cisco 3560 layer 3 switch question

cisco 3560 layer 3 switch question

Post by cantonese » Tue, 30 Oct 2007 23:14:17


Hi,

I'm new in cisco networking.
I have 3 cisco 3560 layer 3 switch. I defined the vlan
as follow: (vlan1 is the manangment vlan)
I can ping from server1 (on switch1) to server2/server3 (on switch2).

I can ping back from server2 (on switch2) to server1 (on switch1).
I can ping back from server3 (on switch2) to server1 (on switch1).

I can ping from server4 (on switch3) to server2/server3 (on switch2).
I can ping from server4 (on switch3) to server1 (on switch1).

I can ping from server5 (on switch3) to server3 (on switch2).
But I found I can't ping from server5 (on switch3) to server2 (on switch2).
OR I found I can't ping from server5 (on switch3) to server1 (on switch1).

My question is, Is that possible to make a connection between server5
(which is on vlan4 of switch 3) to the server1 or server2 (which is on
vlan2).
( Certainly , I can ping from server5 to server4.)
======================================================================
[switch1] vlan1:180.40.1.254 vlan2:180.42.1.254 {port 1-23}

[switch2] vlan1:180.40.1.253 vlan2:180.42.1.253 {port 1-12}
vlan3:180.42.33.254{port 13-22}
vlan4:180.42.31.253{no port assigned)

[switch3] vlan1:180.40.1.252 vlan2:180.42.1.252 {port 1-12}
vlan3:180.42.33.253{no port assigned}
vlan4:180.42.31.254{port 13-23}

(vlan 2)
---------
|server1|
---------
|
|
-------------------------------------
| 1| 3| 5| 7| 9|11|13|15|17|19|21|23|
------------------------------------- [switch1]
| 2| 4| 6| 8|10|12|14|16|18|20|22|24|
-------------------------------------
|
|
|
(vlan 2) (vlan 3) |
--------- --------- |
|server2| |server3| |
--------- --------- |
| | |
| | |
-------------------------------------
| 1| 3| 5| 7| 9|11|13|15|17|19|21|23|
------------------------------------- [switch2]
| 2| 4| 6| 8|10|12|14|16|18|20|22|24|
-------------------------------------
|
|
|
(vlan 2) (vlan 4) |
--------- --------- |
|server4| |server5| |
--------- --------- |
| | |
| | |
-------------------------------------
| 1| 3| 5| 7| 9|11|13|15|17|19|21|23|
------------------------------------- [switch3]
| 2| 4| 6| 8|10|12|14|16|18|20|22|24|
-------------------------------------

(P.S. All server have the default gateway to the corresponding vlan segment)

Thank you very much for any help,

Wayne Wan
 
 
 

cisco 3560 layer 3 switch question

Post by Trendkil » Wed, 31 Oct 2007 00:01:43

n Oct 29, 10:14 am, cantonese boy < XXXX@XXXXX.COM > wrote:

You are talking about a layer 3 issue it sounds like. Where is the
router interface for VLAN 4? Can server 5 ping its gateway? How
about ping server 4 on the same switch? If not, you need to check
trunking of vlan 4 back to the router that owns all these networks.