OSFP redistribution into MBGP

Hi,
I've noticed lately that OSPF redistribution into MBGP(multicast address-family) is not working.
I'm using following topology with R1,R2 and R3 running one OSPF area 0 as IGP with 125.1.X.R/24, and loopbacks 120.1.R.R/24
X = neighbor routers(R1,R2=12, R2,R3=23)
R = router number
Example: R1: 125.1.12.1, R2:125.1.12.2/125.1.23.2, R3:125.1.23.3
R1---R2---R3
R1's OSPF routing table is as follows
R1(config-router)#do show ip route ospf
     125.0.0.0/24 is subnetted, 3 subnets
O       125.1.23.0 [110/20] via 125.1.12.2, 00:44:34, FastEthernet0/1
     120.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
O       120.1.3.3/32 [110/21] via 125.1.12.2, 00:44:34, FastEthernet0/1
O       120.1.2.2/32 [110/11] via 125.1.12.2, 00:39:37, FastEthernet0/1
I'm running BGP as 123 on all routers with R2 as RouteReflector and I'm also activating multicast ipv4 address family
R1(config-router)#do show bgp ipv4 multicast summary
BGP router identifier 120.1.1.1, local AS number 123
Neighbor        V    AS MsgRcvd MsgSent    TblVer InQ OutQ Up/Down State/PfxRcd
120.1.2.2       4   123      57       57        1    0    0 00:36:56        0
R2(config-router-af)#do show bgp ipv4 multicast summary
BGP router identifier 120.1.2.2, local AS number 123
Neighbor        V    AS MsgRcvd MsgSent   TblVer InQ OutQ Up/Down State/PfxRcd
120.1.1.1       4   123       58      58        1    0    0 00:37:24        0
120.1.3.3       4   123       53      53        1    0    0 00:37:59        0
R3(config-router-af)#do show bgp ipv4 multicast summary
BGP router identifier 120.1.3.3, local AS number 123
Neighbor        V    AS MsgRcvd MsgSent   TblVer InQ OutQ Up/Down State/PfxRcd
120.1.2.2       4   123       17      17        1    0    0 00:01:38        0
At this moment, everything should be ready for redistribution
R1:
router bgp 123
address-family ipv4 multicast
redistribute ospf 1 match internal
! However, nothing is injected into BGP
R1(config-router)#do show bgp ipv4 multicast
R1(config-router)#
I enable "ip multicast-routing" on all routers in the network, I'm also enabling PIM SM on all interfaces. The result is the same, no prefixes were injected into MBGP
Is there anybody who had this problem before?

I remember running into this while preparing for the CCIE.
Try to put a route-map under multicast address family that sets the next-hop. Something simple like
route-map SET_NH permit 10
set ip next-hop x.x.x.x
router bgp 123
address-family ipv4 multicast
redistribute ospf 1 match internal route-map SET_NH
I never found a good reason for why it behaves like this but try it out to see if it works.
Daniel Dib
CCIE #37149

Similar Messages

Redistribution into another protocol

Can anyone tell me why we use a metric when re distributing a protocol into another, say i want to re distribute my eigrp routes into rip, why would a specify a metric in this ? can anyone give me a good example as im stuck on this ?

Hi Carl,
Lets me try to put in simple terms. Any routing protocol have their own way to calculate which is the best path.
For suppose from a particular source to reach a particular destination there are 2 paths so a routing protocol check which is the best path and to know which is the best path every protocol has its own way.
How RIP will decide which is the best path---it will check how many hops he has to take if he take first path and how many hops it has to take if he chooses second path so the path with minimum hops will be chooses by RIP.
How EIGRP will decide which is the best path---it will calculate the metric using formula (lets not go deep into the formula) it will take into consideration bandwidth , delay by default and calculate the best path and once best path is chooses it will take that into consideration.
Now if you want RIP to be distributed into EIGRP , RIP has to follow the way how EIGRP calculate the best path not its own way. It is same as if you come and stay in your friends house you have to follow some regulation the way your friend stay in his house and not the way you follow in your house.
Same way when RIP is going into the domain where EIGRP is running RIP has to follow the way EIGRP calculates it metric and that is the reason when doing redistribution into any protocol we have to tell the redistributed protocol which is RIP here to follow the way EIGRP is calculating its metric and that is teh reason we use metric command in redistribution.
HTH, if yes please rate the helpful post.
Ankur

OSPF redistribution into EIGRP

Hello, I have router 5 and router 7 as OSPF neighbours connected via area 24.
Router 5 is running EIGRP and OSPF. Router 7 is only running OSPF. I am trying to redistribute the OSPF route 172.16.100.0/25 from router 7 into router 5's EIGRP instance.
However, I cannot seem to redistribute that network into Router 5.
Can someone please take a quick look at the configs below. I am sure it is something simple.
Thank you kindly for any help.
ROUTER 5 (EIGRP and OSPF)
ip cef
no ipv6 cef
license udi pid CISCO2911/K9 sn FTX1524HT0O
spanning-tree mode pvst
interface GigabitEthernet0/0
ip address 192.168.3.1 255.255.255.0
duplex auto
speed auto
interface GigabitEthernet0/1
ip address 192.168.1.1 255.255.255.0
duplex auto
speed auto
interface GigabitEthernet0/2
ip address 192.168.2.1 255.255.255.0
duplex auto
speed auto
interface Vlan1
no ip address
shutdown
router eigrp 100
redistribute ospf 1 metric 1000000 10 255 1 1500
network 192.168.2.0
network 192.168.1.0
auto-summary
router ospf 1
log-adjacency-changes
redistribute eigrp 100 metric-type 1 subnets
network 192.168.3.0 0.0.0.255 area 24
ip classless
ip flow-export version 9
line con 0
line aux 0
line vty 0 4
login
end
ROUTER 7 (only OSPF)
hostname Router
ip cef
no ipv6 cef
license udi pid CISCO2911/K9 sn FTX1524D5LZ
spanning-tree mode pvst
interface GigabitEthernet0/0
ip address 192.168.3.2 255.255.255.0
duplex auto
speed auto
interface GigabitEthernet0/1
ip address 172.16.100.1 255.255.255.0
duplex auto
speed auto
interface GigabitEthernet0/2
ip address 192.168.4.2 255.255.255.0
duplex auto
speed auto
interface Vlan1
no ip address
shutdown
router ospf 1
log-adjacency-changes
network 172.16.100.0 0.0.0.255 area 44
network 192.168.3.0 0.0.0.255 area 24
network 192.168.4.0 0.0.0.255 area 34
ip classless
ip flow-export version 9
line con 0
line aux 0
line vty 0 4
login
end

here is show ip route from router 5:
" 192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.1.0/24 is directly connected, GigabitEthernet0/1
L 192.168.1.1/32 is directly connected, GigabitEthernet0/1
192.168.2.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.2.0/24 is directly connected, GigabitEthernet0/2
L 192.168.2.1/32 is directly connected, GigabitEthernet0/2
192.168.3.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.3.0/24 is directly connected, GigabitEthernet0/0
L 192.168.3.1/32 is directly connected, GigabitEthernet0/0
D EX 192.168.4.0/24 [105/5376] via 192.168.2.2, 01:26:47, GigabitEthernet0/2"
Here is show ip route from router 7:
172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks
C 172.16.100.0/24 is directly connected, GigabitEthernet0/1
L 172.16.100.1/32 is directly connected, GigabitEthernet0/1
O E1 192.168.1.0/24 [110/21] via 192.168.3.1, 01:43:21, GigabitEthernet0/0
[110/21] via 192.168.4.1, 01:41:43, GigabitEthernet0/2
O E1 192.168.2.0/24 [110/21] via 192.168.3.1, 01:43:21, GigabitEthernet0/0
[110/21] via 192.168.4.1, 01:41:43, GigabitEthernet0/2
192.168.3.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.3.0/24 is directly connected, GigabitEthernet0/0
L 192.168.3.2/32 is directly connected, GigabitEthernet0/0
192.168.4.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.4.0/24 is directly connected, GigabitEthernet0/2
L 192.168.4.2/32 is directly connected, GigabitEthernet0/2

Venturing into MPLS Network

Hi all, it is just my curiousity that ended up with a small discussion like this. Here's about it...
My company has a main client which have tonnes of remote sites connecting to both their HQ and Disaster Recovery Centre. Some of the remote sites still running on frame-relay, while other is purely leased-line. There's a few question I wish I can clear up as follows:
i. When the client have frame-relay device, what we do is create a tunnel and route all the frame-relay traffic over. Is there any advantage if we change it over to MPLS?
ii. Even if comparing to leased-line services, what kind of advantages I can expect if our cliet migrate over to leased-line?
iii. If one customer is running purely on frame-relay connectivity, any difficulties will arise when they want to switch over to MPLS network?
I still never has any hands on experience on the MPLS, that's why need to gather some info in the first place, I'm currently have a glance through those MPLS guides and configuration examples, but I knew that perhaps in real-life network, things may differs, in the meanwhile I'm studying through it, hope to gather some precious opinions. Regards

Hello,
Regarding answer iii: What you have to use inside the MPLS cloud is MBGP to route the customer prefixes. In your LAN however you will have an IGP like EIGRP. This means you need mutual redistribution between MBGP and your IGP. So a routing loop can occur once you have at least two pathes. An Example:
N1-CE1 - PE1 - PE2 - CE2
with: CE1 - PE1 using RIP, CE2 - PE2 using RIP, PE1 - PE2 using MBGP and a FR PVC between CE1 - CE2 using RIP
This would be the case when you migrate from FR to MPLS VPN and do not shut down FR the very moment you activate the MPLS links.
What can happen in this scenario is: CE1 is announcing Network N1 through RIP to CE2 directly over the FR PVC and also to PE1. PE1 will redistribute N1 into MBGP, send the prefix to PE2, which will redistribute N1 into RIP and send the update to CE2.
Now depending on implementation and metrics this will result in all traffic flowing over FR or MPLS (when adjusting metrics). No major problem yet.
The problem might occur once CE1 looses network N1. It will send an update directly to CE2 and to PE1 and a race condition exists. CE2 will still have one valid path to N1 learned from PE2 and announce this one to CE1, which will announce it to PE1 and then PE2, CE2, CE1 again and so on.
This is an intermittend or even persistent routing loop, depending on what you have done with hop count during redistribution.
By designing your overall routing solution carefully you can avoid this scenario.
Hope this helps! Please rate all posts.
Regards, Martin

How can my network access the Internet?

Hi all,
All in GNS3 lab scenario I created.
Hope anybody can shed light on this matter. I have for example a multi area OSPF domain. Like all of my remote sites are in area x, y, and z and all connects to area 0, in the area 0 I have this ASBR 7200 that has an EBGP peer to R1 (ISP) that connects to R2 and R2 connects to R3, which in turn R3 connects back to my ASBR 7200.
I would like to know how can I reach all of the BGP subnets being advertised by R1 (basically the internet) from my remote sites in area x, y and z? As you can see in the topology I am using obviously RFC 1918 addresses on my network and I used all public IP addresses on the BGP routers. I would like to know how I can reach all those for example all 500,000 routes in order for my remote sites to access the internet? I can't redistribute BGP into my OSPF (since it will break). I tried configuring the subnets on my remote sites on the ASBR 7200 using network command, and the BGP routers can see those subnets, but inside my network I cannot see the subnet that I have created in R3 (pretending it's an internet site). What seems to be missing in my config in the ASBR?
Please any inputs gladly appreciated.
Please remove configuration in 3RD_PARTY-7200-ASBR router, I would like to know how can my local sites see loopback 99.99.99.0 in R3 without redistribution into OSPF...
redistribute bgp 65535 subnets

Yes you will need to NAT at some point to go from private to public address space. Here is a basic configuration if you are interested:
interface F8
ip nat inside
interface G0
ip nat outside
ip access-list standard NAT
permit 192.168.11.0 0.0.0.255
ip nat inside source list NAT interface G0 overload

How does set metric-type internal (bgp) work?

i can't realise how the command "set metric-type internal " to work.
bgp announce to ebgp use the igp next-hop metric as the med.
the igp means only isis?
does ospf use it ?
will you tell me how to use it ? give me an example . thinks

Hi,
This command can be used into two different contexts:
1- Redistribution into ISIS
When you are redistributing routes into ISIS, you have the choice to set the metric-type as internal (between 0 and 64) or external (between 65 and 128)
Internal metric are always prefer over external metric
2- Set the MED to reflect IGP cost to the NH on eBGP updates
You are receiving an iBGP update and before sending it to your eBGP peers, you want the MED for that prefix set to your IGP cost to the iBGP peer announcing this prefix.
In this case the IGP can be anything.
This command is not necessary if you are redistributing the route into BGP directly instead of receiving them from iBGP. In such case, the MED reflects by default the IGP cost of the redistributed prefix.
HTH
Laurent.

External route with Down Bit set by CE router

I have a question regarding the Down Bit. All the documentation I see concentrates on the redistribution of the MP-BGP into OSPF but I want to know more about the OSPF redistribution into MP-BGP. I think the rule is different for Type3 and Type5 LSAs.
Lets say the CE redistributes a RIP route into OSPF, creating an LSA Type 5 route sent to the PE router - with the Down Bit set.
Will this PE router redistribute this route into MP-BGP?
I know that LSA Type 3 summary routes will not be redistributed into MP-BGP if the Down Bit is set but I am wondering about external OSPF routes with the Down Bit set????
I am assuming that redistribution of RIP into OSPF at the CE does infact set this Down Bit before passing on to the PE router?

How can step 2 in the sequence description say that PE2-AS1 receives an OSPF route with the Down Bit already set? This comes from the CE.
I find this all very confusing when I check out these sequences - I thought only the PE router assigns Down Bit to LSA Type 3 routes?
All the other references I see show how PE1-AS1 would normally set the Down Bit as it is redistributed back into OSPF?
Thanks for your help - I feel I am getting closer. It is just this second step that is throwing me!
Cheers
Walter

How do you Redistribution EIGRP into OSPF and maintain a distance of 250 for a static route?

Ok, I have scoured the forums long enough and have to post. The design is below. I moved a firewall to our new data center, which required adding some static routes for VPN connections and broadband backups. To minimize the amount of static routes I redistribute static into EIGRP with a route-map and prefix-list.
My problem is the next part of my network. When the data leaves my 56128's it hits an edge device connecting to our dark fiber. On this edge device I am running OSPF onto the dark fiber, then redistribute some EIGRP subnets into OSPF and again all is well.
Everything works up until the point the redistributed routes hit my RIB at my main data center where I am running IBGP. IBPG is run between our MPLS router and core for all our remote sites. When my backup route from the 56128's hits the cores, it supersedes the BGP route because the AD route O E2 [110/20] is lower than the BGP AD B [200/0]. Given the configuration below what can be done to remedy this? Oh when I redistribute I can only change the AD for the backup routes, all other routes should stay the same.
56128's where my static routes are:
ip route 192.168.101.0/24 192.168.30.77 name firewall 250
router eigrp 65100
redistribute static route-map Static-To-Eigrp
route-map Static-To-Eigrp permit 10
match ip address prefix-list Static2Eigrp
ip prefix-list Static2Eigrp seq 2 permit 192.168.101.0/24
Edge device:
router eigrp 65100
network 172.18.0.5 0.0.0.0
network 172.18.0.32 0.0.0.3
network 172.18.0.36 0.0.0.3
redistribute ospf 65100 metric 2000000 0 255 1 1500
redistribute static metric 200000 0 255 1 1500 route-map STATICS_INTO_EIGRP
passive-interface default
no passive-interface Port-channel11
no passive-interface Port-channel12
eigrp router-id 172.18.0.5
router ospf 65100
router-id 172.18.0.5
log-adjacency-changes
redistribute eigrp 65100 subnets route-map EIGRP_INTO_OSPF
passive-interface default
no passive-interface GigabitEthernet1/0/1
no passive-interface GigabitEthernet1/0/2
no passive-interface GigabitEthernet2/0/1
no passive-interface GigabitEthernet2/0/2
network 172.18.0.0 0.0.255.255 area 0
ip prefix-list EIGRP_INTO_OSPF seq 5 permit 172.18.0.0/16 le 32
ip prefix-list EIGRP_INTO_OSPF seq 10 permit 192.168.94.0/29 le 32
ip prefix-list EIGRP_INTO_OSPF seq 15 permit 192.168.26.32/29 le 32
ip prefix-list EIGRP_INTO_OSPF seq 20 permit 192.168.30.72/29 le 32
ip prefix-list EIGRP_INTO_OSPF seq 25 permit 192.168.20.128/25 le 32
ip prefix-list EIGRP_INTO_OSPF seq 26 permit 192.168.101.0/24 le 32 <- Backup Route for MPLS Remote Office
route-map EIGRP_INTO_OSPF permit 10
match ip address prefix-list EIGRP_INTO_OSPF

So in the case of a /24. If it were say broken up into /25's? From our remote sites we are using aggregate-address summary-only. Not sure how I would advertise a more specific route via BGP, sorry.
I didnt have this problem until I moved my firewalls. They plugged into the cores where IBGP was running and the static never kicked in unless the bgp route disappeared. I guess I could use my static redistribution for my VPN sites and use statics across the cores for the handful of backup links I have.

Redistribution of "global" OSPF into a VRF

Im' trying to redistribute several routes learned via OSPF into a VRF. This VRF use EIGRP as routing protocol.
I'm not able to see any entry in the vrf table.
Have anybody done a similar things or can point me to samples and tips ?
Thanks
Marco
This is what I have done:
ip vrf 1
rd 1000:1
route-target export 1000:1
route-target import 1000:1
ip vrf 2
rd 1001:2
route-target export 1001:2
route-target import 1001:2
interface FastEthernet0/0
description connessione al porta 4/12
no ip address
duplex full
speed 100
interface FastEthernet0/0.1
description VLAN 1 per test
encapsulation dot1Q 34
ip vrf forwarding 1
ip address 192.168.230.1 255.255.255.248
ip nat inside
standby 1 ip 192.168.230.6
standby 1 priority 110
standby 1 track GigabitEthernet6/0.2
interface FastEthernet0/0.2
description VLAN 2 per test SNASW
encapsulation dot1Q 35
ip vrf forwarding 2
ip address 192.168.230.57 255.255.255.248
interface GigabitEthernet6/0.1
description vlan TEST_NAT
encapsulation dot1Q 42
ip address 192.168.230.9 255.255.255.248
standby 2 ip 192.168.230.14
standby 2 priority 110
interface GigabitEthernet6/0.2
description vlan NAT
encapsulation dot1Q 43
ip address 192.168.230.17 255.255.255.248
standby 3 ip 192.168.230.22
standby 3 priority 110
standby 3 track FastEthernet0/0.1
router eigrp 2000
auto-summary
address-family ipv4 vrf 2
network 192.168.230.56 0.0.0.3
no auto-summary
autonomous-system 1001
exit-address-family
address-family ipv4 vrf 1
network 192.168.230.0 0.0.0.3
no auto-summary
autonomous-system 1000
exit-address-family
no eigrp log-neighbor-changes
router ospf 1000
log-adjacency-changes
passive-interface FastEthernet0/0.1
passive-interface GigabitEthernet6/0.1
network 192.168.230.16 0.0.0.7 area 100.100.100.100

Hi,
I don't understand very well your question, because I really don't know if you are trying to configure VPN's over MPLS but, maybe this can help you.
When you are configuring VPN's over MPLS:
- Supported by VPN aware routing protocols: eBGP, OSPF, RIPv2, Static Routes. The EIGRP is not a supported VPN, vrf Protocol.
- When you are configuring VPN's over MPLS you have to configure BGP and the address family for BGP.
- Also you have to be very careful when you are assigning OSPF to a vrf.
An example:
router ospf 1000 vrf Customer_ABC
network 192.168.230.16 0.0.0.7 area z
redistribute bgp xxx
router bgp xxx
address-family ipv4 vrf Customer_ABC
redistribute ospf 1000
There's more to configure in bgp, like neighbors address family vpnv4, etc.
Sorry if this don't help you or if you already knew this.
Regards,
Hector

Redistribution from ospf into eigrp

If I have 3 routers running ospf and want to redistribute eigrp into this, what metrics do I need to use ?
thanks

I'm assuming you are wanting one way redistribute. If you are wanting to redistribute EIGRP into OSPF you will need to use a COST based metric such as;
redistribute eigrp 65001 metric 100 subnets
-or-
redistribute eigrp 65001 subnets
default-metric 100
A metric is not required for OSPF, however, if you redistribute an IGP into OSPF without specifying a default-metric, it will be assigned a metric of 20. The OSPF metric is based on the 10 to the 8th / bandwidth of the link. For example, Ethernet cost is 10.
Please rate post if it helped.
Thanks!

Adobe AIR Runtime Redistribution and Native Installer

Will there be new instructions for Adobe AIR 2.0 Runtime Redistribution? In particular, I'm looking for instructions on how to use the runtime redistribution installer to perform a "side-car installation" of AIR 2 alongside an application that uses the NativeProcess API (and so must be built into a native installer instead of a .air file).
Thanks!

Thirded!
On a test deployment using SCCM and the supplied Adobe AIR Runtime Installer files, we have managed to install our application with the 1.5.3 Air Framework with no major issues other than having to disable the Auto Update feature that doesnt really work in a corporate environment. Everything was absolutely fine until the release of AIR 2. Now, the test machines are prompted to install the updated Adobe Air 2 framework once a week, see an excerpt from an Adobe blog post below:
"In addition, once a week AIR apps check to see if an AIR update is available, and if so, users are presented with the option to update to the most up‐to‐date version, helping to ensure that end users get the benefits of improved security and performance."
That sounds great right? Except my users (like many other corporate users) don't have Admin permissions on their machines (hence the use of SCCM), with the result being resultant error messages when a user attemptes to install the AIR framework update without the necessary permissions.
All of the above would be fine if the Adobe AIR Runtime Installer files were updated to include the latest version of the runtime. This of course hasn't been done yet - does anyone know when this may happen? Can anyone help me with this or offer any advice?
I hope the above makes sense and I would really appreciate any help or advice!
Thanks!

How to bundle java help class into jar file ?

Hi, all,
I have some package in my project, with which I have a java help jar file as classpath, when I run my project, I need the jh.jar file in directory /jar/jh.jar.
Now, I bundled all my class packages into a jar file, my.jar, together with the /jar directory. When i run my jar file with command:
java -jar my.jar
It tells me couldn't find javahelp class.
What shall I do? How can I create my jar file with the jh.jar?
Thanks in advance.

I think you'd be better off just adding the jh.jar as
a classpath argument and running it like that:
java -classpath /myjavalibdir/jh.jar -jar myjar.jar
...otherwise you're stepping into redistribution of
binary issues licensing-wise. That won't work either; when you run java with the -jar option, it ignores both the -classpath option and the CLASSPATH environment variable. However, it will see jh.jar automatically if you put it in the <path-to-java>/jre/lib/ext directory. But for distribution purposes, it might be simpler just to combime the contents of jh.jar into myjar.jar (if you use Ant, its <jar> task makes that very easy). Or, you can just run it this way:java -classpath myjar.jar;jar/jh.jar MyMainClassBTW, I don't think redistribution is a problem; otherwise how anyone even use JavaHelp?

Best-practice to redistribute NAT entries into OSPF

I have several different subnets that are all either NAT'd or accessible via a VPN. There's no actual route on the ASA to the addresses, and they're not directly connected, eliminating the usual redistribution commands.
What is the best-practice for redistributing such entries into an OSPF area? In the past, I've had static entries on the upstream firewall, allowing the rest of the network to see this. I'm trying to get rid of as many static routes as possible (or at least make them a floating route so as to provide backup should something in OSPF fail), but am having difficulty figuring out how to redistribute these into the OSPF area.
I can't use a summary-address command as there's no external routes that are being redistributed. The area range command is out as I don't have a separate area that routes are being redistributed from.
One thought I've had is to create a static null route for each subnet (allowing me to redistribute static, and have the static entries only on the originating box), but I imagine rather than NAT'ng or open the site-to-site VPN, it would discard traffic (as the destination is null).
Any ideas on what to do when you have "imaginary" addresses that don't exist anywhere but in NAT entries or that's defined as interesting traffic for a site-to-site VPN?
Thanks in advance.

I have the code working without use of config files. I am just disappointed that it is not working using the configuration files. That was one of the primary intents of my code re-factoring.
Katherine
Xiong , If you are proposing this as an answer then does this imply that Microsoft's stance is not to use configuration files with SSIS?? Please answer.
SM

Inject BGP Default Routes into Multiple VRF before Best Path Selection

Hello,
I have the following setup:
Multiple Border Routers with eBGP sessions to external AS. We receive a default route from this multiple AS to keep the Table manageable. We noticed an important part of our traffic was been SW routed instead of CEF when we had the Full Internet table. Router Resources came to the ground when we changed to a default.
Now I want to separate this default routes into different VRF. Attached is the Diagram.
My question is, the multiple default route all go into the BGP Table. The BGP table then select the best route and place it on the RIB and then to the FIB.
I want to redistribute the different Route on the BGP table prior to the Best path selection algorithm and placed on the RIB.
How can I achieve this?

Hi,
Redistribution of multiple routes to same prefix is not possible. Even if you have configured BGP multipath and all different bgp routes got installed into routing table, during redistribution only route will be redistributed.
Also would like to understand the requirement of redistributing multiple BGP routes in to IGP. As per your diagram, 3 different eBGP sessions are on three different routers, so you can prefer eBGP route over iBGP received from other routers and can distribute eBGP route to IGP from each router. Thus you will have three different default routes in to IGP in core.
Please don't forget to rate this post if it has been helpful
- Akash

BGP to OSPF redistribution with VRFs

I am having a problem with redistribution of routes between BGP and OSPF when using VRFs mapping to VLANs between the PE and CE.
In this lab I've put together I have R4 and R5 communicating with eachother via BGP with MPLS. If I redistribute the BGP into OSPF and delivering the connection to the CE without VLANs it works fine. If I want to essentially keep the same primary network going into the other side of the BGP but send the VRF over a VLAN to the next router the redistribution doesn't happen.
In this example I have
192.168.100.0/24 (R6) --ospf-- (R4) --BGP-- (R5) --ospf-- (R7) 192.168.200.0/24
Between R4 and R5 is the core network running ospf (R1 - R3).
Can anyone point me in the right direction why this isn't working? I am obviously missing something here.
Thanks,
Mike

Hi Mike,
You need to add capability vrf-lite under ospf process of R6 and R7 because they are configured with VRF-lite. This command will disable the check usually done on the PE to avoid routing loops.
HTH
Laurent.

OSFP redistribution into MBGP

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