From: Timothy Ouellette (timoue@cogeco.ca)
Date: Thu Oct 24 2002 - 03:27:41 GMT-3
table-map/bgp/ospf/origin code question. I'm having some trouble
getting it to work. r1 has a loopback 1.1.1.1
and has a network statement in BGP for it, i'm taking the bgp routes,
putting them into ospf and trying to tag them (with origin code) and
then when that route makes it over to r3, trying to read the tag and set
it again so it shows "i" and not incomplete but I can't seem to get the
external tag data into ospf.
Here's the setup..
1.1.1.1 (lo1 in BGP as 1) R1---ospf0----r2----ospf0------r3(3.3.3.3 in
bgp as 3)
here's the relevant configs
r1
nterface Loopback1
ip address 1.1.1.1 255.255.255.0
!
interface Serial0
ip address 192.168.1.1 255.255.255.0
encapsulation frame-relay
!
router ospf 1
log-adjacency-changes
redistribute bgp 1 subnets
network 192.168.1.0 0.0.0.255 area 0
neighbor 192.168.1.2 priority 1
!
router bgp 1
table-map autotag
bgp log-neighbor-changes
network 1.1.1.0 mask 255.255.255.0
redistribute ospf 1 metric 5 match internal external 1 external 2
route-map tags
no auto-summary
!
route-map tags permit 10
set as-path tag
!
route-map autotag permit 10
set automatic-tag
r2
interface Ethernet0
ip address 172.16.1.2 255.255.255.0
!
interface Serial0
ip address 192.168.1.2 255.255.255.0
encapsulation frame-relay
frame-relay map ip 192.168.1.1 201 broadcast
!
router ospf 1
log-adjacency-changes
network 172.16.1.0 0.0.0.255 area 0
network 192.168.1.0 0.0.0.255 area 0
neighbor 192.168.1.1
r3
nterface Loopback0
ip address 3.3.3.3 255.255.255.0
!
interface Ethernet0
ip address 172.16.1.3 255.255.255.0
!
router ospf 1
log-adjacency-changes
redistribute bgp 3 subnets
network 172.16.1.0 0.0.0.255 area 0
!
router bgp 3
table-map autotag
bgp log-neighbor-changes
network 3.3.3.0 mask 255.255.255.0
redistribute ospf 1 metric 5 match internal external 1 external 2
route-map tags
no auto-summary
!
route-map tags permit 10
set as-path tag
!
route-map autotag permit 10
set automatic-tag
here's the info about 1.1.1.0/24 from r1 but from r3's perspective.
r3#sh ip bgp 1.1.1.0
BGP routing table entry for 1.1.1.0/24, version 7
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Not advertised to any peer
Local
172.16.1.2 from 0.0.0.0 (3.3.3.3)
Origin incomplete, metric 5, localpref 100, weight 32768, valid,
sourced, best
r3#
3#sh ip ospf data e
OSPF Router with ID (3.3.3.3) (Process ID 1)
Type-5 AS External Link States
Routing Bit Set on this LSA
LS age: 879
Options: (No TOS-capability, DC)
LS Type: AS External Link
Link State ID: 1.1.1.0 (External Network Number )
Advertising Router: 1.1.1.1
LS Seq Number: 80000001
Checksum: 0xE6C5
Length: 36
Network Mask: /24
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 1
Forward Address: 0.0.0.0
External Route Tag: 0
LS age: 815
Options: (No TOS-capability, DC)
LS Type: AS External Link
Link State ID: 3.3.3.0 (External Network Number )
Advertising Router: 3.3.3.3
LS Seq Number: 80000001
Checksum: 0x623C
Length: 36
Network Mask: /24
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 1
Forward Address: 0.0.0.0
External Route Tag: 0
r3#
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