Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
New Member

IP SLA DNS Query error, wrong source-ip

Hello,

I have a router with IP SLA configured. Configuration is as follows :

ip sla 2

http get http://www.cisco.com source-ip A.A.A.A name-server B.B.B.B

tag WEB

ip sla schedule 2 life forever start-time now

A.A.A.A is a public IP address configured on g0/1 interface (which is up/up) and B.B.B.B a valid DNS server.

Ping ok to the DNS server with A.A.A.A as the source address.

Instead of using the source-ip A.A.A.A, the router uses another one (C.C.C.C configured on the g0/0 interface, private IP address) even if it's not configured on the IP SLA parameters.

Here is the debug :

Jun  1 16:06:53 MEZ: IPSLA-INFRA_TRACE:OPER:2 slaSchedulerEventWakeup

Jun  1 16:06:53 MEZ: IPSLA-INFRA_TRACE:OPER:2 Starting an operation

Jun  1 16:06:53 MEZ: IPSLA-OPER_TRACE:OPER:2 Starting http operation

Jun  1 16:06:53 MEZ: IPSLA-OPER_TRACE:OPER:2 Starting dns operation

Jun  1 16:06:53 MEZ: IPSLA-OPER_TRACE:OPER:2 Query name - www.cisco.com

Jun  1 16:06:53 MEZ: IPSLA-OPER_TRACE:OPER:2 Dest: B.B.B.B, Source address - C.C.C.C

Jun  1 16:06:53 MEZ: IPSLA-OPER_TRACE:OPER:2 actual target queried = www.cisco.com

For information, the contents of show ip sla configuration 2 :

sh ip sla configuration 2

IP SLAs Infrastructure Engine-III

Entry number: 2

Type of operation to perform: http

Target address/Source address: 0.0.0.0/A.A.A.A

Target port/Source port: 80/0

Type Of Service parameters: 0x0

Vrf Name:

HTTP Operation: get

HTTP Server Version: 1.0

URL: http://www.cisco.com

Proxy:

Raw String(s):

Cache Control: enable

Owner:

Tag: WEB

Operation timeout (milliseconds): 60000

Schedule:

   Operation frequency (seconds): 60  (not considered if randomly scheduled)

   Next Scheduled Start Time: Start Time already passed

   Group Scheduled : FALSE

   Randomly Scheduled : FALSE

   Life (seconds): Forever

   Entry Ageout (seconds): never

   Recurring (Starting Everyday): FALSE

   Status of entry (SNMP RowStatus): Active

Threshold (milliseconds): 5000

Distribution Statistics:

   Number of statistic hours kept: 2

   Number of statistic distribution buckets kept: 1

   Statistic distribution interval (milliseconds): 20

History Statistics:

   Number of history Lives kept: 0

   Number of history Buckets kept: 15

   History Filter Type: None

I tried to deactivate and reactivate IP SLA parameters but without success.

Thanks for your help.

Everyone's tags (3)
834
Views
0
Helpful
0
Replies
CreatePlease to create content