Adam, That is right. In fact, if you have a router connected to multiple areas via level 1, ATT bit is set as well by the router that is connected to multiple areas.
On Mon, Dec 21, 2009 at 8:20 AM, Vitkovsky, Adam <[email protected]>wrote: > Yes please I meant l2 routers in this case :) > Though with the multi area feature the l1/2 router can connect to l1 > routers in different areas > I believe the att bit is set automatically in l1 lsp only when the L1/2 > router interconnects different areas (via connections to l1 or l2 routers) > > > Adam Vitkovsky > > -----Original Message----- > From: Rick Mur [mailto:[email protected]] > Sent: Monday, December 21, 2009 3:34 PM > To: Vitkovsky, Adam > Cc: [email protected] > Subject: Re: [OSL | CCIE_SP] CCIE_SP Digest, Vol 33, Issue 23 > > But an L1L2 router cannot connect to an L1 router in another area, since it > shares the same L1 domain :-) > You might be right though when the L2 part of the L1L2 router is connected > to an L2 router in another area, but I can't recall that from things I > tested. > > -- > Regards, > > Rick Mur > CCIE2 #21946 (R&S / Service Provider) > Sr. Support Engineer - IPexpert, Inc. > URL: http://www.IPexpert.com > > On 21 dec 2009, at 13:09, Vitkovsky, Adam wrote: > > > I believe l1/l2 router will advertise a default route only when it > connects two different areas as defined by the net id (ie 49.xxxx.)by > default > > -are the r1 and r5 routers connected to different area than the r2 is a > part of? > > You should be able to overcome this behavior by using the att bit control > feature > > -where you can set the att bit based on the match in the route-map > > In that route-map you'll match for the net id (clns address) of the > upstream router/s > > > > > > Adam Vitkovsky > > > > -----Original Message----- > > From: [email protected] [mailto: > [email protected]] On Behalf Of > [email protected] > > Sent: Sunday, December 20, 2009 4:46 PM > > To: [email protected] > > Subject: CCIE_SP Digest, Vol 33, Issue 23 > > > > Send CCIE_SP mailing list submissions to > > [email protected] > > > > To subscribe or unsubscribe via the World Wide Web, visit > > http://onlinestudylist.com/mailman/listinfo/ccie_sp > > or, via email, send a message with subject or body 'help' to > > [email protected] > > > > You can reach the person managing the list at > > [email protected] > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of CCIE_SP digest..." > > > > > > Today's Topics: > > > > 1. Re: Volume 2 section 1 Multiprotocol Challange lab ISIS task > > 2.2 (Thomas J. Loran) > > > > > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Sun, 20 Dec 2009 15:45:48 +0000 > > From: "Thomas J. Loran" <[email protected]> > > Subject: Re: [OSL | CCIE_SP] Volume 2 section 1 Multiprotocol > > Challange lab ISIS task 2.2 > > To: Rick Mur <[email protected]> > > Cc: Marko, "[email protected]" <[email protected]> > > Message-ID: <[email protected]> > > Content-Type: text/plain; charset="us-ascii" > > > > Yes with the is-type level-1 command > > > > See the whole isis database and notice no L2 database. I did a R1, R2, > R5 reload and it did not fix the issue > > > > R2#sh isis database detail > > > > IS-IS Level-1 Link State Database: > > LSPID LSP Seq Num LSP Checksum LSP Holdtime > ATT/P/OL > > R1.00-00 0x00000015 0x737B 918 0/0/0 > > Auth: Length: 9 > > Area Address: 49.1155 > > NLPID: 0x81 0xCC > > Hostname: R1 > > IP Address: 125.125.125.1 > > Metric: 2 IP 172.16.21.0/24 > > Metric: 2 IP 125.125.125.1/32 > > Metric: 2 IS-Extended R2.00 > > Metric: 0 ES R1 > > R2.00-00 * 0x0000000F 0x457A 1022 0/0/0 > > Auth: Length: 9 > > Area Address: 49.1155 > > NLPID: 0xCC > > Hostname: R2 > > IP Address: 125.125.125.2 > > Metric: 10 IP 172.16.52.0/24 > > Metric: 10 IP 172.16.21.0/24 > > Metric: 0 IP 125.125.125.2/32 > > Metric: 10 IS-Extended R1.00 > > Metric: 10 IS-Extended R5.03 > > R5.00-00 0x00000015 0xBBF9 1019 0/0/0 > > Auth: Length: 9 > > Area Address: 49.1155 > > NLPID: 0x81 0xCC > > Hostname: R5 > > IP Address: 125.125.125.5 > > Metric: 2 IP 172.16.52.0/24 > > Metric: 2 IP 125.125.125.5/32 > > Metric: 2 IS-Extended R5.03 > > Metric: 0 ES R5 > > R5.03-00 0x00000001 0x3976 1019 0/0/0 > > Auth: Length: 9 > > Metric: 0 IS-Extended R5.00 > > Metric: 0 IS-Extended R2.00 > > > > From: Rick Mur [mailto:[email protected]] > > Sent: Sunday, December 20, 2009 8:42 AM > > To: Thomas J. Loran > > Cc: [email protected]; Marko Milivojevic > > Subject: Re: Volume 2 section 1 Multiprotocol Challange lab ISIS task 2.2 > > > > Is R2 a full L1 router? L1/L2 routers do not receive the default, only > pure L1 ones. > > > > Otherwise try it with a different version, I know the proctorlabs 7200s > have a bit old release and there are some strange bugs in it. Maybe this is > one of them. For the workbook lab it doesn't matter, technological you are > correct :-) > > > > Try it with Dynamips on the latest 12.2S release. > > > > -- > > Regards, > > > > Rick Mur > > CCIE2 #21946 (R&S / Service Provider) > > Sr. Support Engineer - IPexpert, Inc. > > URL: http://www.IPexpert.com > > > > On 20 dec 2009, at 16:23, Thomas J. Loran wrote: > > > > > > I should have mentioned that this was before route-leaking > > > > > > From: Rick Mur [mailto:[email protected]] > > Sent: Sunday, December 20, 2009 8:20 AM > > To: Thomas J. Loran > > Cc: [email protected]<mailto:[email protected]>; > Marko Milivojevic > > Subject: Re: Volume 2 section 1 Multiprotocol Challange lab ISIS task 2.2 > > > > Once you enable route leaking, in some cases the default will not be > advertised anymore. I believe this has to do with the S train specifically. > Try and remove the route-leaking and see if you then receive a default on > R2. > > > > > > -- > > Regards, > > > > Rick Mur > > CCIE2 #21946 (R&S / Service Provider) > > Sr. Support Engineer - IPexpert, Inc. > > URL: http://www.IPexpert.com > > > > On 19 dec 2009, at 22:43, Thomas J. Loran wrote: > > > > > > > > In the Vol II section 1 multiprotocol Challenge A task 2.2 we have to > leak additional routes into R2 so everything stays connected if one of the > link goes down. I understand that. I know that I need /32 for routes > later on. > > > > What I do not understand is why R1 and R5, the L1/L2 routers do not leak > a default route into R2. I thought the L1/L2 routers were supposed to set > the ATT bit so R2 has a way out of the network > > > > R2# > > IS-IS Level-1 Link State Database: > > LSPID LSP Seq Num LSP Checksum LSP Holdtime > ATT/P/OL > > R1.00-00 0x00000031 0x6E4B 1058 0/0/0 > > R2.00-00 * 0x00000032 0x4661 977 0/0/0 > > R5.00-00 0x00000035 0xAECD 980 0/0/0 > > R5.03-00 0x00000008 0x2B7D 960 0/0/0 > > > > > > R1#sh isi database > > > > IS-IS Level-1 Link State Database: > > LSPID LSP Seq Num LSP Checksum LSP Holdtime > ATT/P/OL > > R1.00-00 * 0x00000031 0x6E4B 891 0/0/0 > > R2.00-00 0x00000032 0x4661 806 0/0/0 > > R5.00-00 0x00000035 0xAECD 809 0/0/0 > > R5.03-00 0x00000008 0x2B7D 790 0/0/0 > > IS-IS Level-2 Link State Database: > > LSPID LSP Seq Num LSP Checksum LSP Holdtime > ATT/P/OL > > R1.00-00 * 0x0000000B 0x0EBF 886 0/0/0 > > R5.00-00 0x0000000B 0x1228 518 0/0/0 > > R1# > > > > R5#sh is database > > > > IS-IS Level-1 Link State Database: > > LSPID LSP Seq Num LSP Checksum LSP Holdtime > ATT/P/OL > > R1.00-00 0x00000031 0x6E4B 844 0/0/0 > > R2.00-00 0x00000032 0x4661 763 0/0/0 > > R5.00-00 * 0x00000035 0xAECD 769 0/0/0 > > R5.03-00 * 0x00000008 0x2B7D 750 0/0/0 > > IS-IS Level-2 Link State Database: > > LSPID LSP Seq Num LSP Checksum LSP Holdtime > ATT/P/OL > > R1.00-00 0x0000000B 0x0EBF 840 0/0/0 > > R5.00-00 * 0x0000000B 0x1228 476 0/0/0 > > > > > > > > I do not see any ATT bit being set and L2 is definitely an L1 only router > and R! and R5 are definitely L1/L2 routers. In Doyles' Volume 1 Routing > book page 580 he discusses this and suggests turning on CLNS routing on both > the interface and the routers (default) I did that and am still not getting > the ATT bit set. > > > > What am I doing wrong? AM I wrong to look for the ATT bit / default > route in this scenario? > > > > All three routers are 7200 running version 12.2(18)S2 > > > > thanks > > > > Thomas Loran > > CCIE #7113 > > > > > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: > http://onlinestudylist.com/pipermail/ccie_sp/attachments/20091220/46d8af68/attachment.htm > > > > End of CCIE_SP Digest, Vol 33, Issue 23 > > *************************************** > > _______________________________________________ > > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > -- Bryan Bartik CCIE #23707 (R&S, SP), CCNP Sr. Support Engineer - IPexpert, Inc. URL: http://www.IPexpert.com
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
