%CSM_SLB-4-ARPCONFIG

Unanswered Question
Sep 8th, 2010

Two 7606 work as active/standby bundle. After changing supervisor on the first 7606 and reloading both chassis messages filled log.


%CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway
ip(0xac189d8a). Already exists in arp cache. Please check configuration.

Where is problem?
I have this problem too.
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Giuseppe Larosa Wed, 09/08/2010 - 05:45

Hello Anton,

you have CSM modules in your two chassis, haven't you?

the message is about an ARP entry used by CSM you can decode the IP address as 172.24.157.138 by converting from exadecimal.

this VIP is probably a default gateway offered by MSFC to CSM (this depends if you use the CSM in bridged mode or routed mode).

Are the log messages still appearing in syslog?

I mean new occurrences of the message

Hope to help

Giuseppe

Antonsibir Wed, 09/08/2010 - 05:51

Hello Giuseppe,

>you have CSM modules in your two chassis, haven't you?

No, I have these modules:

------------------ show module ------------------


Mod Ports Card Type                              Model            
--- ----- -------------------------------------- ------------------ -----------
  1   48  CEF720 48 port 10/100/1000mb Ethernet  WS-X6748-GE-TX    
  2    3  MWAM Module                            WS-SVC-MWAM-1     
  3    4  Content Services Gateway               WS-SVC-CSG-1      
  5    2  Supervisor Engine 720 (Active)         WS-SUP720-3BXL   

>Are the log messages still appearing in syslog?

Yes, there are a lot of message which occur constantly

Sep  8 09:36:31.856: %CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway ip(0xac189d8a). Already exists in arp cache. Please check configuration.
Sep  8 09:36:34.484: %CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway ip(0xac189d8a). Already exists in arp cache. Please check configuration.
Sep  8 09:36:34.856: %CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway ip(0xac189d8a). Already exists in arp cache. Please check configuration.
Sep  8 09:36:37.860: %CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway ip(0xac189d8a). Already exists in arp cache. Please check configuration.
Sep  8 09:36:40.856: %CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway ip(0xac189d8a). Already exists in arp cache. Please check configuration.
Sep  8 09:36:43.880: %CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway ip(0xac189d8a). Already exists in arp cache. Please check configuration.
Sep  8 09:36:44.064: %CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway ip(0xac189d8a). Already exists in arp cache. Please check configuration.
Sep  8 09:36:46.860: %CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway ip(0xac189d8a). Already exists in arp cache. Please check configuration.
Sep  8 09:36:49.860: %CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway ip(0xac189d8a). Already exists in arp cache. Please check configuration.
Sep  8 09:36:52.808: %CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway ip(0xac189d8a). Already exists in arp cache. Please check configuration.
Sep  8 09:36:52.856: %CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway ip(0xac189d8a). Already exists in arp cache. Please check configuration.
Sep  8 09:36:55.856: %CSM_SLB-4-ARPCONFIG: Module 3 ARP configuration error: HSRP: Can't install buddy HSRP gateway ip(0xac189d8a). Already exists in arp cache. Please check configuration.

Antonsibir Wed, 09/08/2010 - 07:55

I have noted that 172.24.157.138 is address of MWAM in this chassis.

interface GigabitEthernet0/0.102
encapsulation dot1Q 102
ip address 172.24.157.138 255.255.255.248
no snmp trap link-status

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