From: Theo M (theorack@gmail.com)
Date: Sat Aug 18 2007 - 16:43:17 ART
Hello guys,
Let me restate my scenario like this:
- OSPF router with 2 loopbacks
- redist connected subnets w/ a route-map, lo0 as E1 and lo1 as E2
- when I summarize them, I get an E2 on the OSPF neighbor
It seems that if an E2 is present, the summary is also an E2,
even if some of the summarized routes are E1s.
The questions:
1. why ?
2. can I change the summary to E1 without touching anything else ? I think
we can't.
This isn't some kind of trick question with convoluted solutions, just a
simple technology one.
--On 8/18/07, NITIN NITIN <ccie_study_123@yahoo.com> wrote: > > Hey , > > I also tried changing metric type with distribute list route-map in > > but unsucessful > > so is the conclusion that --- changing metric type with distribute list > route-map in > is invalid option ????? > > Herbert Maosa <asawilunda@googlemail.com> wrote: > Ofcourse distribute list for OSPF only affects what goes in the routing > table, it has no effect on what you send or recieve to/from neighbors. > > I was only asking you test it since you were in the lab already because I > have not tested it, I only am sure that in OSPF you can attache a > route-map > to the distribute-list command and that from that route-map you can change > different route attributes. I hadn't yet played with trying to change the > metric-type, but it is an option in the route-map. > > But since you have tried and verified that it is not happening, then I > guess > that option is out ! I will also play with it when I get my hands on some > tin. > > Herbert. > > > On 8/18/07, Bit Gossip wrote: > > > > Herbert, > > I tried the distribute list with route-map on both ASBR and downstream > > router but no luck. > > Are you sure you can use a distribute-list route-map to set route > > parameters? AFAIK distribute-list in OSPF can only prevent some routes > to > > show in the routing table but have no effect on the OSPF db. Furthermore > > there is no mention in the DocCD of using the set part in this > route-map. > > Of > > course I would love if that was possible? > > > > Any help here? > > > > Bit. > > > > ----- Original Message ----- > > From: "Herbert Maosa" > > To: "Bit Gossip" < bit.gossip@chello.nl> > > Cc: "Toh Soon, Lim" ; "Theo M" ; > > "Cisco certification" > > Sent: Saturday, August 18, 2007 4:59 PM > > Subject: Re: Summary on ASBR / Make a Type-1 ?!? > > > > > > > Since you are labbing this, you may also try changing the metric-type. > I > > > > > have not tested this, but I know you can use the distribute-list > > > route-mapcommand in the ospf router configuration mode to filter > > > external routes that > > > are installed in the routing table from the OSPF database. In this > > > route-map > > > you have the option to set metric-type type-1 to change from E2 to E1. > I > > > would be interested to see the result of this if you can test it. You > > may > > > have to test this on the router generating the summary as well as > > another > > > router receiving the summary. > > > > > > Herbert. > > > > > > On 8/18/07, Bit Gossip wrote: > > >> > > >> Quickly labbing it, shows that: > > >> - if ALL contributing are type-1 the summary is type-1 > > >> - if ALL contributing are type-2 the summary is type-2 > > >> - in a mix of type-1 and 2 the summary in type-1 > > >> Would be interesting to understand better the last case. > > >> > > >> The funny thing is that on the ASBR the summary address is not shown > as > > >> external in the 'show ip route' even if it is clearly external in the > > >> 'show > > >> ip ospf database' > > >> > > >> R5#show ip route ospf > > >> 1.0.0.0/8 is variably subnetted, 3 subnets, 2 masks > > >> O 1.1.1.0/24 is a summary, 00:01:56, Null0 > > >> > > >> R5#show ip ospf database > > >> > > >> OSPF Router with ID (150.1.5.5) (Process ID 1) > > >> <...> > > >> Type-5 AS External Link States > > >> > > >> Link ID ADV Router Age Seq# Checksum Tag > > >> 1.1.1.0 150.1.5.5 200 0x80000001 0x00ABD0 0 > > >> > > >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > >> > > >> R5#show ip ospf summary-address > > >> > > >> OSPF Process 1, Summary-address > > >> > > >> 1.1.1.0/255.255.255.0 Metric 20, Type 1, Tag 0 > > >> R5#show run | s ospf > > >> router ospf 1 > > >> log-adjacency-changes > > >> summary-address 1.1.1.0 255.255.255.0 > > >> redistribute connected metric-type 1 subnets > > >> network 149.1.45.5 0.0.0.0 area 0 > > >> network 150.1.5.5 0.0.0.0 area 0 > > >> > > >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > >> > > >> R5#show run | s ospf > > >> router ospf 1 > > >> log-adjacency-changes > > >> summary-address 1.1.1.0 255.255.255.0 > > >> redistribute connected metric-type 1 subnets > > >> redistribute rip subnets > > >> network 149.1.45.5 0.0.0.0 area 0 > > >> network 150.1.5.5 0.0.0.0 area 0 > > >> access-list 100 deny ospf any any > > >> R5#show ospf dat > > >> R5#show ip ospf sum > > >> R5#show ip ospf summary-address > > >> > > >> OSPF Process 1, Summary-address > > >> > > >> 1.1.1.0/255.255.255.0 Metric 20, Type 1, Tag 0 > > >> > > >> > > >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > >> > > >> R5(config-router)#do show run | s ospf > > >> router ospf 1 > > >> log-adjacency-changes > > >> summary-address 1.1.1.0 255.255.255.0 > > >> redistribute connected subnets > > >> redistribute rip subnets > > >> network 149.1.45.5 0.0.0.0 area 0 > > >> network 150.1.5.5 0.0.0.0 area 0 > > >> access-list 100 deny ospf any any > > >> R5(config-router)#do show ip ospf summary > > >> > > >> OSPF Process 1, Summary-address > > >> > > >> 1.1.1.0/255.255.255.0 Metric 20, Type 2, Tag 0 > > >> > > >> > > >> ----- Original Message ----- > > >> From: "Toh Soon, Lim" > > >> To: "Theo M" > > >> Cc: "Herbert Maosa" < asawilunda@googlemail.com>; "Cisco > certification" > > >> > > >> Sent: Saturday, August 18, 2007 12:17 AM > > >> Subject: Re: Summary on ASBR / Make a Type-1 ?!? > > >> > > >> > > >> > Hi Theo, > > >> > > > >> > Do you mean if all the component routes are E1s then the summary > > >> > address > > >> > is > > >> > advertised as E1, and vice versa for E2? I have not labbed and > tested > > >> > it > > >> > yet. > > >> > > > >> > This is the same question that baffles me when I was studying for > > >> Written > > >> > Exam. Browsing thru the OSPF commands in Command References, I > don't > > >> > see > > >> > any > > >> > command to set the metric type of the summary route. > > >> > > > >> > Herbert was saying to tag the summary, then use the tag in a > > route-map > > >> to > > >> > set the metric-type. But on which router to define the route-map > and > > >> what > > >> > mechanism to call it? My understanding is we call the route-map in > a > > >> > redistribute statement when redistributing OSPF into other > protocols. > > >> > > > >> > Please help. > > >> > > > >> > > > >> > Thank you. > > >> > > > >> > Confused Too, > > >> > Lim TS > > >> > > > >> > > > >> > On 8/18/07, Theo M < theorack@gmail.com> wrote: > > >> >> > > >> >> Hello guys, > > >> >> > > >> >> I know I can change the metric-type when redistributing. > > >> >> In my scenario, I redistribute 2 connected interfaces w/ a RMAP, > > >> >> one as E1 and one as E2, then I summarize on the same router. > > >> >> In fact my goal here is to understand the original meaning of the > > >> >> item in Anthony's Extended Blueprint. > > >> >> > > >> >> -- > > >> >> Theo > > >> >> > > >> >> On 8/17/07, Herbert Maosa wrote: > > >> >> > > > >> >> > I doesnt look like the summary address has an option of setting > > the > > >> >> > metric-type. Are you looking to do this on the same router you > are > > >> >> > generating the summary or on a different router ? > > >> >> > > > >> >> > Without understanding the scenario the only thing I am thinking > of > > >> >> > at > > >> >> the > > >> >> > moment is to tag the summary, then use the tag in a route-map to > > set > > >> >> > the > > >> >> > metric-type. > > >> >> > > > >> >> > > > >> >> > Herbert. > > >> >> > > > >> >> > On 8/17/07, Herbert Maosa < asawilunda@googlemail.com> wrote: > > >> >> > > > > >> >> > > Type 5 LSAs ( External routes ) are either type-1 or type-2 ( > > E1 > > >> or > > >> >> E2 > > >> >> > > ). > > >> >> > > > > >> >> > > > > >> >> > > Herbert. > > >> >> > > > > >> >> > > > > >> >> > > On 8/17/07, Theo M < theorack@gmail.com> wrote: > > >> >> > > > > > >> >> > > > Hello, > > >> >> > > > > > >> >> > > > I found this on Anthony Sequeira's Extended Blueprint: > > >> >> > > > > > >> >> > > > >>> > > >> >> > > > II. Summary Address on ASBR > > >> >> > > > I. Make a Type-1 > > >> >> > > > <<< > > >> >> > > > > > >> >> > > > It's a typo, should be a Type-5, right ? > > >> >> > > > > > >> >> > > > -- > > >> >> > > > > > >> >> > > > > > >> >> > > _______________________________________________________________________ > > >> >> > > > > > >> >> > > > Subscription information may be found at: > > >> >> > > > http://www.groupstudy.com/list/CCIELab.html > > >> >> > > > > > >> >> > > > > >> >> > > > > >> >> > > > > >> >> > > -- > > >> >> > > Kindest regards, > > >> >> > > hm > > >> >> > > > >> >> > > > >> >> > > > >> >> > > > >> >> > -- > > >> >> > Kindest regards, > > >> >> > hm > > >> >> > > >> >> > > _______________________________________________________________________ > > >> >> Subscription information may be found at: > > >> >> http://www.groupstudy.com/list/CCIELab.html > > >> > > > >> > > > _______________________________________________________________________ > > >> > Subscription information may be found at: > > >> > http://www.groupstudy.com/list/CCIELab.html > > >> > > > >> > > >> > > > > > > > > > -- > > > Kindest regards, > > > hm > > > > > > > _______________________________________________________________________ > > > Subscription information may be found at: > > > http://www.groupstudy.com/list/CCIELab.html > > > > > > > > > > -- > Kindest regards, > hm > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html > > > > --------------------------------- > Looking for a deal? Find great prices on flights and hotels with Yahoo! > FareChase. > > --------------------------------- > Sick sense of humor? Visit Yahoo! TV's Comedy with an Edge to see what's > on, when. > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html
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