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Routing Problem L3 Catalyst 9500 with hsrp

senjuone1
Level 1
Level 1

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?

1 Accepted Solution

Accepted Solutions

ammahend
VIP
VIP

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)

-hope this helps-

View solution in original post

2 Replies 2

ammahend
VIP
VIP

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)

-hope this helps-

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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