STANDBY-3-DUPADDR
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From: Sarastra Maya on 30 Apr 2007 10:22 Any way to troubleshoot this error? Any idea what this is? Apr 24 23:36:14 CDT: %STANDBY-3-DUPADDR: Duplicate address 192.168.24.4 on Vlan1 0, sourced by 00d0.015d.2ffc Apr 24 23:36:44 CDT: %STANDBY-3-DUPADDR: Duplicate address 192.168.57.4 on Vlan6 2, sourced by 0000.0c07.ac00 Apr 24 23:37:20 CDT: %STANDBY-3-DUPADDR: Duplicate address 192.168.82.4 on Vlan2 3, sourced by 00d0.015d.2ffc Apr 24 23:37:55 CDT: %STANDBY-3-DUPADDR: Duplicate address 192.168.18.4 on Vlan7 , sourced by 0000.0c07.ac00] Thanks!
From: Thrill5 on 30 Apr 2007 11:01 On VLAN 6 and VLAN 7 it could be that the standby group is not the same on both routers running HSRP. VLAN 1 and VLAN2 are sourced with the same MAC address, so this is the same router. Looks like you have an VLAN 1 and VLAN 2 being bridged together somewhere. Scott "Sarastra Maya" <k40n30(a)gmail.com> wrote in message news:1177942933.248102.210280(a)y80g2000hsf.googlegroups.com... > Any way to troubleshoot this error? Any idea what this is? > > > Apr 24 23:36:14 CDT: %STANDBY-3-DUPADDR: Duplicate address > 192.168.24.4 on Vlan1 > 0, sourced by 00d0.015d.2ffc > Apr 24 23:36:44 CDT: %STANDBY-3-DUPADDR: Duplicate address > 192.168.57.4 on Vlan6 > 2, sourced by 0000.0c07.ac00 > Apr 24 23:37:20 CDT: %STANDBY-3-DUPADDR: Duplicate address > 192.168.82.4 on Vlan2 > 3, sourced by 00d0.015d.2ffc > Apr 24 23:37:55 CDT: %STANDBY-3-DUPADDR: Duplicate address > 192.168.18.4 on Vlan7 > , sourced by 0000.0c07.ac00] > > Thanks! >
From: Andrey Tarasov on 30 Apr 2007 11:06 Sarastra Maya wrote: > Any way to troubleshoot this error? Any idea what this is? > > > Apr 24 23:36:14 CDT: %STANDBY-3-DUPADDR: Duplicate address > 192.168.24.4 on Vlan1 > 0, sourced by 00d0.015d.2ffc > Apr 24 23:36:44 CDT: %STANDBY-3-DUPADDR: Duplicate address > 192.168.57.4 on Vlan6 > 2, sourced by 0000.0c07.ac00 > Apr 24 23:37:20 CDT: %STANDBY-3-DUPADDR: Duplicate address > 192.168.82.4 on Vlan2 > 3, sourced by 00d0.015d.2ffc > Apr 24 23:37:55 CDT: %STANDBY-3-DUPADDR: Duplicate address > 192.168.18.4 on Vlan7 > , sourced by 0000.0c07.ac00] Classical case of loop at layer 2. Check your spanning tree configuration. Andrey.
From: Sarastra Maya on 30 Apr 2007 12:04 Thanks guys! I also want to point out that I have 3 core switches (running HSRP).. Now this is very likely as Andrey pointed out ....spanning tree issue. I just need to know best way to fix it...now :)
From: Andrey Tarasov on 30 Apr 2007 22:32
Sarastra Maya wrote: > Thanks guys! > > I also want to point out that I have 3 core switches (running HSRP).. > > Now this is very likely as Andrey pointed out ....spanning tree issue. > I just need to know best way to fix it...now :) Since you didn't mention complete network meltdown, my guess is it's some kind of transient issue. Make sure you don't have switches running with high CPU utilization, switches with more VLANs that they can support STP instances for, etc. Here is nice article at cisco.com - http://cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a0080136673.shtml Regards, Andrey. |