Jerry - this is a great reference for the 3900 Token Ring Switch http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3920/ct3920ug/vlantut .htm
TrBRF's are Token ring Bridge Relay Functions (bridges) and TrCRF's are Token ring Concentrator Ring Functions... basically they're rings and bridges. Since the 3920 is a switch, in order to make them unique, you assign VLANs to the TrCRF's. ring numbers are unique - bridge numbers are not. hth -e- ----- Original Message ----- From: "Jerry Seven" To: Sent: Tuesday, October 30, 2001 8:33 PM Subject: SRB and 3920 questions, please help [7:24734] > Hi, > > I have several Token ring switch questions: > > Router R1 has interface To0 connects to token ring network, and it's the > only device on it besides 3920, on 3920 I configured the bridge number 1 and > vlan 10 for TrBRF, ring number 2 and vlan 20 for TrCRF. > > Questions: > > 1) Why should I configure vlans for TrBRF and TrCRF, what are they for? > > 2) If I enable SRB on R1, what's the bridge number and ring number should I > choose in order to be consistent to 3920 configuration? Should I use > different bridge ID and same ring ID as follows: > > source-bridge ring-group 100 > interface To0 > source-bridge 2 2 100 > > Any help is greatly appreciated, > > J > > > > > _________________________________________________________ > Do You Yahoo!? > Get your free @yahoo.com address at http://mail.yahoo.com _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=24748&t=24734 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
