Fred, Thanks for your reply.
So in my case I just need to use ring 2 as source ring, choose any number for bridge number and terminator ring, that's it, right. I have another two questions: 1) in the following scenario, on 3920 two TrCRFs are created, in ring number 1 and 2 respectively, they belong to one TrBRF with bridge number 0xF: R1 ---- Ring 1 ---- 3920 ---- Ring 2 ---- R2 Let's say on R1, is the following config ok? source-bridge ring-group 100 interface To0 source-bridge 1 1 100 source-bridge spanning multiring all I can not use 0xF for the internal bridge number of R1, right? 2) When should I use SRB for TrCRF on 3920, and when to use SRT? If I use the above config for R1, and configure SRT on 3920 for ring 1, will it work? J ----- Original Message ----- From: "Fred Ingham" To: "Jerry Seven" Cc: Sent: Monday, October 29, 2001 11:50 PM Subject: Re: SRB and 3920 questions, please help [7:24734] > Jerry: The way the Token Ring VLANs are set up there is a parent VLAN > and a child VLAN. The TrBRF is the parent, the TrCRF is the child. The > TrBRF is the virtual bridge, TrCRF's belong to a given TrBRF. 3920 > ports are assigned to a TrCRF. The VLAN IDs are used internally on the > 3920 and are independent from the bridge or ring numbers. There is a > good tuitorial on the CD or CCO under the 3920 section. > > When you have two To interfaces, you can have them on the same ring or > on different rings. For the same ring: Configure the TrBRF first, this > is the parent vlan. Assign a bridge number (default is F) and a vlan > id. Next configure a TrCRF, this is the child vlan. Assign a vlan ID, > tie it to the TrBRF, and configure the ring number (in hex), and the > bridging mode (SRT or SRB). Next assign ports to the TrCRF. If you > assign multiple ports to the TrCRF they are on the same ring. > > With the single TrBRF defined you can tie multiple TrCRF's to it with > different ring numbers. These will be bridged. There is no router > interface configuration necessary > other than ring speed to bridge between the two rings. You can give the > To interfaces and the TrBRF IP addresses in the same net and ping > between them. > > For your configuration you are not bridging on the 3920, you are > bridging on the router. This is done if you are configuring DLSW, for > instance. When you have configured the TrCRf for ring 2 this is the > source ring used on the To interface. You can use any bridge number to > the router virtual ring 100. For DLSW use the source-bridge spanning > command and, of course, configure ring speed. > > Hope this isn't too confusing, Fred. > > Jerry Seven wrote: > > > > 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=24830&t=24734 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
