA statistics:
Router# show pppatm statistics
	4000 : Context Allocated events
	3999 : SSS Request events
	7998 : SSS Msg events
	3999 : PPP Msg events
	3998 : Up Pending events
	3998 : Up Dequeued events
	3998 : Processing Up events
	3999 : Vaccess Up events
	3999 : AAA unique id allocated events
	3999 : No AAA method list set events
	3999 : AAA gets nas port details events
	3999 : AAA gets retrived attrs events
	68202 : AAA gets dynamic attrs events
	3999 : Access IE allocated events
Table 4 describes the significant fields shown in the displays. Any data not described in Table 4 is used for internal debugging purposes.

Table 4 show pppatm statistics Field Descriptions

Field

Description

Context allocated events

Indicates the number of times a PPPoA context was allocated.

SSS request events

Subscriber service switch (SSS) requests made by PPPoA component.

SSS Msg events

SSS responses received by PPPoA component.

PPP Msg events

PPP responses received by PPPoA component.

Up Pending events

ATM VC up notification of events in queue not yet processed.

Up dequeued events

ATM VC up notification of events removed from queue, but being processed.

Processing Up events

PPPoA events processed successfully.

Vaccess Up events

Number of events for which the virtual access interface state is changed to up by PPPoA.

AAA unique id allocated events

Number of events for which a unique AAA ID was allocated.

No AAA method list set events

Number of events for which no AAA accounting list was configured.

AAA get NAS port details events

Number of NAS port events.

AAA gets retrieved attrs events

Number of AAA retrieved attributes events for incoming and outgoing packets.

AAA gets dynamic attrs events

Number of AAA dynamic attributes events for start/stop packets.

Access IE allocated events

Number of IE (internal ID ) allocated events.

Related Commands

Command

Description

clear pppatm statistics

Clears PPP ATM statistics.

show pppoe statistics

To display PPP over Ethernet (PPPoE) events and statistics, use the show pppoe statistics command in privileged EXEC mode.

show pppoe statistics
Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.2(31)SB2

This command was introduced.

Usage Guidelines

This command is useful for obtaining statistics and events for PPPoE sessions. Use the show pppoe statistics command to display a cumulative count of PPPoE events and statistics, and to display an incremental count since the last time the clear pppoe statistics command was issued.

Examples

The following is sample output for the show pppoe statistics command:
Router# show pppoe statistics
PPPoE Events                   TOTAL         SINCE CLEARED
------------------------------ ------------- -------------
INVALID                        0             0            
PRE-SERVICE FOUND              0             0            
PRE-SERVICE NONE               0             0            
SSS CONNECT LOCAL              16002         16002        
SSS FORWARDING                 0             0            
SSS FORWARDED                  0             0            
SSS MORE KEYS                  16002         16002        
SSS DISCONNECT                 0             0            
CONFIG UPDATE                  0             0            
STATIC BIND RESPONSE           16002         16002        
PPP FORWARDING                 0             0            
PPP FORWARDED                  0             0            
PPP DISCONNECT                 0             0            
PPP RENEGOTIATION              0             0            
SSM PROVISIONED                16002         16002        
SSM UPDATED                    16002         16002        
SSM DISCONNECT                 0             0            
> 
PPPoE Statistics               TOTAL         SINCE CLEARED
------------------------------ ------------- -------------
SSS Request                    16002         16002        
SSS Response Stale             0             0            
SSS Disconnect                 0             0            
PPPoE Handles Allocated        16002         16002        
PPPoE Handles Freed            0             0            
Dynamic Bind Request           16002         16002        
Static Bind Request            16002         16002        
Table 5 describes the significant fields shown in the displays. Any data not described in Table 5 is used for internal debugging purposes.

Table 5 show pppoe statistics Field Descriptions

Field

Description

INVALID

Errors in the segment handling state machine; this field typically displays a zero.

PRE-SERVICE FOUND

Number of occurrences of PPPoE service policy having been located and configuration data having been read from the external server to the bba-group profile.

PRE-SERVICE NONE

Number of failures of PPPoE service policy profile configuration read from the external server .

SSS CONNECT LOCAL

Subscriber service switch (SSS) connections that received loca l termination directives.

SSS FORWARDING

SSS connections that received forwarding notification.

SSS FORWARDED

SSS connections that received forwarded notification.

SSS MORE KEYS

PPPoE sessions that are in the intermediate state, processing service keys, before a session is forwarded or terminated locally.

SSS DISCONNECT

PPPoE sessions disconnected after receiving a disconnect notification from the subscriber service switch.

CONFIG UPDATE

PPPoE sessions receiving serving policy configuration updates.

STATIC BIND RESPONSE

Number of responses that the interface is bound to the PPP session.

PPP FORWARDING

PPPoE sessions in the forwarding state.

PPP FORWARDED

Forwarded PPPoE sessions.

PPP DISCONNECT

PPPoE sessions disconnected after receiving a disconnect message from the state machine.

PPP RENEGOTIATION

PPPoE sessions renegotiated after receiving a renegotiation message from the state machine.

SSM PROVISIONED

Segment switching manager (SSM) response that the dataplane has been initialized.

SSM UPDATED

SSM response that the dataplane has been successfully updated.

SSM DISCONNECT

Dataplane disconnects from PPPoE sessions.

SSS Request

SSS requests to determine if a call is to be forwarded or locally terminated.

SSS Response Stale

SSS responses received for sessions that are already freed.

SSS Disconnect

SSS disconnect messages to PPPoE sessions.

PPPoE Handles Allocated

Handles assigned for PPPoE sessions.

PPPoE Handles Freed

Handles freed for PPPoE sessions.

Dynamic Bind Request

PPPoE requests to start PPP sessions.

Static Bind Request

PPPoE requests to bind interfaces to PPP sessions

SSS

Related Commands

Command

Description

clear pppoe statistics

Clears PPPoE statistics.

subscriber redundancy

To configure broadband subscriber session redundancy policy for high availability (HA) synchronization between active and standby processors, use the subscriber redundancy command in global configuration mode. To delete the policy, use the no form of this command.

subscriber redundancy [bulk limit cpu percentage delay seconds allow value] [dynamic limit cpu percentage delay seconds allow value] [delay time] [rate sessions time]
no subscriber redundancy
Syntax Description

bulk

(Optional) Configures bulk synchronization redundancy policy.

dynamic

(Optional) Configures dynamic synchronization redundancy policy.

limit cpu percent

(Optional) Specifies CPU busy threshold value as a percentage. Range 0 to 100, default 90.

delay seconds

(Optional) Specifies delay in seconds before the CCM component synchronizes sessions after the CPU busy threshold is exceeded.

allow value

(Optional) Specifies the minimum number of sessions to synchronize once the CPU busy threshold is exceeded and the specified delay is met. Range is 1 to 2,147,483,637, default is 25.

delay time

(Optional) Specifies minimum amount of time in seconds that a session must be ready before dynamic synchronization occurs. Range is 1 to 33,550.

rate sessions time

(Optional) Specifies number of sessions per time period for bulk and dynamic synchronization .

•sessions—Range 1 to 32,000, default is 250.

•time—Range in seconds is 1 to 33,550, default is 1.

Command Default

Subscriber redundancy policy applies default values.

Command Modes

Global configuration

Command History

Release

Modification

12.2(31)SB2

This command was introduced.

Usage Guidelines

Cisco IOS HA functionality for broadband protocols and applications allows for stateful switchover (SSO) and in service software upgrade (ISSU) features that minimize planned and unplanned downtime and failures. HA uses the cluster control manager (CCM) to manage the capability to synchronize subscriber session bring up on the standby processor of a redundant processor HA system. Use the subscriber redundancy bulk command to create and modify redundancy policy used during bulk (startup) synchronization. Use the subscriber redundancy dynamic command to tune subscriber redundancy policies that throttle dynamic synchronization by monitoring CPU usage and sync rates. Use the subscriber redundancy delay command to establish session duration minimums for synchronization and manage dynamic syncing of short duration calls. Use the subscriber redundancy rate command to throttle the number of sessions to be synchronized per period.

Examples

The following example configures a 10 second delay when CPU usage exceeds 90 percent during bulk synchronization, after which 25 sessions will be synced before the CCM again checks CPU usage:
Router(config)# subscriber redundancy bulk limit cpu 90 delay 10 allow 25
The following example configures a minimum session duration of 15 seconds before dynamic synchronization to the standby processor:
Router(config)# subscriber redundancy dynamic 15
The following example configures 2000 sessions to be synchronized per second during bulk and dynamic synchronization:

Router(config)# subscriber redundancy rate 2000 1

Related Commands

Command

Description

show ccm sessions

Displays CCM session information

show ppp subscriber statistics

Displays PPP subscriber statistics

show pppatm statistics

Displays PPPoA statistics

show pppoe statistics

Displays PPPoE statistics

Feature Information for Cisco IOS Broadband High Availability Stateful Switchover

Table 6 lists the release history for this feature.

Not all commands may be available in your Cisco IOS software release. For release information about a specific command, see the command reference documentation.

Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which Cisco IOS and Catalyst OS software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

Note Table 6 lists only the Cisco IOS software release that introduced support for a given feature in a given Cisco IOS software release train. Unless noted otherwise, subsequent releases of that Cisco IOS software release train also support that feature.

Table 6 Feature Information for the Cisco IOS Broadband High Availability Stateful Switchover Feature

Feature Name

Releases

Feature Information

Cisco IOS Broadband High Availability Stateful Switchover

12.2(31)SB2

The Cisco IOS Broadband High Availability (HA) Stateful Switchover (SSO) feature provides the capability for dual route processor systems to support stateful switchover of PPPoX sessions, and allow applications and features to maintain state while system control and routing protocol execution is transferred between an active and a standby processor.

Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.

© 2006 Cisco Systems, Inc. All rights reserved.

Hierarchical Navigation

Cisco IOS Software Releases 12.2 SB

Cisco IOS Broadband High Availability Stateful Switchover

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Table Of Contents

Cisco IOS Broadband High Availability Stateful Switchover

Contents

Prerequisites for Cisco IOS Broadband High Availability Stateful Switchover

Restrictions for Cisco IOS Broadband High Availability Stateful Switchover

Information About Cisco IOS Broadband High Availability Stateful Switchover

Feature Design of Cisco IOS Broadband High Availability Stateful Switchover

Supported Broadband Aggregation Protocols

SSO PPPoA

SSO PPPoE

SSO RA-MLPS VPN

Benefits of Cisco IOS Broadband High Availability Stateful Switchover

How to Configure Cisco IOS Broadband High Availability Stateful Switchover

Configuring Subscriber Redundancy Policy for Broadband HA Stateful Switchover

SUMMARY STEPS

DETAILED STEPS

Verifying and Troubleshooting Subscriber Redundancy Policy for Broadband HA Stateful Switchover

SUMMARY STEPS

DETAILED STEPS

Configuration Examples for Cisco IOS Broadband High Availability Stateful Switchover

PPPoX Terminated into an RA-MPLS Network with SSO: Example

Additional References

Related Documents

Standards

MIBs

RFCs

Technical Assistance

Command Reference

clear ppp subscriber statistics

Syntax Description

Command Modes

Command History

Usage Guidelines

Examples

Related Commands

clear pppatm statistics

Syntax Description

Command Modes

Command History

Usage Guidelines

Examples

Related Commands

clear pppoe statistics

Syntax Description

Command Modes

Command History

Usage Guidelines

Examples

Related Commands

debug pppatm redundancy

Syntax Description

Command Modes

Command History

Usage Guidelines

Examples

debug pppoe redundancy

Syntax Description

Command Modes

Command History

Usage Guidelines

Examples

show ccm clients

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Examples

Related Commands

show ccm queues

Syntax Description

Command Modes

Command History

Usage Guidelines

Examples

Related Commands