| 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 |
Hi !
A customer of my would like the following configuration seen below.
He will be running IP-routing only. Now he wants to have the two 2mb
lines connected to SITE-1 to be used normally. If 1 of the 2 2mb lines
goes down, he wants to switch to the 64kb line automatically. The 64kb
line should normally be in standby.
Network configuration.
SITE-1 SITE-2
Routeabout acces EW Routeabout Access EW
| | | |
| -------------2MB-line-------------------- |
| |
| |
2MB-line 64kb-line
| |
| SITE-3 |
| Routeabout access EW |
| | | |
-------------------------- -------------------------
1) Is it possible to have this configuration using RIP ?
2) Is it possible to have the 64kb line as standby ?
3) If RIP not possible then OSPF/IS-IS ?
Best regards
and thank you
for any input
Jens Petersen, MCS-Copenhagen
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 764.1 | MARVIN::CLEVELAND | Wed Feb 19 1997 08:30 | 12 | ||
What do you mean by 'standby'? If it is a 64K leased line that is
always available (ie, not dialup) then you just need to cost it
correctly (ie, a static route with higher cost than the 2M lines).
Then it would only be used if the high speed line became unavailable.
If you mean that it would only be activated (ie dialed) when the
primary is down, then it gets a little trickier. I don't know if WAN
reroute can help here (Brian)? But it is possible to have the router
dial up a connection if the local interface supports V.25bis (ie,
analog modem or ISDN TA).
Tim
| |||||
| 764.2 | 64kb leased line | COPCLU::JENS | Wed Feb 19 1997 09:16 | 10 | |
Thank you for the reply ! The 64 kb line is a leased line. SO the only way is to use static routes ? Jens | |||||
| 764.3 | Yes - WRS uses dialup | MARVIN::CROWLE | Seek not answers; live the questions | Wed Feb 19 1997 11:33 | 9 |
re .2:
>The 64 kb line is a leased line. SO the only way is to use static
>routes ?
Yes, I'm afraid so. WAN Restoral/Reroute requires a dialup connection
for its backup line.
Brian
| |||||
| 764.4 | MARVIN::CLEVELAND | Thu Feb 20 1997 05:30 | 9 | ||
I'd phrase it as 'luckily, you can just use static routes!'. But I'm
old fashioned that way. You want the backup line to get full routing
information exchanged as well?
You can run OSPF and set the cost of the backup circuit higher such
that it would never be used unless the primary was down. Or a similar
setup with IS-IS...I think only RIP is out because it will do pure
hop-count and hence your backup line would get used even when the
primaries were up.
| |||||