From: Huy Luu (hluu@xxxxxxxxxxxx)
Date: Wed Mar 20 2002 - 17:19:10 GMT-3
My config
R5---------R6
R5 has static route to 12.12.0.0 to next hop null 0.
R5 learned 137.20.30.0/24 through OSPF
R5#sho run
Building configuration...
Current configuration : 2465 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname R5
!
no logging console
no logging monitor
!
!
!
!
!
ip subnet-zero
no ip domain-lookup
!
appletalk routing
ipx routing 0060.5cf4.721f
!
!
!
interface Loopback0
no ip address
no ip route-cache
no ip mroute-cache
!
interface Loopback10
ip address 1.1.1.1 255.255.255.0
!
interface Ethernet0
ip address 137.20.50.1 255.255.255.0
no ip route-cache
ip ospf cost 1
ip ospf priority 255
no ip mroute-cache
appletalk cable-range 600-600 600.19
appletalk zone R5E0
ipx network 510
ipx network 590 encapsulation SAP secondary
!
interface Serial0
ip address 137.20.101.5 255.255.255.0
no ip route-cache
ip ospf network point-to-multipoint
no ip mroute-cache
appletalk cable-range 300-300 300.109
appletalk zone R1S02
ipx input-sap-filter 1000
ipx network 230
custom-queue-list 1
!
interface Serial1
no ip address
no ip route-cache
no ip mroute-cache
shutdown
!
router ospf 100
log-adjacency-changes
redistribute static
network 137.20.101.0 0.0.0.255 area 0
!
router bgp 2
no synchronization
bgp log-neighbor-changes
network 12.12.0.0 mask 255.255.0.0
network 137.20.30.0 mask 255.255.255.0
neighbor 137.20.50.7 remote-as 3
neighbor 137.20.50.7 soft-reconfiguration inbound
no auto-summary
!
ip classless
ip route 12.12.0.0 255.255.0.0 Null0
no ip http server
ip ospf name-lookup
!
!
ip prefix-list ALL seq 5 permit 0.0.0.0/0 le 32
!
ip prefix-list NORIP seq 5 permit 192.168.100.0/24
!
ip prefix-list RIPROUTE seq 5 permit 192.168.100.0/24
access-list 2 deny 200.200.0.0 0.0.255.255
access-list 2 permit any
access-list 19 permit any
access-list 20 permit 192.168.100.0 0.0.0.255
access-list 35 permit 192.168.1.0 0.0.254.0
access-list 120 permit ip 192.168.100.0 0.0.0.255 any
access-list 1000 permit 320 4 Fileservers
access-list 1000 permit 320 4 Fileserver
queue-list 1 protocol ip 1 tcp telnet
queue-list 1 protocol ip 2
queue-list 1 protocol ipx 3
queue-list 1 default 4
route-map NORIP deny 10
match ip address 120
!
route-map NORIP deny 15
match ip address 35
!
route-map NORIP permit 20
match ip address 19
!
!
!
!
ipx router eigrp 2
network 230
!
!
!
alias exec sixr sho ipx route
alias exec sixb sho ipx interface brief
!
line con 0
line aux 0
transport input all
line vty 0 4
password cisco
no login
!
end
R5 is advertising both networks with the mask specified
R5#sho ip bgp neigh 137.20.50.7 ad
BGP table version is 50, local router ID is 137.20.101.5
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 12.12.0.0/16 0.0.0.0 0 32768 i
*> 137.20.30.0/24 137.20.101.3 65 32768 i
R5#sho ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter
area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Loopback10
137.20.0.0/16 is variably subnetted, 6 subnets, 2 masks
O IA 137.20.30.0/24 [110/65] via 137.20.101.3, 00:18:48, Serial0
O IA 137.20.3.0/24 [110/65] via 137.20.101.3, 00:18:48, Serial0
C 137.20.50.0/24 is directly connected, Ethernet0
C 137.20.101.0/24 is directly connected, Serial0
O IA 137.20.103.0/24 [110/74] via 137.20.101.3, 00:18:48, Serial0
O 137.20.101.3/32 [110/64] via 137.20.101.3, 00:18:49, Serial0
12.0.0.0/16 is subnetted, 1 subnets
S 12.12.0.0 is directly connected, Null0
Now I use the network statement without the mask option
R5#sho run
Building configuration...
Current configuration : 2429 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname R5
!
no logging console
no logging monitor
!
!
!
!
!
ip subnet-zero
no ip domain-lookup
!
appletalk routing
ipx routing 0060.5cf4.721f
!
!
!
interface Loopback0
no ip address
no ip route-cache
no ip mroute-cache
!
interface Loopback10
ip address 1.1.1.1 255.255.255.0
!
interface Ethernet0
ip address 137.20.50.1 255.255.255.0
no ip route-cache
ip ospf cost 1
ip ospf priority 255
no ip mroute-cache
appletalk cable-range 600-600 600.19
appletalk zone R5E0
ipx network 510
ipx network 590 encapsulation SAP secondary
!
interface Serial0
ip address 137.20.101.5 255.255.255.0
no ip route-cache
ip ospf network point-to-multipoint
no ip mroute-cache
appletalk cable-range 300-300 300.109
appletalk zone R1S02
ipx input-sap-filter 1000
ipx network 230
custom-queue-list 1
!
interface Serial1
no ip address
no ip route-cache
no ip mroute-cache
shutdown
!
router ospf 100
log-adjacency-changes
redistribute static
network 137.20.101.0 0.0.0.255 area 0
!
router bgp 2
no synchronization
bgp log-neighbor-changes
network 1.1.1.0
network 12.12.0.0
network 137.20.30.0
network 137.20.103.0
neighbor 137.20.50.7 remote-as 3
neighbor 137.20.50.7 soft-reconfiguration inbound
no auto-summary
!
R5#sho ip bgp
NONE
R5#sho ip bgp neigh 137.20.50.7 ad
NONE
R5#sho ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter
area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Loopback10
137.20.0.0/16 is variably subnetted, 6 subnets, 2 masks
O IA 137.20.30.0/24 [110/65] via 137.20.101.3, 00:21:57, Serial0
O IA 137.20.3.0/24 [110/65] via 137.20.101.3, 00:21:57, Serial0
C 137.20.50.0/24 is directly connected, Ethernet0
C 137.20.101.0/24 is directly connected, Serial0
O IA 137.20.103.0/24 [110/74] via 137.20.101.3, 00:21:57, Serial0
O 137.20.101.3/32 [110/64] via 137.20.101.3, 00:21:58, Serial0
12.0.0.0/16 is subnetted, 1 subnets
S 12.12.0.0 is directly connected, Null0
Tshon
<tshon@netzero To: Huy Luu <hluu@veroxity.com>
.net> cc: ccielab@groupstudy.com, Lab Ca
ndidate <labccie@yahoo.com>,
nobody@groupstudy.com
03/20/02 03:19 Subject: Re: BGP routes don't show
up in BGP table
PM
Why don't you repaste the configs and the routing tables now, for the
archives. So that people
can later refence what you did before and what you did after.
Huy Luu wrote:
I got it to work, by adding the additional mask command.
But I'm still confuse. First I used the network 1.1.1.0, which did
not
work. I also added no sync and no auto-summary, which did not work.
I
thought that if I use the network command to advertise a network, and
if I
have a valid route to a subnet of that network, it should advertise
the
network and auto summarize at the classful boundary. In this example
the
router should summarize and advertise 1.0.0.0/8 if I use the network
statement 1.1.1.0, but it did not.
Tshon
<tshon@netzero To: Lab Candidate
<labccie@yahoo.com>
.net> cc:
ccielab@groupstudy.com
Sent by: Subject: Re: BGP routes
don't show up in BGP table
nobody@groupst
udy.com
03/20/02 02:31
PM
Please respond
to Tshon
You will only advertis networks you can reach. You don't have a
network
1.1.1.1 in your routing table.
You don't have a network 2.2.2.2 in your routing table. Try Network
1.1.1.0 and 2.2.2.0.
Tshon
Lab Candidate wrote:
Here is a basic BGP setup with r1 and r2:
r1 AS100 r2 AS200
s0----------------s0
lo0 1.1.1.1 lo0 2.2.2.2
I am advertising both r1's and r2's loopbacks lo0 by putting
under a
network statement.
but somehow they never showed up in the other's BGP table. What
am I doing
wrong?
here is the configs and output from both r1 and r2:
r1#
1d00h: BGP: 192.168.1.2 went from Idle to Active
1d00h: BGP: 192.168.1.2 open active, delay 15324ms
1d00h: BGP: 192.168.1.2 open active, local address 192.168.1.1
1d00h: BGP: scanning routing tables
1d00h: BGP: nettable_scan: invalidate local path for 1.0.0.0/8
1d00h: BGP: nettable_scan: invalidate sourced path for 1.0.0.0/8
1d00h: BGP: no valid path for 1.0.0.0/8
1d00h: BGP: nettable_walker 1.0.0.0/8 no best path
r1#sh ip ro
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile,
B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter
area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external
type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E -
EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * -
candidate
default
U - per-user static route, o - ODR
Gateway of last resort is not set
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Loopback0
C 192.168.1.0/24 is directly connected, Serial0
r1#sh ip bgp
{blank}
r1#
r1#sh run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r1
!
!
ip subnet-zero
!
!
!
interface Loopback0
ip address 1.1.1.1 255.255.255.0
no ip directed-broadcast
!
interface Ethernet0
no ip address
no ip directed-broadcast
shutdown
!
interface Serial0
ip address 192.168.1.1 255.255.255.0
no ip directed-broadcast
clockrate 64000
!
interface Serial1
no ip address
no ip directed-broadcast
shutdown
!
router bgp 100
network 1.1.1.1
neighbor 192.168
.1.2 remote-as 200
!
ip classless
!
!
line con 0
exec-timeout 0 0
logging synchronous
transport input none
line aux 0
line vty 0 4
!
end
r1#
r1#sh ip bgp nei
BGP neighbor is 192.168.1.2, remote AS 200, external link
Index 1, Offset 0, Mask 0x2
BGP version 4, remote router ID 2.2.2.2
BGP state = Established, table version = 25, up for 00:03:02
Last read 00:00:03, hold time is 180, keepalive interval is 60
seconds
Minimum time between advertisement runs is 30 seconds
Received 6 messages, 0 notifications, 0 in queue
Sent 6 messages, 0 notifications, 0 in queue
Prefix advertised 0, suppressed 0, withdrawn 0
Connections established 1; dropped 0
Last reset never
0 accepted prefixes consume 0 bytes
0 history paths consume 0 bytes
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Local host: 192.168.1.1, Local port: 11000
Foreign host: 192.168.1.2, Foreign port: 179
Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0
bytes)
Event Timers (current time is 0x545E3C0):
Timer Starts Wakeups Next
Retrans 19 12 0x0
TimeWait 0 0 0x0
AckHold 6 2 0x0
SendWnd 0 0 0x0
KeepAlive 0 0 0x0
GiveUp 0 0 0x0
PmtuAger 0 0 0x0
DeadWait 0 0 0x0
iss: 278568032 snduna: 278568157 sndnxt: 278568157
sndwnd: 16260
irs: 2897909981 rcvnxt: 2897910106 rcvwnd: 16260
delrcvwnd: 124
SRTT: 614 ms, RTTO: 4262 ms, RTV: 1517 ms, KRTT: 0 ms
minRTT: 24 ms, maxRTT: 300 ms, ACK hold: 200 ms
Flags: higher precedence, nagle
Datagrams (max data segment is 1460 bytes):
Rcvd: 11 (out of order: 0), with
data: 6, total data bytes: 124
Sent: 10 (retransmit: 12), with data: 6, total data bytes: 124
r1#
=================== r2 config and debug =================
r2#sh run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r2
!
!
ip subnet-zero
!
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.0
no ip directed-broadcast
!
interface Ethernet0
no ip address
no ip directed-broadcast
shutdown
!
interface Serial0
ip address 192.168.1.2 255.255.255.0
no ip directed-broadcast
!
interface Serial1
no ip address
no ip directed-broadcast
shutdown
!
router bgp 200
network 2.2.2.2
neighbor 192.168.1.1 remote-as 100
!
ip classless
!
!
line con 0
transport input none
line aux 0
line vty 0 4
!
end
r2#
r2#sh ip
int b
Interface IP-Address OK? Method Status
Protocol
Ethernet0 unassigned YES unset
administratively down
down
Loopback0 2.2.2.2 YES manual up
up
Serial0 192.168.1.2 YES manual up
up
Serial1 unassigned YES unset
administratively down
down
r2#sh ip ro
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile,
B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter
area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external
type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E -
EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * -
candidate
default
U - per-user static route, o - ODR
Gateway of last resort is not set
2.0.0.0/24 is subnetted, 1 subnets
C 2.2.2.0 is directly connected, Loopback0
C 192.168.1.0/24 is directly connected, Serial0
r2#sh ip bgp
{blank}
r2#
r2#sh ip bgp nei
r2#sh ip bgp neighbors
BGP neighbor is 192.168.1.1, remote AS 100, external link
Index 1, Offset 0, Mask 0x2
BGP version 4, remote router ID 1.1.1.1
BGP state = Established, table version = 23, up for 00:00:17
Last read 00:00:16, hold time is 180, keepalive interval is 60
seconds
Minimum time between advertisement runs is 30 seconds
Received 3 messages, 0 notifications, 0 in queue
Sent 3 messages, 0 notifications, 0 in queue
Prefix advertised 0, suppressed 0, withdrawn 0
Connections established 1; dropped 0
Last reset never
0 accepted prefixes consume 0 bytes
0 history paths consume 0 bytes
Conne
ction state is ESTAB, I/O status: 1, unread input bytes: 0
Local host: 192.168.1.2, Local port: 179
Foreign host: 192.168.1.1, Foreign port: 11000
Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0
bytes)
Event Timers (current time is 0xF02CC):
Timer Starts Wakeups Next
Retrans 4 0 0x0
TimeWait 0 0 0x0
AckHold 3 2 0x0
SendWnd 0 0 0x0
KeepAlive 0 0 0x0
GiveUp 0 0 0x0
PmtuAger 0 0 0x0
DeadWait 0 0 0x0
iss: 2897909981 snduna: 2897910049 sndnxt: 2897910049
sndwnd: 16317
irs: 278568032 rcvnxt: 278568100 rcvwnd: 16317
delrcvwnd: 67
SRTT: 710 ms, RTTO: 4442 ms, RTV: 1511 ms, KRTT: 0 ms
minRTT: 16 ms, m
axRTT: 300 ms, ACK hold: 200 ms
Flags: passive open, nagle, gen tcbs
Datagrams (max data segment is 1460 bytes):
Rcvd: 6 (out of order: 0), with data: 3, total data bytes: 67
Sent: 6 (retransmit: 0), with data: 3, total data bytes: 67
r2#sh ip bgp neighbors ?
A.B.C.D Neighbor to display information about
<cr>
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:57:14 GMT-3