From: Chad Marsh (chad@xxxxxx)
Date: Tue Jan 11 2000 - 12:45:22 GMT-3
Stan, I agree with your interpretation of the commands 100%, however,
summary-address will summarize into and out of OSPF on an ASBR, i have
set it up and seen it working numerous times. It was a shock to me the
first time I saw it used that way, I guess it's just an undocumented
'feature'.
If the networks specified in the summary-address are external to the
OSPF domain, it will summarize them when redistributing INTO OSPF.
If the networks specified in the summary-address are internal to the
OSPF domain, it will summarize them when redistibuting FROM OSPF into
another routing protocol.
Chad Marsh
CCIE# 5185
Stanislav Sinyagin wrote:
>
> Guys, I suspect you're both wrong.
>
> Read the OSPF commands from CiscoCD:
>
> "area range" is useful only on ABR routers, to tell the other area
> that my area can be summarized this way. You don't have any ABR,
> so get this command away.
>
> "summary-address" is used on ASBR only, and it tells the router to
> inject into OSPF aggregared route, instead of many small ones.
> You don't have any problem in redistributing INTO OSPF, so
> get this off too.
>
> I didn't yet invent the solution, but I'm 100% sure these two commands
> won't ever help (and they don't, as I see in the routing tables 8^)
>
> Good luck,
> Stan
>
> ----- Original Message -----
> From: Darrel E. Hinshaw <dhinshaw@istrength.net>
> To: CCIE List (E-mail) <ccielab@groupstudy.com>
> Sent: Monday, January 10, 2000 18:19
> Subject: RE: VLSM ---> FLSM or OSPF --> IGRP
>
> > Everyone,
> >
> > Sorry for responding to this but I have a beef. Could everyone please read
> > and ReRead an e-mail before you decide to reply to it. As you can see from
> > the gentleman's response below (I do Appreciate the response but just wish
> > that it had been appropriate) he provided valid correct information but if
> > he had read my original e-mail he would have seen the summary-address
> > command that he referred to and could have perhaps shed more useful light o
n
> > the issue.
> >
> >
> > This is not meant to bruise anybody's feeling but rather this should be
> > taken as constructive criticism that will allow this list to become more
> > productive for all of us.
> >
> >
> >
> > ***** RESPONSE ******
> >
> >
> > Summarise all routes to /24 at area boundaries.Since major class is same an
d
> > mask is same all routes shoud go in to IGRP.U can use summary-address also
> > for this purpose.
> >
> >
> > ***** ORIGINAL *****
> >
> >
> > All:
> >
> >
> > First I'm sorry for making this so long.
> >
> >
> >
> > Great deal of difficulty here. The usual parameter of NO static routes of
> > any kind are in effect.
> >
> >
> > R1-->S0------(OSPF 0)------S0<--R2-->E0------(IGRP)------E0<--R3-->E1
> >
> > Interface Addresses:
> > R1/S0: 150.100.4.5/24 OSPF Area 0
> > R1/L0: 150.100.5.5/30 OSPF Area 0
> > R2/S0: 150.100.4.3/24 OSPF Area 0
> > R2/L0: 150.100.5.9/30 OSPF Area 0
> > R2/E0: 150.100.128.1/24 IGRP
> > R3/E0: 150.100.128.2/24 IGRP
> > R3/E1: 150.100.129.1/24 IGRP
> >
> > Problem: How do I distribute OSPF into IGRP on R2? I have configured but I
> > am unable to get any 150.100.5.x addresses to show up in R3's routing table
.
> > Below are the relevant Configs.
> >
> > Router 1:
> >
> > router ospf 5
> > network 150.100.4.0 0.0.0.255 area 0
> > network 150.100.5.5 0.0.0.0 area 0
> > network 150.100.14.0 0.0.0.255 area 3
> > area 0 authentication message-digest
> > area 3 range 150.100.14.0 255.255.255.0
> > area 3 virtual-link 150.100.3.1
> >
> > Router 2:
> >
> > router ospf 5
> > summary-address 150.100.5.0 255.255.255.0
> > redistribute igrp 5 subnets route-map igrpn2ospf
> > network 150.100.4.0 0.0.0.255 area 0
> > network 150.100.5.9 0.0.0.0 area 0
> > area 0 authentication message-digest
> > area 0 range 150.100.4.0 255.255.255.0
> > area 0 range 150.100.5.0 255.255.255.0
> >
> > router igrp 5
> > redistribute ospf 5 metric 10000 10 255 1 1500 route-map ospfn2igrp
> > passive-interface Loopback0
> > passive-interface Serial0
> > passive-interface Serial0.110
> > network 150.100.0.0
> > network 0.0.0.0
> >
> > ip classless
> >
> > access-list 1 permit 150.100.128.0 0.0.127.255
> > access-list 2 deny 150.100.128.0 0.0.127.255
> > access-list 2 permit any
> > !
> > route-map igrpn2ospf permit 10
> > match ip address 1
> > !
> > route-map ospfn2igrp permit 10
> > match ip address 2
> >
> > Router 3:
> >
> > router igrp 5
> > network 150.100.0.0
> >
> > ip classless
> >
> >
> >
> > ANY help would be appreciated.
> >
> >
> > Regards,
> >
> > Darrel Hinshaw
> >
> >
> >
> > PS If you have actually read this far . . . THANKS.
> >
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:22:44 GMT-3