09-03-2013 10:54 AM - edited 03-01-2019 07:25 AM
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.
09-03-2013 10:03 PM
Please help.
09-04-2013 09:47 AM
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
09-04-2013 11:02 AM
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.
09-05-2013 01:32 AM
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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