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SVI in HSRP not able to ping between N7K Pairs (Directly Connected)

Unanswered Question
Sep 3rd, 2013
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HI,

     We have two Data Center Zones which are connected from two pairs of nexus 7018 (See Diagram).

Both N7K Pairs have Cris-Cross Connectivity by Long Haul SFPs. All these Links in both N7K Pairs are in a single Port-Channel with same vPC.


Now, we ahave passed a VLAN from Port-Channel & created SVIs in  both N7K Pairs (All four N7Ks in total) with HSRP running between same Zone SVIs.


Like:


DC1:

interface vlan10

VRF XXXX

HSRP version 1

HSRP Group 1


DC2:

VRF YYYY

interface vlan10

HSRP vesion 1

HSRP Group 2


The IPs for SVI 10 is a /29 subnet (all in same subnet).


But when i try to ping SVI of any one Zone from other Zone, I get "Destination Host Unreachible"????


vPC Domain numbers in both Zones are different at least in N7K Switches. And in between same Zone N7K, I have configured VPC-PEER command only.


Kindly help me as I want to have reachibility of SVIs, further I need to extend some more Internal Zones.

I am new to vPC, kindly help in detail please.

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Marwan ALshawi Wed, 09/04/2013 - 09:47
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Hi there

your design a bit confusing, because I can't see where is L3 in your network has to be

anyway if you plan to have one HSRP group across the two zones/domain in this case yo need to have the active and standby in one DC/Zone and the third and forth HSRP will be in the other DC/zone in listening mode ( not dose not forward )


other option is to have differnt group number in each DC/zone, using same subent and differnt VIP in each Zone

in this case you can have the active and standby local to each DC/zone on each N7K pair


hope this helps

Rajeev Payal Wed, 09/04/2013 - 11:02
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HI,

     We are trying to have II Option.As i have mentioned in my ist post, we have different Standby Group Numbers in each DC/Zone & we use same subnet (/29) with different VIPs in each DC/Zone. The SVIs in each Zone/Group are in different VRF.

    But i am unable to ping other Zone VIP or SVI IP , i don;t know why? also there is no ARP entry for other Zone as well.

What am i missing?

I will paste the Config i done tomarrow.    

Marwan ALshawi Thu, 09/05/2013 - 01:32
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if they are in differnt VRFs you can not ping

but if the inter switch is L2 for same vlan they you can

are you using ping with source VRF ? as normal ping will use the global routing table

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