From: Mounir Mohamed (mounir.mohamed@gmail.com)
Date: Wed Jul 25 2007 - 03:53:33 ART
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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-- Best Reagrds, Mounir Mohamed
This archive was generated by hypermail 2.1.4 : Sat Aug 18 2007 - 08:17:41 ART