I don't have the configs in front of me to look at, but I
would assume that the "OSPF2EIGRP" route-map (the only one called on both
routers) would have the "match tag" in a deny statement there to prevent
circular redistribution.
Tags are certainly a good thing to mark routes, but you're
correct, if you never match them it doens't help much!
Look at the configs for that lab and see whether or not the
route-map contained that filtering technique. I'll try to dig up all the
configs to check myself as well, but off the top of my head that's where they
SHOULD be based on what I see there!
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI-M/JNCI-J
IPExpert VP -
Curriculum Development
IPExpert Sr.
Technical Instructor
[EMAIL PROTECTED]
http://www.ipexpert.com
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mohamed Farouk
Sent: Thursday, July 06, 2006 12:00 PM
To: [email protected]
Subject: [OSL | CCIE_RS] Idea behind Redistribution
Dear Scott
I was asking about the idea behind the configurations of r5 and r6 in
section 28 regarding optimizing routing between the OSPF and
EIGRP domain?
On R5
router eigrp 1
redistribute connected route-map connect2eigrp
redistribute ospf 1 route-map ospf2eigrp
network 150.50.50.0 0.0.0.255
distance 109 0.0.0.0 255.255.255.255
no auto-summary
!
router ospf 1
log-adjacency-changes
redistribute connected subnets route-map connect2ospf
redistribute eigrp 1 subnets tag 555
network 150.50.5.5 0.0.0.0 area 0
network 150.50.100.0 0.0.0.255 area 0
network 150.50.101.4 0.0.0.3 area 0
!
redistribute connected route-map connect2eigrp
redistribute ospf 1 route-map ospf2eigrp
network 150.50.50.0 0.0.0.255
distance 109 0.0.0.0 255.255.255.255
no auto-summary
!
router ospf 1
log-adjacency-changes
redistribute connected subnets route-map connect2ospf
redistribute eigrp 1 subnets tag 555
network 150.50.5.5 0.0.0.0 area 0
network 150.50.100.0 0.0.0.255 area 0
network 150.50.101.4 0.0.0.3 area 0
!
On R6
router eigrp 1
redistribute connected route-map connect2eigrp
redistribute ospf 1 route-map ospf2eigrp
network 150.50.60.0 0.0.0.255
no auto-summary
!
router ospf 1
log-adjacency-changes
redistribute connected subnets route-map connect2ospf
redistribute eigrp 1 subnets tag 666
network 150.50.70.0 0.0.0.3 area 9
network 150.50.71.0 0.0.0.3 area 9
network 150.50.100.0 0.0.0.255 area 0
!
redistribute connected route-map connect2eigrp
redistribute ospf 1 route-map ospf2eigrp
network 150.50.60.0 0.0.0.255
no auto-summary
!
router ospf 1
log-adjacency-changes
redistribute connected subnets route-map connect2ospf
redistribute eigrp 1 subnets tag 666
network 150.50.70.0 0.0.0.3 area 9
network 150.50.71.0 0.0.0.3 area 9
network 150.50.100.0 0.0.0.255 area 0
!
I am seeing that you set tags but you didn't match on it anywhere.
I did it blindly and it worked perfectly but i don't yet got the idea
behind doing such configuration.
It will be great if you just give an illustration about this subject.
Thanks/Regards
