---------------------| |------------
msfc1(.249)----| |msfc3(.251)
--------------------|-trunk---|------------
msfc2(.250)----| |msfc4(.252)
----- ---------------| |------------
HSRP are configed on all four msfc of 6509 which ios version is 12.1(2)E ,one is active,one is standby and other two msfc is listen.
pc6:one pc of vlan 6,ip is 10.1.6.2
pc1:one pc of vlan 1,ip is 10.1.1.2
HSRP of vlan 6:
.251 is active,.250 is standby,.249 and .252 is listen
HSRP of vlan 1:
.252 is active,.249 is standby,.250 and .251 is listen
when I ping(s=10.1.6.2,d=10.1.1.2),ping will always fail,and arp entry of 10.1.6.2 is not exist on msfc4 ,
BUT if I ping(s=10.1.6.2,d=10.1.6.252),ping success,then ping(s=10.1.6.2,d=10.1.1.2) will success.
I think the packet flow is:
pc6---.253 of vlan 6-----.251 of vlan 1----pc1----.253 of vlan 1-----.252 of vlan 6--?????(I think arp doesn't do)--pc6
so I think maybe listen router will do nothing about arp.
I use bug toolkit to find nothing about it.
anybody can help me? thanks,and any comment is appreciated.
flowchart:
msfc3#sh standby brief
P indicates configured to preempt.
|
Interface Grp Prio P State Active addr Standby addr Group addr
Vlan1 1 50 P Listen 10.1.1.252 10.1.1.249 10.1.1.253
Vlan6 2 200 P Active local 10.1.2.250 10.1.2.253
msfc3#sh ip arp | include 10.1.1.2
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.1.1.2 4 0030.6e01.cd99 ARPA Vlan1
msfc3#sh ip arp | include 10.1.6.2
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.1.6.2 4 0030.6e01.f899 ARPA Vlan6
msfc4#sh standby brief
P indicates configured to preempt.
|
Interface Grp Prio P State Active addr Standby addr Group addr
Vlan1 1 200 P Active local 10.1.1.249 10.1.1.253
Vlan6 6 50 P Listen 10.1.6.251 10.1.6.250 10.1.6.253
msfc4#sh ip arp | include 10.1.1.2
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.1.1.2 4 0030.6e01.cd99 ARPA Vlan1
msfc4#sh ip arp | include 10.1.6.2
msfc4#****nothing******
ping(s=10.1.6.2 d=10.1.1.2) fail
msfc4#sh ip arp | include 10.1.6.2
msfc4#*****nothing******
ping(s=10.1.6.2,d=10.1.6.252) successs
msfc4#sh ip arp | include 10.1.6.2
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.1.6.2 1 0001.030e.5c8e ARPA Vlan6
then:
ping(s=10.1.6.2 d=10.1.1.2) success
