Hi,
we currently have an internet access with 2 ISP composed of two routers 2821(Version 12.4(11)T) running BGP ( we have an ASN) .
We are running two HRSP groups on the pair of routers.
Once in a while we lose internet access for a couple of minutes and the problem seems to be related to HSRP.
**First MRTG shows that router 1 generates a lot of traffic ( 80 Mb/s) for 5 minutes.**Router 1 traps shows that HSRP is toggleing from active to standby for group 2 only
2007-06-02 18:34:50 Local7.No-tice x.x.56.3 261: Jun 2 2007 18:34:49.249 EDT: %HSRP-5-STATECHANGE: GigabitEthernet0/1 Grp 2 state Standby -> Active 2007-06-02 18:34:53 Local7.Notice x.x.56.3 262: Jun 2 2007 18:34:52.301 EDT: %HSRP-5-STATECHANGE: GigabitEthernet0/1 Grp 2 state Active -> Speak 2007-06-02 18:35:03 Local7.Notice x.x.56.3 263: Jun 2 2007 18:35:02.301 EDT: %HSRP-5-STATECHANGE: GigabitEthernet0/1 Grp 2 state Speak -> Standby 2007-06-02 18:35:13 Local7.Notice x.x.56.3 264: Jun 2 2007 18:35:12.301 EDT: %HSRP-5-STATECHANGE: GigabitEthernet0/1 Grp 2 state Standby -> Active 2007-06-02 18:35:22 Local7.Notice x.x.56.3 265: Jun 2 2007 18:35:21.273 EDT: %HSRP-5-STATECHANGE: GigabitEthernet0/1 Grp 2 state Active -> Speak 2007-06-02 18:35:32 Local7.Notice x.x.56.3 266: Jun 2 2007 18:35:31.278 EDT: %HSRP-5-STATECHANGE: GigabitEthernet0/1 Grp 2 state Speak -> Standby 2007-06-02 18:35:35 Local7.Notice x.x.56.3 267: Jun 2 2007 18:35:34.262 EDT: %HSRP-5-STATECHANGE: GigabitEthernet0/1 Grp 2 state Standby -> Active 2007-06-02 18:36:02 Local7.Notice x.x.56.3 268: Jun 2 2007 18:36:01.386 EDT: %HSRP-5-STATECHANGE: GigabitEthernet0/1 Grp 2 state Active -> Speak 2007-06-02 18:36:12 Local7.Notice x.x.56.3 269: Jun 2 2007 18:36:11.398 EDT: %HSRP-5-STATECHANGE: GigabitEthernet0/1 Grp 2 state Speak -> Standby***Router 1 - There is no state changes on Group 1 but 514 on group 2
GigabitEthernet0/1 - Group 1 State is Active 1 state change, last state change 16w5d Virtual IP address is x.x.56.1 Active virtual MAC address is 0000.0c07.ac01 Local virtual MAC address is 0000.0c07.ac01 (v1 default) Hello time 3 sec, hold time 10 sec Next hello sent in 2.700 secs Preemption enabled Active router is local Standby router is x.x.56.4, priority 100 (expires in 8.476 sec) Priority 140 (configured 140) Track interface GigabitEthernet0/0 state Up decrement 50 IP redundancy name is "hsrp-Gi0/1-1" (default) GigabitEthernet0/1 - Group 2 State is Standby 514 state changes, last state change 1d21h Virtual IP address is x.x.56.2 Active virtual MAC address is 0000.0c07.ac02 Local virtual MAC address is 0000.0c07.ac02 (v1 default) Hello time 3 sec, hold time 10 sec Next hello sent in 1.460 secs Preemption enabled Active router is x.x.4, priority 140 (expires in 7.644 sec) Standby router is local Priority 100 (default 100) IP redundancy name is "hsrp-Gi0/1-2" (default)
***Router 2 - No state changes on either groupGigabitEthernet0/1 - Group 1 State is Standby 4 state changes, last state change 14w3d Virtual IP address is x.x.56.1 Active virtual MAC address is 0000.0c07.ac01 Local virtual MAC address is 0000.0c07.ac01 (v1 default) Hello time 3 sec, hold time 10 sec Next hello sent in 2.592 secs Preemption enabled Active router is x.x.56.3, priority 140 (expires in 9.800 sec) Standby router is local Priority 100 (default 100) IP redundancy name is "hsrp-Gi0/1-1" (default) GigabitEthernet0/1 - Group 2 State is Active 2 state changes, last state change 16w5d Virtual IP address is x.x.56.2 Active virtual MAC address is 0000.0c07.ac02 Local virtual MAC address is 0000.0c07.ac02 (v1 default) Hello time 3 sec, hold time 10 sec Next hello sent in 1.764 secs Preemption enabled Active router is local Standby router is x.x.56.3, priority 100 (expires in 9.420 sec) Priority 140 (configured 140) Track interface Serial1/0.500 state Up decrement 50 IP redundancy name is "hsrp-Gi0/1-2" (default)
*** Here is the Router 1 config standby 1 ip x.x.56.1 standby 1 priority 140 standby 1 preempt standby 1 track GigabitEthernet0/0 50 (WAN ISP1) standby 2 ip x.x.56.2 standby 2 preempt***And Router 2 config standby 1 ip x.x.56.1 standby 1 preempt standby 2 ip x.x.56.2 standby 2 priority 140 standby 2 preempt standby 2 track Serial1/0.500 50 (WAN ISP2)
Does anyone have an idea why Router 1 HSRP is going crazy ? It seems to lose contact with Router 2 but only for group 2 , group 1 still works.
And it happens like once every two weeks. always at different times , days or weekends...
Any hints ? Thanks