From: subodh.rawat@wipro.com
Date: Wed Jul 25 2007 - 05:53:55 ART
sw1#sh int fa1/7 switchport
Name: Fa1/7
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: 1,3
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
sw2#sh int fa1/7 switchport
Name: Fa1/7
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: 1,3
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
-----Original Message-----
From: Djerk Geurts [mailto:djerk@djerk.nl]
Sent: Wednesday, July 25, 2007 2:18 PM
To: 'Toh Soon, Lim'; Subodh Singh Rawat (WT01 - TELECOM SERVICE
PROVIDER)
Cc: ccielab@groupstudy.com
Subject: RE: Basic switching trunking question..please answer
Add the following to the list from both switches:
- sh int f0/7 switch
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of Toh Soon, Lim
> Sent: woensdag 25 juli 2007 7:34
> To: subodh.rawat@wipro.com
> Cc: ccielab@groupstudy.com
> Subject: Re: Basic switching trunking question..please answer
>
> Hi Subodh,
>
> Your configs look fine to me. This simple setup should work without
> issue.
>
> Anyway, can you provide us outputs of the following commands:
>
> - sh ip arp vl 3
> - sh spann vl 3
> - sh int status
> - sh int trunk
>
>
> Thank you.
>
> B.Rgds,
> Lim TS
>
>
> On 7/25/07, subodh.rawat@wipro.com <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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This archive was generated by hypermail 2.1.4 : Sat Aug 18 2007 - 08:17:41 ART