I also would like an explanation of what you mean about tabs Ryan. Looks like control mechanisms for terminal servers with OSS provisioning automation.
>From the CLT here http://tools.cisco.com/Support/CLILookup/cltSearchAction.do ------------------------------------- rotary To define a group of lines consisting of one or more virtual terminal lines or one auxiliary port line, use the rotary command in line configuration mode. To remove a group of lines from a rotary group, use the no form of this command. rotary group [queued [by-role]] [round-robin] no rotary group [queued [by-role]] [round-robin] Usage Guidelines Connections to a rotary group can take advantage of the following features: •Clear To Send (CTS)—If a line in a rotary group is configured to require CTS, the Cisco IOS software ignores that line when CTS from the attached device is low. This feature enables the software to avoid inactive host ports automatically. To enable this feature, use the modem bad line configuration command. •EIA/TIA-232 handshaking—Rotary groups are often associated with large terminal switches that require an EIA/TIA-232 handshake before forming a connection. In this case, use the modem callout line configuration command to configure the lines in the group. If the EIA/TIA-232 handshake fails on a line, the Cisco IOS software steps to the next free line in the rotary group and restarts the negotiation. •Access control—You can use access lists for groups of virtual terminal lines. •Session timeout—Use the session-timeout line configuration command to set an interval for a line so that if no activity occurs on a remotely initiated connection for that interval, the Cisco IOS software closes the connection. The software assumes that the host has crashed or is otherwise inaccessible. Typically, rotary groups are used on devices with multiple modem connections to allow connection to the next free line in a hunt group. In the event that there are no free asynchronous ports, the queued keyword enables outgoing connection requests to be queued until a port becomes available. Periodic messages are sent to users to update them on the status of their connection request. For a nonqueued connection request, the remote host must specify a particular TCP port on the router to connect to a rotary group with connections to an individual line. The available services are the same, but the TCP port numbers are different. Table 19 lists the services and port numbers for both rotary groups and individual lines. ************************** There is a pretty chart that won't copy here but states essentially what Bob said earlier, ports 3000+N for Telnet, 5000+N for Raw TCP protocol (no Telnet protocol) , 7000+N Telnet protocol, binary mode,and 10000+N for XRemote protocol. ************************** For example, if Telnet protocols are required, the remote host connects to the TCP port numbered 3000 (decimal) plus the rotary group number. If the rotary group identifier is 13, the corresponding TCP port is 3013. If a raw TCP stream is required, the port is 5000 (decimal) plus the rotary group number. If rotary group 5 includes a raw TCP (printer) line, the user connects to port 5005 and is connected to one of the raw printers in the group. If Telnet binary mode is required, the port is 7000 (decimal) plus the rotary group number. The by-role keyword enables priority users to bypass the queue and access the first available line. Note Priority users must have the privilege level of administrator(PRIV_ROOT) to take advantage of this option. The round-robin selection algorithm enabled by the round-robin keyword improves the utilization of tty ports. When looking for the next available port, the default linear hunting algorithm will not roll over to the next port if the first port it finds is bad. This failure to roll over to the next port results in an inequitable utilization of the tty ports on a router. The round-robin hunting algorithm will roll over bad ports instead of retrying them. Note The round-robin option must be configured for all the lines in a rotary group. Examples The following example establishes a rotary group consisting of virtual terminal lines 2 through 4 and defines a password on those lines. By using Telnet to connect to TCP port 3001, the user gets the next free line in the rotary group. The user need not remember the range of line numbers associated with the password. line vty 2 4 rotary 1 password letmein login The following example enables asynchronous rotary line queueing: line 1 2 rotary 1 queued The following example enables asynchronous rotary line queueing using the round-robin algorithm: line 1 2 rotary 1 queued round-robin --------------------------- Matt On Sun, Mar 24, 2013 at 4:17 PM, Tony Singh <[email protected]> wrote: > > This is the best I could find.. > > https://learningnetwork.cisco.com/thread/32263 > > -- > BR > > Tony > > Sent from my iPad > > On 24 Mar 2013, at 19:39, Bob McCouch <[email protected]> wrote: > >> Could you explain how you use them to enable easier tab use? >> >> On Sunday, March 24, 2013, Ryan Krcelic wrote: >> >>> I use rotary lines on my access server...much easier if you like using >>> tabs :) >>> >>> Respectfully, >>> >>> Ryan Krcelic >>> CCIE #38087 >>> >>> Sent from my iPhone >>> >>> On Mar 24, 2013, at 8:10 PM, Bob McCouch <[email protected] <javascript:;>> >>> wrote: >>> >>>> No, seemingly little-known fact is that the roatary group N actually >>>> answers on 300N, 500N, 700N, and I think 1000N (not positive on that last >>>> one). >>>> >>>> I have no idea why that is the case, and in fact no clue what rotary >>> groups >>>> on VTYs would really be used for other than silly CCIE parlor tricks like >>>> making Telnet answer on a weird port for lock-and-key. >>>> >>>> I'm pretty sure it's a legacy feature related to dial stuff but I've >>> never >>>> ever seen rotary groups in the wild. >>>> >>>> >>>> >>>> On Sunday, March 24, 2013, Joe S wrote: >>>> >>>>> Going off memory, but I'm about 99% sure it should make it 3001. If >>> you're >>>>> hitting it at all those port numbers... >>>>> >>>>> My first thought is you're doing your telnet wrong. Which obviously >>> sounds >>>>> silly. >>>>> >>>>> MY second, now that I'm actually looking better, is that you've only >>> bumped >>>>> vty line 4 to that port. Not sure exactly what effect that would have. I >>>>> would imagine the rest of the vty lines would still be at 23. Not sure >>> why >>>>> 5001 and 7001 are all doing something. >>>>> >>>>> >>>>> On Sun, Mar 24, 2013 at 11:00 AM, >>>>> <[email protected]<javascript:;> >>> <javascript:;> >>>>>> wrote: >>>>> >>>>>> Send CCIE_RS mailing list submissions to >>>>>> [email protected] <javascript:;> <javascript:;> >>>>>> >>>>>> To subscribe or unsubscribe via the World Wide Web, visit >>>>>> http://onlinestudylist.com/mailman/listinfo/ccie_rs >>>>>> or, via email, send a message with subject or body 'help' to >>>>>> [email protected] <javascript:;><javascript:;> >>>>>> >>>>>> You can reach the person managing the list at >>>>>> [email protected] <javascript:;> <javascript:;> >>>>>> >>>>>> When replying, please edit your Subject line so it is more specific >>>>>> than "Re: Contents of CCIE_RS digest..." >>>>>> >>>>>> >>>>>> Today's Topics: >>>>>> >>>>>> 1. rotary (Imran Ali) >>>>>> >>>>>> >>>>>> ---------------------------------------------------------------------- >>>>>> >>>>>> Message: 1 >>>>>> Date: Sat, 23 Mar 2013 22:00:10 +0300 >>>>>> From: Imran Ali <[email protected] <javascript:;> <javascript:;>> >>>>>> To: Cisco certification <[email protected] >>>>>> <javascript:;><javascript:;>>, >>>>>> [email protected] <javascript:;> <javascript:;> >>>>>> Subject: [OSL | CCIE_RS] rotary >>>>>> Message-ID: >>>>>> < >>>>>> cah7egzeeymzoattr+i_3nkuo7ma3xyn3qx60cjoz8jcde31...@mail.gmail.com<javascript:;> >>> <javascript:;> >>>>>> >>>>>> Content-Type: text/plain; charset=ISO-8859-1 >>>>>> >>>>>> Hi all, >>>>>> >>>>>> i have the following config >>>>>> >>>>>> R2(config)#lin vty 4 >>>>>> R2(config-line)#ro >>>>>> R2(config-line)#rotary 1 >>>>>> R2(config-line)#password cisco >>>>>> R2(config-line)#login >>>>>> R2(config-line)#exit >>>>>> >>>>>> when i telnet into it at port 7001 it is a successfull connection >>>>>> >>>>>> same result for port 3001 , 5001 >>>>>> >>>>>> i am not sure what does rotary command does here ....? >>>>>> >>>>>> >>>>>> End of CCIE_RS Digest, Vol 86, Issue 23 >>>>>> *************************************** >>>>> _______________________________________________ >>>>> For more information regarding industry leading CCIE Lab training, >>> please >>>>> visit www.ipexpert.com >>>>> >>>>> Are you a CCNP or CCIE and looking for a job? Check out >>>>> www.PlatinumPlacement.com >>>>> >>>>> http://onlinestudylist.com/mailman/listinfo/ccie_rs >>>> _______________________________________________ >>>> For more information regarding industry leading CCIE Lab training, >>> please visit www.ipexpert.com >>>> >>>> Are you a CCNP or CCIE and looking for a job? Check out >>> www.PlatinumPlacement.com >>>> >>>> http://onlinestudylist.com/mailman/listinfo/ccie_rs >>> >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> >> Are you a CCNP or CCIE and looking for a job? Check out >> www.PlatinumPlacement.com >> >> http://onlinestudylist.com/mailman/listinfo/ccie_rs > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
