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Routing Problem L3 Catalyst 9500 with hsrp

Hi guys,

hopefully someone can help or give a hint.

 

I have a core switch Network of 4 switches connected in a ring.

SW1 and SW2 are doing hsrp and take over layer 3 functionalilty

SW3 and SW4 are only layer 2

 

SW1 VLAN 5 10.1.1.2/24 - SW1 VLAN 6 10.1.2.2/24

SW2 VLAN 5 10.1.1.3/24 - SW2 VLAN 6 10.1.2.3/24 

SW3 VLAN 5 10.1.1.4/24

SW4 VLAN 6 10.1.2.4/24 

VLAN 5 standby IP 10.1.1.1 - VLAN 6 standby IP 10.1.2.1

 

So SW1 and SW3 belong to VLAN 5 Management

and SW2 and SW4 bolong to VLAN 6 Management

 

issue:

 

SW3 can ping within it's subnet but not to SW4 with 10.1.2.4 in VLAN 6

SW4 can ping within it's subnet but not to SW3 with 10.1.1.4 in VLAN 5

 

then we have an Access switch (sw5 VLAN 5 10.1.1.5) with only layer 2 which is connected to SW1 and SW2 and this

sw5 can ping within it's subnet and to VLAN 6 SW2 10.1.2.3 but not VLAN 6 SW4 10.1.2.4

 

I guess there's a Routing issue but I have no idea at the Moment.

 

Output sw5

sw5# traceroute 10.1.2.3
Type escape sequence to abort.
Tracing the route to 10.1.2.3
VRF info: (vrf in name/id, vrf out name/id)
  1 10.1.1.2 3 msec 0 msec 4 msec
  2 10.1.1.3 3 msec *  0 msec


sw5# traceroute 10.1.2.4
Type escape sequence to abort.
Tracing the route to 10.1.2.4
VRF info: (vrf in name/id, vrf out name/id)
  1 10.1.1.2 3 msec 14 msec 4 msec
  2  *  *  *
  3  *  *  *

 

Output SW3:

SW3#ping 10.1.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.2.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

sw3#traceroute 10.1.2.2
Type escape sequence to abort.
Tracing the route to 10.1.2.2
VRF info: (vrf in name/id, vrf out name/id)
  1  *  *  *

made you short paint drawing for an overview.

 

any advise?

Everyone's tags (3)
1 ACCEPTED SOLUTION

Accepted Solutions
Contributor

Re: Routing Problem L3 Catalyst 9500 with hsrp

Edge switches don't know about each other so try one of these options.

Option 1

 

Sw3

ip routing

ip route 10.1.2.0 255.255.255.0 10.1.2.1

Sw4

ip routing

ip route 10.1.1.0 255.255.255.0 10.1.1.1

 

option 2

on both switches

no ip routing

ip default-gateway 10.1.1.1 (SW3)

ip default-gateway 10.1.2.1 (SW4)

-Rate helpful posts-
2 REPLIES 2
Contributor

Re: Routing Problem L3 Catalyst 9500 with hsrp

Edge switches don't know about each other so try one of these options.

Option 1

 

Sw3

ip routing

ip route 10.1.2.0 255.255.255.0 10.1.2.1

Sw4

ip routing

ip route 10.1.1.0 255.255.255.0 10.1.1.1

 

option 2

on both switches

no ip routing

ip default-gateway 10.1.1.1 (SW3)

ip default-gateway 10.1.2.1 (SW4)

-Rate helpful posts-
Beginner

Re: Routing Problem L3 Catalyst 9500 with hsrp

Hi,
Problem solved. somehow ip Routing is not displayed in the running config of the 9500 switches and someone of my colleagues enabled ip Routing on the layer 2 cores….
Thank you.
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