CoreSW Troubleshooting

とりあえずは vrrp の状態を確認する vrrp/hsrp が切り替わっているかを確認する

cisco

nx# show hsrp detail ipv4 | section VlanXXX
Vlan208 - Group 0 (HSRP-V2) (IPv4)
  Local state is Active, priority 200 (Cfged 200), may preempt
    Forwarding threshold(for vPC), lower: 1 upper: 200
  Preemption Delay (Seconds) Minimum:120
  Hellotime 3 sec, holdtime 10 sec
  Next hello sent in 0.717000 sec(s)
  Virtual IP address is xx.xx.xx.xx (Cfged)
  Active router is local
  Standby router is xx.xx.xx.xx , priority 100 expires in 8.970000 sec(s)
  Authentication text "cisco"
  Virtual mac address is xxxx.xxxx.xxxx (Default MAC)
  4 state changes, last state change 1y44w <-
  IP redundancy name is hsrp-VlanXXX-0 (default)
  IP redundancy name is hsrp-VlanXXX-0 (default)

arista

ari# show vrrp int Vlan xxx
  Last state transaction was Xdays, XX:XX:XX ago <-

mac-table も確認する

show ip arp | i xxx.xxx.xxx.xxx
show mac address-table | i xxxx.xxxx.xxxx
  xxx xxxx.xxxx.xxxx x days, XX:XX:XX ago <-