Hi, All. Thanks to Todd & All of you helped us. We are really appreciated your help and suggestions. I think that we can do this now. Thanks to all again. Regards, Kenji Anzai On Thu, 18 May 2000 19:33:54 -0400 (EDT) Todd Romero <todd@routeflap.net> wrote:

easily done..redistribute static into bgp with a route map. one /16 static and one /17 static pointing to Null0. the more specific will override the /16 always even tho its still there.

router bgp xxxx redistribute static route-map static-to-bgp ! ip route x.x.x.x 255.255.0.0 Null0 254 ip route x.x.x.x 255.255.128.0 Null0 254 ! access-list 10 permit x.x.x.x 0.0.255.255 access-list 10 permit x.x.x.x 0.127.255.255 ! route-map static-to-bgp permit 10 match ip address 10 !

the only difference at each pop.. your /17 will be different in the static and ACL.

On Thu, 18 May 2000, Kenji Anzai wrote:

...

Hi, All.

Thanks for all your replay to help us out. They were really helpful.

However, let me add some mor info for this question.

1. We have 2 routers at each POP, and own AS number. 2. The routers use EBGP, and use IBGP between the routers at each POP (not between POP). 3. 2 POP are located at different location. 4. We use same data center company's data center, so our network is under the company's network. 5. The data center won't aggrigate our netowrk as /16.

After I read all your response, How could we annouce /16 and /17 from the same router using BGP ?

Regards,

Kenji

On Thu, 18 May 2000 14:04:15 -0400 Kenji Anzai <kenji@itochu.net> wrote:

...

Hi, All.

I'm having problem with our class B address. Last month, we tested our class B address. We announce the address as 2 x /17 from 2 different POP under the same ISP's data center. However, some ISP do NOT accept our route since the address belongs to traditional Class B address, and they told me that they only accept if we announce it as /16. (They filtered out our route…..)

I talked to some people, they suggested me that we need to announce the block as /16 from both POP, even though we only like to announce /17 from each POP (Front /17 from one POP, the other /17 from another POP.).

How could we do so ? Please help us.

|--------- | | POP A | | /17 |------| |----------| | |--------| |-----| ISP C |-- Internet---X----ISP D | ---------| | |--------| Filtered out here… | POP B |------| | /17 | -----------

Regards,

Kenji Anzai

ITIの安齋です。 お世話になっております。

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Kenji Anzai

Network Engineer

Engineering Department Network Operation Group

Itochu Technology, Inc. 3100 Patrick Henry Drive Santa Clara, CA 94504

Tel: (408) 653-2817 (Direct) Fax: (408) 727-4619 Cellular: (408) 910-4170 Email: kenji@itochu.net Pager:1-888-830-3638 kenji_pager@itochu.net (English Only) ***************************************

ITIの安齋です。 お世話になっております。 ***携帯電話の番号が変わりました*** *************************************** Kenji Anzai Network Engineer Engineering Department Network Operation Group Itochu Technology, Inc. 3100 Patrick Henry Drive Santa Clara, CA 94504 Tel: (408) 653-2817 (Direct) Fax: (408) 727-4619 Cellular: (408) 910-4170 Email: kenji@itochu.net Pager:1-888-830-3638 kenji_pager@itochu.net (English Only) ***************************************