Intervlan routing issue

[vrg]

I have one topology where there is one l2 sw an two l3 switch, all the sw has runnign vlan 10,20,30,50,100 and hsrp is created. I have one host with l2 switch in vlan 10 and

default gateway of l2 sw is hsrp gateway 

of my management vlan which is vlan 100. all svi are created on both switches and

ip routing 

command is issued for inter vlan routing. And OSPF is configured as well for all svi. 

Now when i am trying to ping from one of device from my l2 switch ( which is in vlan 10) i am not able to ping any other svi except valn 10 svi on both l3 sw. However i can ping all the svi from my l2 sw. Also there another device connected with L3 switch it can ping all the other svi.

Can i get any suggest what wring is going on here.

[MHM Cisco World]

can I see topology please 

[vrg]

My SRV1 to entire switched network is pinging but when i try to ping any svi of any l3 switch from PC B it is not working however its working from ALS1

[MHM Cisco World]

I think there is mismatch between the active router of HSRP group of VLANx and the SPT BLK port of same VLAN.

what I meaning is the Acc-SW to Core SW is STP BLK 
can I see 

show standby 

show spanning tree

for both DLS2 and Acc-SW?

[vrg]

Here you go 

DLS1#sh standby bri
DLS1#sh standby brief
P indicates configured to preempt.
|
Interface Grp Pri P State Active Standby Virtual IP
Vl10 10 110 P Active local 172.16.10.253 172.16.10.254
Vl20 20 100 P Standby 172.16.20.253 local 172.16.20.254
Vl30 30 110 P Active local 172.16.30.253 172.16.30.254
Vl50 50 100 P Standby 172.16.50.253 local 172.16.50.254
Vl100 100 110 P Active local 172.16.100.253 172.16.100.254
DLS1#
DLS1#





DLS2#show stand bri
P indicates configured to preempt.
|
Interface Grp Pri P State Active Standby Virtual IP
Vl10 10 100 P Standby 172.16.10.252 local 172.16.10.254
Vl20 20 110 P Active local 172.16.20.252 172.16.20.254
Vl30 30 100 P Standby 172.16.30.252 local 172.16.30.254
Vl50 50 110 P Active local 172.16.50.252 172.16.50.254
Vl100 100 100 P Standby 172.16.100.252 local 172.16.100.254
DLS2#
DLS2#








DLS2#show sp
DLS2#show spanning-tree

VLAN0010
Spanning tree enabled protocol rstp
Root ID Priority 24586
Address 0017.59c1.3f80
Cost 12
Port 136 (Port-channel10)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 28682 (priority 28672 sys-id-ext 10)
Address 1cde.a7e4.2380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Po2 Desg FWD 12 128.72 P2p
Po10 Root FWD 12 128.136 P2p




VLAN0020
Spanning tree enabled protocol rstp
Root ID Priority 24596
Address 1cde.a7e4.2380
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 24596 (priority 24576 sys-id-ext 20)
Address 1cde.a7e4.2380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Po2 Desg FWD 12 128.72 P2p
Po10 Desg FWD 12 128.136 P2p




VLAN0030
Spanning tree enabled protocol rstp
Root ID Priority 24606
Address 0017.59c1.3f80
Cost 12
Port 136 (Port-channel10)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 28702 (priority 28672 sys-id-ext 30)
Address 1cde.a7e4.2380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Po2 Desg FWD 12 128.72 P2p
Po10 Root FWD 12 128.136 P2p




VLAN0050
Spanning tree enabled protocol rstp
Root ID Priority 24626
Address 1cde.a7e4.2380
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 24626 (priority 24576 sys-id-ext 50)
Address 1cde.a7e4.2380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Po2 Desg FWD 12 128.72 P2p
Po10 Desg FWD 12 128.136 P2p




VLAN0100
Spanning tree enabled protocol rstp
Root ID Priority 24676
Address 0017.59c1.3f80
Cost 12
Port 136 (Port-channel10)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 28772 (priority 28672 sys-id-ext 100)
Address 1cde.a7e4.2380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Po2 Desg FWD 12 128.72 P2p
Po10 Root FWD 12 128.136 P2p




ALS1#sho sp
ALS1#sho spanning-tree

VLAN0010
Spanning tree enabled protocol rstp
Root ID Priority 24586
Address 0017.59c1.3f80
Cost 12
Port 64 (Port-channel1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32778 (priority 32768 sys-id-ext 10)
Address 0021.a1cc.c500
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/18 Desg FWD 19 128.18 P2p Edge
Po1 Root FWD 12 128.64 P2p
Po2 Altn BLK 12 128.72 P2p




VLAN0020
Spanning tree enabled protocol rstp
Root ID Priority 24596
Address 1cde.a7e4.2380
Cost 12
Port 72 (Port-channel2)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32788 (priority 32768 sys-id-ext 20)
Address 0021.a1cc.c500
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/18 Desg FWD 19 128.18 P2p Edge
Po1 Altn BLK 12 128.64 P2p
Po2 Root FWD 12 128.72 P2p




VLAN0030
Spanning tree enabled protocol rstp
Root ID Priority 24606
Address 0017.59c1.3f80
Cost 12
Port 64 (Port-channel1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32798 (priority 32768 sys-id-ext 30)
Address 0021.a1cc.c500
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Po1 Root FWD 12 128.64 P2p
Po2 Altn BLK 12 128.72 P2p




VLAN0050
Spanning tree enabled protocol rstp
Root ID Priority 24626
Address 1cde.a7e4.2380
Cost 12
Port 72 (Port-channel2)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32818 (priority 32768 sys-id-ext 50)
Address 0021.a1cc.c500
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Po1 Altn BLK 12 128.64 P2p
Po2 Root FWD 12 128.72 P2p




VLAN0100
Spanning tree enabled protocol rstp
Root ID Priority 24676
Address 0017.59c1.3f80
Cost 12
Port 64 (Port-channel1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32868 (priority 32768 sys-id-ext 100)
Address 0021.a1cc.c500
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Po1 Root FWD 12 128.64 P2p
Po2 Altn BLK 12 128.72 P2p

[MHM Cisco World]

as I guess, 
you run L2 between two HSRP and run RSTP between ALS and DLS. 
this all make your network not work.
what you need 

1-
remove the trunk (L2) between two Core.
2- 
config router-port between two Core.
router-port meaning (no switchport)
3-
run ospf between two core using router-port
4-
using STP mode PVST between ALS and DLS's

that it you netwrok will be stable and you can ping success 

[vrg]

Sure i will do it and check. But what is the reason that my ALS1 can ping svi of DLS1 but not the device connected to ALS1. 

[MHM Cisco World]

check the SVI of ALS1 hsrp active router is it same as device connect to ALS1 ?

[vrg · Accepted solution]

Issue is resolved now, every config was fine, i just rebooted the switches and it started working fine without any problem. 

[MHM Cisco World]

just make one

SW reload 

and see if your network is stable or not 

[Martin L]

You can attach your PT file here (must be in a zip format).

Regards, ML
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