Thread: [Keepalived-devel] Keepalived and Cisco Switches

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Hi,

I've encountered some flapping problems with Keepalived v1.1.1 (on RH 
Linux 7.3 Kernel 2.4.18-5) when used with  Cisco 2948  & C3548-XL switches.

Both Master and Backup PC's use 3COM 905C NICS. As an experiment I tried 
' ifconfig eth2 down'. on the Backup system  to check it recovered from 
a FAULT state.  The system went into FAULT state as expected, but I when 
I  exec'd 'ifconfig eth2 up', keepalived initially went to Backup state, 
then started oscillating between MASTER and BACKUP state.

I fixed the problem by increasing the advert_int to 35 seconds (on both 
Master and Backup system). The problem with this is when Keepalived is 
started
the VIPs obviously take much longer to start than if the advert_int is 
set to 5 seconds.

Has anybody else come across this?

I'd grateful for suggestions as to what to investigate, as I quite like 
to set the advert_int back to 5 seconds

Cheers

Shaun

! Configuration File for keepalived

global_defs {
   notification_email {
        sh...@na...
   }
   smtp_server 192.168.200.92
   smtp_connect_timeout 30
   lvs_id OCTOPUSSY2
}

vrrp_sync_group G1 {
  group {
        VI_11
        VI_12
        VI_13
        VI_14
        VI_15
        VI_16
  }
  smtp_alert
}

vrrp_instance VI_11 {
    state BACKUP
    track_interface {
        eth0
    }
    interface eth0.4
    mcast_src_ip 10.32.5.252
    garp_master_delay 1
    virtual_router_id 11
    priority 100
    advert_int 35
    authentication {
        auth_type AH
        auth_pass <PW>
    }
    virtual_ipaddress {
       10.32.5.254/23
    }
}

vrrp_instance VI_12 {
    state BACKUP
    interface eth0.6
    track_interface {
        eth0
    }
    mcast_src_ip 10.32.7.252
    garp_master_delay 1
    virtual_router_id 12
    priority 100
    advert_int 35
    authentication {
        auth_type AH
        auth_pass <PW>
    }
    virtual_ipaddress {
       10.32.7.254/23
    }
}

vrrp_instance VI_13 {
    state BACKUP
    interface eth0.8
    track_interface {
        eth0
    }
    mcast_src_ip 10.32.9.252
    garp_master_delay 1
    virtual_router_id 13
    priority 100
    advert_int 35
    authentication {
        auth_type AH
        auth_pass <PW>
    }
    virtual_ipaddress {
       10.32.9.254/24
    }
}

vrrp_instance VI_14 {
    state BACKUP
    track_interface {
        eth1
    }
    interface eth1
    mcast_src_ip 10.32.0.252
    garp_master_delay 1
    virtual_router_id 14
    priority 100
    advert_int 35
    authentication {
        auth_type AH
        auth_pass <PW>
    }
    virtual_ipaddress {
       10.32.0.254/24
    }
    virtual_routes {
       0.0.0.0/0 via 10.32.0.200 dev eth1
    }
}

vrrp_instance VI_15 {
    state BACKUP
    track_interface {
        eth2
    }
    interface eth2.104
    virtual_router_id 15
    mcast_src_ip 192.168.200.252
    garp_master_delay 1
    priority 100
    advert_int 35
    authentication {
        auth_type AH
        auth_pass <PW>
    }
    virtual_ipaddress {
       192.168.200.254/24
    }
    virtual_routes {
        172.16.1.0/24 via 192.168.200.8 dev eth2.104
        172.16.2.0/24 via 192.168.200.8 dev eth2.104
        10.0.0.0/16   via 192.168.200.8 dev eth2.104
    }
}

vrrp_instance VI_16 {
    state BACKUP
    track_interface {
        eth2
    }
    interface eth2.120
    mcast_src_ip 10.0.12.252
    virtual_router_id 16
    garp_master_delay 1
    priority 100
    advert_int 35
    authentication {
        auth_type AH
        auth_pass <PW>
    }
    virtual_ipaddress {
       10.0.12.254/24
    }
}

Thread: [Keepalived-devel] Keepalived and Cisco Switches

keepalived-devel