First, trunk mode is desirable, non-neigotate, auto, none, something like
that.
Second, isl is an encapsulation method, it is not a trunk mode.
I am pretty sure you have layer 2 problem, cdp command is layer 2
troubleshooting tool.
HTH
Vincent Chong
""Arun"" Hi
> I have checked the trunking mode on the port it shows it as encaps isl
> and i found this with show int fast0/16 switchport command
> Regards
> ""Vincent Chong"" wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > What do you find in show vtp comand set ?
> >
> > Check your trunking mode in the catalyst.
> >
> > HTH
> > Vincent Chong
> >
> > ""Arun"" Hi
> > > I am facing problem in setting the isl trunk between 29900xL series
> switch
> > > and 7100 series router .The configuration is like i am using fast
> ethernet
> > > port 0/16 of switch for trunk .
> > > i configure it using commands as below for the switch i do..
> > >
> > > conf t
> > > int vlan 1
> > > ip adress 192.168.3.215 255.255.255.0
> > > ip default-gateway 192.168.3.210
> > >
> > > conf ter
> > > int fast eth0/16
> > > switchport mode trunk
> > > switchport trunk encapsulation isl(right )
> > > swicthport trunk allowed vlan all
> > > conf ter
> > > int fast0/15
> > > switchport access vlan 2
> > > spannig portfast
> > > exit
> > > also i did like
> > > vlan database
> > > vtp server
> > > vlan 2
> > >
> > > now for the router
> > > conf t
> > > int fast0/0
> > > no shutdown
> > > exit
> > > int fast0/0.1
> > > encap isl 1
> > > ip add 192.168 .3.210 255.255.255.0
> > > exit
> > > int fast0/0.2
> > > encap isl 2
> > > ip add 192.168 .4.210 255.255.255.0
> > > exit
> > >
> > >
> > > now the problem is i am not able to ping from router to interface
> > > 192.168.3.210 ..am i doing something wrong ......also after this if i
do
> > > show cdp neigh the router see the switch but if i do it on switch it
> > doesn't
> > > see the router ..please help .....
> > > where i am doing wrong ..............Pleaseeeeeeeeeeeee help
> > > Thanx in advance
> > >
> > >
> > > Regards
> > > Arun Sharma
> > > FAQ, list archives, and subscription info:
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> > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
> > FAQ, list archives, and subscription info:
> http://www.groupstudy.com/list/cisco.html
> > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
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