08-11-2012 03:00 AM - edited 03-07-2019 08:17 AM
Hi
Having 2 router with 2 sub interface configured with HSRP
The server seding the data have the route default gw xxx.xxx.xx.252 HSRP adress.
but on of the routers did got HW problem so we did shut it down, R2 with IP xxxx.xxxx.xxxx.251, problem so the traffic didnt go thure correct when was using the HSRP adress some packaged went thure but not all of them no blocks in the logs.
But then we did change the servern direct to to the working router R1 xxxx.xxxx.253 everything did start working fine again.
was working fine.
Logs i got in the router was
max tcp half-open connections
Iam wondering if i can get some ideas or help if something can be wrong in the configuration below and wondering why the traffic didnt
got thure correct when using the HSRP adress. Its working fine when using R1 IP adress.
The devices are 2 cisco 2620 routers.
R!1
interface FastEthernet0/0.192
description Prod_Inside
encapsulation dot1Q 192
ip address xxx.xxx.xxx.253 255.255.255.192
ip access-group Inside_Outside in
ip verify unicast reverse-path
no ip redirects
no ip unreachables
no ip proxy-arp
ip inspect Inside2Outside in
standby 93 ip xxx.xxx.xxx.252
standby 93 preempt
standby 93 authentication xxxxxx
standby 93 track Ethernet1/0
standby 93 track FastEthernet0/0.99
R2
interface FastEthernet0/0.192
description Prod_Inside
encapsulation dot1Q 192
ip address xxx.xxx.xxx.251 255.255.255.192
ip access-group Inside_Outside in
ip verify unicast reverse-path
no ip redirects
no ip unreachables
no ip proxy-arp
ip inspect Inside2Outside in
standby 93 ip xxx.xxx.xxx.252
standby 93 priority 105
standby 93 preempt
standby 93 authentication xxxxxxxx
standby 93 track Ethernet1/0
standby 93 track FastEthernet0/0.99
ip inspect one-minute high 100000
ip inspect one-minute low 70000
ip inspect tcp idle-time 1800
ip inspect name Dmz2Inside tcp
ip inspect name Dmz2Inside ftp
ip inspect name Inside2Outside tcp
ip inspect name Inside2Outside icmp
ip inspect name Inside2Outside ftp
ip inspect name Babs2Inside tcp
ip audit po max-events 100
08-16-2012 08:18 AM
hi,
tried to understand your situation but guess need some help.
so you have 2 routers, they are connected to a switch via trunk connections. on the switch there are 2 vlans and you have created 2 subinterfaces on the routers in order to be able to route between the vlans.
on the .192 subinterface you have enabled HSRP and made R2 the active router.
then you had to shut down R2, but R1 didnt take over as the active router?
all the hosts(server) had as GW address the virtual HSRP address configured, but now you had to change it and entered the real ip of R1 as GW. is that correct so far?
08-17-2012 05:28 AM
Thank you for your answer.
The problem is now solved, it was caused by asymmetric routing.
08-17-2012 05:53 AM
glad to hear that!
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide