| Title: | Digital Brouters Conference |
| Notice: | New common-code brouter family: RouteAbout, DECswitch 900 |
| Moderator: | MARVIN::HART LL |
| Created: | Mon Jul 17 1995 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 929 |
| Total number of notes: | 3736 |
Is it true that when using unumbered serial (with ISDN) and RIP on the router, that RIP updates are never sent over the serial line. If this is true then the ISDN line won't be permanently connected which is what he wants. The ISDN line of the RouteAbout is connected to an Internet Serve Provider by a customer and wants to have the line up only for sending user data. My undestanding is that if somehow he makes the serial interface not advertise routes (equivalent of Cisco's passive interface command) and setups a static route to the Internet Service Provider, then the ISDN line will only be dialed when there is user data. Are there any examples to show such a setup where a RouteAbout needs to be connected to a ISP via a dial up ISDN line ? With OSPF are things different in this area of ISDN and not advertise routes over a serial unnumbered interface. [Posted by WWW Notes gateway]
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 830.1 | MARVIN::CLEVELAND | Thu Apr 03 1997 05:54 | 20 | ||
>Is it true that when using unumbered serial (with ISDN) and RIP on the router,
>that RIP updates are never sent over the serial line. If this is true then the
>ISDN line won't be permanently connected which is what he wants.
I used to think you couldn't use RIP over unnumbered point-to-point
links, but I'm not so sure anymore--perhaps someone who knows the RIP
implemenation can answer this? Regardless, you can disable RIP on a
line by line basis anyway.
You can use static routes, or triggered RIP, to provide routing info
without having the dial line up permanently. For static routes, you
would just disable RIP on the circuit; and set a route (to the default,
probably) pointing over the serial line -- 0.0.0.n if unnumbered, or
the neighbor's serial IP address if numbered.
OSPF doesn't do anything special for dial up lines, so you would
probably see the line up permanently in this case.
Tim
| |||||
| 830.2 | MARVIN::HART | Tony Hart, InterNetworking Prod. Eng. Group | Thu Apr 03 1997 07:43 | 4 | |
RIP can be run on unnumbered sync lines, however it never advertises subnets (only networks) over these lines. Which may not be what you want. Tony | |||||