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AlexBar76
Beginner

HSRP CISCO 1921 ICMP Problems

Hi 

I'm in trouble with this simple config 

I had two sites connected via customer LAN in L2, in those sites i had two cisco 1921 configured in HSRP 

the default gw for the network is the vip 10.240.0.254 see the attached schema and config 

the HSRP works fine but from the client connected on site b ( L2) cannot ping the hsrp address but onli the phisical one ( 253) 

meanwile from clients in site A i can ping it 

any help ??

 

Thanks in advice

Alessandro

1 ACCEPTED SOLUTION

Accepted Solutions
AlexBar76
Beginner

Thanks to all for the support, I've solve the problem modify the  conf, remove the hsrp configuration and re-insert It again in both routers

and now it's works 

 

 

 

View solution in original post

9 REPLIES 9
balaji.bandi
VIP Guru

I do not believe that works as expected.,  can you also elaborate which one site A and Site B ?

 

check below deployment method :

 

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/xe-3s/fhp-xe-3s-book/fhp-hsrp.html

 

BB

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Site A it's the right one 

I can attach the HSRP config here and the debug HSRP output

 

SITE A

interface GigabitEthernet0/0
description $ETH-LAN$
ip address 10.240.0.253 255.255.255.0
standby 150 ip 10.240.0.254
standby 150 priority 105
standby 150 preempt
standby 150 authentication HSRP
duplex auto
speed auto
!

SITE B

interface GigabitEthernet0/0
description $ETH-LAN$
ip address 10.240.0.252 255.255.255.0
standby 150 ip 10.240.0.254
standby 150 authentication HSRP
duplex auto
speed auto
!

May 3 10:05:43.499: HSRP: Gi0/0 Grp 150 Hello in 10.240.0.252 Standby pri 100 vIP 10.240.0.254
May 3 10:05:44.139: HSRP: Gi0/0 Grp 150 Hello out 10.240.0.253 Active pri 105

May 3 10:05:46.107: HSRP: Gi0/0 Grp 150 Hello in 10.240.0.252 Standby pri 100 vIP 10.240.0.254
May 3 10:05:47.115: HSRP: Gi0/0 Grp 150 Hello out 10.240.0.253 Active pri 105

May 3 10:05:49.483: HSRP: Gi0/0 Interface adv in, Passive, active 0, passive 1,

You need to change the topology to work for the end device network

 

where is your Middle switch Located, how far is this Router located in Site A and Site B ?

 

My suggestion your Edge device switch is required to connect to the switch, for visibility of the network. (is this possible ?)

 

 

BB

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Flavio Miranda
Advisor

Hi

 When you try to ping the VIP, does the ARP is filled or it remains blank? 

I see the virtual MAC filled on ARP table of the switches and goes trougth the network

i have two different geographic sites connected via layer2 

this L2 connection is between the two routers in the ge0/0 interface

 

MHM Cisco World
Advisor

this never work, I think you have two site use same subnet "subnet overlap" 
you need L2TPv3 to make this work.

AlexBar76
Beginner

Why ? It's a normal site with two router in the same Subnet as also CISCO show in HSRP docs 

i have also other sites in the same way and they works 

"Other Site the same way"
Other Site use L3SW as HSRP peer not router. 
or 
other side use Router with SVI not route port

what that meaning,
PC1 send broadcast ask Mac address of PC2 and since there is L2 connection the broadcast will go to PC2 and PC2 reply with it MAC address and connection happened.
HSRP VIP use only by PC1 and PC2 if both PC want to connect to out subnet there are in.

AlexBar76
Beginner

Thanks to all for the support, I've solve the problem modify the  conf, remove the hsrp configuration and re-insert It again in both routers

and now it's works