From: wilfred d'souza (wilfred_thegr8@yahoo.co.in)
Date: Wed Jul 25 2007 - 04:14:34 ART
Yes that is true but it will not ping until you have a port assigned to it. In this case the vlan is not assigned to any port. the SVI is up coz of the trunk link
Mounir Mohamed <mounir.mohamed@gmail.com> wrote:
The SVI interface will get up/up if the at least one port assigned to the VLAN or when there is trunk interface up/up
On 7/25/07, wilfred d'souza <wilfred_thegr8@yahoo.co.in> wrote: Hello Subodh,
Try assigning the Vlans to any ethernet interface on both the switches and then try pinging...
Let me know if it works
Regards,
Wilfred
subodh.rawat@wipro.com wrote: Hi Champs,
A basic switching problem I am facing. Please see the diagram below:
--- f1/7 f1/7 ---
|sw1|--------------------------------|sw2|
--- dot1Q Trunk ---
Switch 1 is VTp Server with domain CISCO
Switch 2 is VTP Client with domain CISCO
port f1/7 is configured as Dot1q encapsulation on both the switches.
Only one VLAN, i.e. VLAN 3 is added on Sw1 and Same is reflected in Sw2
too when I see "show vtp status"
and "show vlan brief" command. Please note that this VLAn is not
associated with any physical interface of switch.
When I see "sh int fa1/7 trunk" on both the switches, it shows as
trunking with dot1q encapsulation.
IP address of VLAn 3 on SW1 is 3.3.3.1/24 while on sw2 is 3.3.3.2/24.
"sh ip int br" also shows up,up for fa1/7 and vlan 3.
I am not able to ping 3.3.3.1 from sw2 and 3.3.3.2 from sw1. However, I
can ping Ip of own switch, i.e. 3.3.3.2 from sw2 and 3.3.3.1 from sw1.
Can somebody tell me what is wrong with my configuration?
Another good thing is that, when I see "show cdp entry *" from either
switches, it shows information about other switch. e.g. when I see "show
cdp entry *" from sw1, it shows IP address of 3.3.3.2 (of sw2) in its
CDP database. It means layer 2 is working perfect and trunking is also
perfect. Trunking is working fine can be verified from the result that
VLAN 3 is present on sw2 which is VTP client for CISCO VTP domain.
I am not sure why I am not able to ping VLAN 3 IP address of each other
switches.
My configuration is below:
Sw1
interface FastEthernet1/7
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface Vlan3
ip address 3.3.3.1 255.255.255.0
Sw2
interface FastEthernet1/7
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface Vlan3
ip address 3.3.3.2 255.255.255.0
CDP output:
sw1#sh cdp entry *
-------------------------
Device ID: sw2
Entry address(es):
IP address: 3.3.3.2
Platform: Cisco 3640, Capabilities: Router Switch IGMP
Interface: FastEthernet1/7, Port ID (outgoing port): FastEthernet1/7
Holdtime : 128 sec
Version :
Cisco IOS Software, 3600 Software (C3640-IS-M), Version 12.4(8), RELEASE
SOFTWAR
E (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Mon 15-May-06 16:27 by prod_rel_team
advertisement version: 2
VTP Management Domain: 'cisco'
Duplex: full
Regards
Subodh
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