The 3550 definitely does support ISL trunking. ""Ellis, Andrew"" wrote in message news:200210241123.LAA30175@;groupstudy.com... > Raj, > > The following link will tell you enough so you can make it work, if you have > the right router. > > http://www.cisco.com/warp/public/473/50.shtml > > -Drew > > -----Original Message----- > From: Rajesh Kumar [mailto:pikumar@;cisco.com] > Sent: Wednesday, October 23, 2002 7:28 PM > To: [EMAIL PROTECTED] > Subject: Subinterface config. in CAT3550. [7:56174] > > > Hi all, > > I am trying to configure a router on a stick configuration - with 26xx > series router's e0/0 port connected to fa0/1 port of CAT3550. > > Router's E0 port is configured like this > > int e0/1 > no shu > no ip address > > int e0/1.1 > encap isl 20 > ip address 192.168.20.1 255.255.255.0 > > int e0/1.2 > encap isl 40 > ip address 192.168.40.1 255.255.255.0 > > When I try to do the same thing on CAT 3550's fa0/1 port, I get an error > message like this : > > " Configuring IP routing on LAN subinterface is only allowed if that > subinterface is configured as a part of IEEE 802.10 or dot1q or ISL > VLAN. " > > But nowhere I find the command "encap isl " to insert this in > the subinterfaces. > > > Does anyone has anythoughts on this and how to overcome this? > > Thanks, > Rajesh
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