Firstly, I must say thank you so much for getting back to me :-)
Sorry about this, but the network is actually like this:
Gw1.bne2 --------- Gw2.bne ------------Gw1.bne ------------ MLS2 (cat
6500) ----- Avior (Linux)
|
|
|---------------------------------------------------------------------------
----------------|
Tunnel
>I agree. Are you terminiating the tunnel on gw1.bne? Or do you have
>another route from gw1.bne2 to gw1.bne? Becuase it looks like gw1.bne is
>learning it's route directly from gw1.bne2. If you could include the config
>from gw1.bne, it would help.
So the tunnel actually terminates at the other end of the network.
After I've done some more investigation, I have found that the gw2.bne is
taking the Inter-Area summary route advertised by MLS2 instead of learning
it directly from gw1.bne2:-
At Gw2.bne:-
gw2.bne#sh ip route 203.147.154.136
Routing entry for 203.147.144.0/20, supernet
Known via "ospf 7496", distance 110, metric 3, type inter area
Last update from 202.139.236.254 on FastEthernet0/0, 01:29:27 ago
Routing Descriptor Blocks:
* 202.139.236.254, from 203.147.255.156, 01:29:27 ago, via FastEthernet0/0
wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I agree. Are you terminiating the tunnel on gw1.bne? Or do you have
> another route from gw1.bne2 to gw1.bne? Becuase it looks like gw1.bne is
> learning it's route directly from gw1.bne2. If you could include the
config
> from gw1.bne, it would help.
""Wallace Lee"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hunt,
> I guess you don't have the 203.147.154.0 route in the middle router.
> however, you have a
> defaut route in it. So, you will experience a routing loop. Check you
tunnel
> configuration as well. see the following from u :
>
> I have an OSPF connectivity problem. I have 3 routers as follows:
> >
> > OSPF Area 203.147.188.0 OSPF Area 0
> > Gw1.bne2 ------------------------ Gw2.bne -------------------Gw1.bne
> >
> > Gw1.bne2 is connecting to Gw2.bne with Serial 0/0:0 (203.147.255.186
/30)
> > Gw2.bne is connecting back to Gw1.bne2 with Serial 0/0:0
(203.147.255.185
> > /30)
> >
> > Gw2.bne is also connected to Gw1.bne with FastEth 0/0 (202.139.236.2
/24)
> > Gw1.bne is connecting back to Gw2.bne with FastEth 0/1 (202.139.236.254
> /24)
> >
> > Now I have 5 static routes at Gw1.bne2 (the left most Router) that I
want
> to
> > redistributed into OSPF.
> >
> > ip route 203.147.154.0 255.255.255.128 203.147.188.65
> > ip route 203.147.154.128 255.255.255.248 203.147.188.68
> > ip route 203.147.154.136 255.255.255.248 203.147.188.69
> > ip route 203.147.154.144 255.255.255.252 203.147.188.66
> > ip route 203.147.154.148 255.255.255.252 203.147.188.67
> >
> > controller E1 0/0
> > channel-group 0 timeslots 1-31
> > !
> > !
> > interface Tunnel0
> > description BNE2->Avior
> > ip address 10.255.255.2 255.255.255.252
> > no ip route-cache cef
> > tunnel source 203.147.255.186
> > tunnel destination 203.147.190.4
> > !
> > interface FastEthernet0/0
> > no ip address
> > ip route-cache flow
> > speed 100
> > full-duplex
> > !
> > interface FastEthernet0/0.5
> > encapsulation dot1Q 5
> > !
> > interface FastEthernet0/0.10
> > encapsulation dot1Q 10
> > ip address 10.15.15.254 255.255.255.0 secondary
> > ip address 203.147.188.254 255.255.255.0
> > ip access-group pfilter in
> > ip accounting access-violations
> > ip nbar protocol-discovery
> > !
> > interface FastEthernet0/0.999
> > encapsulation dot1Q 999
> > ip address 10.2.101.1 255.255.0.0
> > !
> > interface Serial0/0:0
> > description N7065870L to 96 Lytton Rd
> > ip address 203.147.255.186 255.255.255.252
> > ip nbar protocol-discovery
> > ip route-cache flow
> > load-interval 30
> > service-policy output voippol
> > !
> > router ospf 7496
> > log-adjacency-changes
> > redistribute connected
> > redistribute static subnets
> > passive-interface FastEthernet0/0.999
> > network 203.147.188.0 0.0.0.255 area 203.147.188.0
> > network 203.147.255.184 0.0.0.3 area 203.147.188.0
> >
> > At Gw1.bne2, it shows the subnets are learned via "statics"
> >
> > gw1.bne2#sh ip route 203.147.154.136
> > Routing entry for 203.147.154.136/29
> > Known via "static", distance 1, metric 0
> > Redistributing via ospf 7496
> > Advertised by ospf 7496 subnets
> > Routing Descriptor Blocks:
> > * 203.147.188.69
> > Route metric is 0, traffic share count is 1
> >
> > When I goto Gw2.bne (middle router), I can see the routes in the OSPF
> > Topology Table (all of them are learned from 203.147.255.186 -
Gw1.bne2),
> > but not the its routing table:-
> >
> > N.B: I also tried to do a clear ip route 203.147.144.0/20, but no help.
> > The same route came straight back
> >
> > Type-5 AS External Link States
> >
> > 203.147.154.0 203.147.255.186 572 0x80000002 0xAC01 0
> > 203.147.154.128 203.147.255.186 573 0x80000002 0xA40D 0
> > 203.147.154.136 203.147.255.186 573 0x80000002 0x6246 0
> > 203.147.154.144 203.147.255.186 573 0x80000002 0xFF9F 0
> > 203.147.154.148 203.147.255.186 573 0x80000002 0xE5B4 0
> >
> > gw2.bne# sh ip route 203.147.154.136
> > Routing entry for 203.147.144.0/20, supernet
> > Known via "ospf 7496", distance 110, metric 3, type inter area
> > Last update from 202.139.236.254 on FastEthernet0/0, 00:17:48 ago
> > Routing Descriptor Blocks:
> > * 202.139.236.254, from 203.147.255.156, 00:17:48 ago, via
> FastEthernet0/0
> > Route metric is 3, traffic share count is 1
> >
> > However, if I goto Gw1.bne (the rightmost router), it can see all 5
subnets
> > in the OSPF Topoloy Table and Routing Table
> >
> > Type-5 AS External Link States
> >
> > 203.147.154.0 203.147.255.186 867 0x80000002 0xAC01 0
> > 203.147.154.128 203.147.255.186 867 0x80000002 0xA40D 0
> > 203.147.154.136 203.147.255.186 867 0x80000002 0x6246 0
> > 203.147.154.144 203.147.255.186 867 0x80000002 0xFF9F 0
> > 203.147.154.148 203.147.255.186 867 0x80000002 0xE5B4 0
> >
> > gw1.bne#sh ip route 203.147.154.136
> > Routing entry for 203.147.154.136/29
> > Known via "ospf 7496", distance 110, metric 20, type extern 2, forward
> > metric 52
> > Redistributing via ospf 7496
> > Last update from 202.139.236.2 on FastEthernet0/1, 00:49:30 ago
> > Routing Descriptor Blocks:
> > * 202.139.236.2, from 203.147.255.186, 00:49:30 ago, via
FastEthernet0/1
> > Route metric is 20, traffic share count is 1
> >
> > As a result, when I do a trace from Gw1.bne (the rightmost router), it
> > points it to Gw2.bne, but Gw2.bne points it back - Routing Loop :(
> >
> > gw1.bne#trace 203.147.154.136
> >
> > Type escape sequence to abort.
> > Tracing the route to 203.147.154.136
> >
> > 1 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 0 msec 4 msec 0 msec
> > 2 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 0
msec
> > 3 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 0 msec 4 msec 4 msec
> > 4 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 4
msec
> > 5 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 4 msec 4 msec
> > 6 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 0
msec
> > 7 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 4 msec 0 msec
> > 8 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 4
msec
> > 9 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 4 msec 4 msec
> > 10 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 4
msec
> > 11 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 4 msec 4 msec
> > 12 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 4
msec
> > 13 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 4 msec 4 msec
> > 14 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 8 msec 4
msec
> > 15 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 8 msec 4 msec
> > 16 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 8
msec
> > 17 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 4 msec 4 msec
> > 18 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 8 msec 8 msec 4
msec
> > 19 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 8 msec 8 msec 4 msec
> > 20 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 8
msec
> > 21 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 12 msec 4 msec 4
msec
> > 22 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 8 msec 8
msec
> > 23 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 8 msec 8 msec 8 msec
> > 24 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 8 msec 8
msec
> > 25 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 8 msec 12
msec
> > 26 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 12 msec 8 msec 8
msec
> > 27 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 8 msec 4 msec 8 msec
> > 28 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 8 msec 8 msec 8
msec
> > 29 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 8 msec 8 msec 8 msec
> > 30 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 8 msec 8 msec 8
msec
> > gw1.bne#
> >
> > Also, I have attached the config for Gw2.bne (Middle Router):-
> >
> > controller E1 0/0
> > channel-group 0 timeslots 1-31
> > !
> > !
> > interface Loopback0
> > description Management
> > ip address 10.1.1.6 255.255.0.0
> > !
> > interface FastEthernet0/0
> > ip address 202.139.236.2 255.255.255.0
> > ip ospf message-digest-key 1 md5 7 0205534119541C14644F
> > speed 100
> > full-duplex
> > random-detect
> > !
> > interface Serial0/0:0
> > description N7065870L to Lvl5 Wickham St
> > ip address 203.147.255.185 255.255.255.252
> > ip nbar protocol-discovery
> > ip route-cache flow
> > service-policy output guaranteed
> > !
> > router ospf 7496
> > log-adjacency-changes
> > area 0 authentication message-digest
> > network 202.139.236.0 0.0.0.255 area 0
> > network 203.147.255.184 0.0.0.3 area 203.147.188.0
> > !
> > ip flow-export source Loopback0
> > ip flow-export version 5
> > ip flow-export destination 203.147.190.7 9992
> > ip classless
> > ip route 0.0.0.0 0.0.0.0 202.139.236.254
> > ip route 203.32.10.0 255.255.255.0 203.147.255.186
> > ip route 203.147.188.0 255.255.255.0 203.147.255.186
> > no ip http server
> >
> > So why would Gw2.bne (the middle router) passed the Redistributed Routes
to
> > Gw1.bne while itself (Gw2.bne) is using the supernet??
> >
> > Thanks a lot
> >
> > Best Regards,
> > Hunt Lee
> Hunt Lee wrote:
>
> > I have an OSPF connectivity problem. I have 3 routers as follows:
> >
> > OSPF Area 203.147.188.0 OSPF Area 0
> > Gw1.bne2 ------------------------ Gw2.bne -------------------Gw1.bne
> >
> > Gw1.bne2 is connecting to Gw2.bne with Serial 0/0:0 (203.147.255.186
/30)
> > Gw2.bne is connecting back to Gw1.bne2 with Serial 0/0:0
(203.147.255.185
> > /30)
> >
> > Gw2.bne is also connected to Gw1.bne with FastEth 0/0 (202.139.236.2
/24)
> > Gw1.bne is connecting back to Gw2.bne with FastEth 0/1 (202.139.236.254
> /24)
> >
> > Now I have 5 static routes at Gw1.bne2 (the left most Router) that I
want
> to
> > redistributed into OSPF.
> >
> > ip route 203.147.154.0 255.255.255.128 203.147.188.65
> > ip route 203.147.154.128 255.255.255.248 203.147.188.68
> > ip route 203.147.154.136 255.255.255.248 203.147.188.69
> > ip route 203.147.154.144 255.255.255.252 203.147.188.66
> > ip route 203.147.154.148 255.255.255.252 203.147.188.67
> >
> > controller E1 0/0
> > channel-group 0 timeslots 1-31
> > !
> > !
> > interface Tunnel0
> > description BNE2->Avior
> > ip address 10.255.255.2 255.255.255.252
> > no ip route-cache cef
> > tunnel source 203.147.255.186
> > tunnel destination 203.147.190.4
> > !
> > interface FastEthernet0/0
> > no ip address
> > ip route-cache flow
> > speed 100
> > full-duplex
> > !
> > interface FastEthernet0/0.5
> > encapsulation dot1Q 5
> > !
> > interface FastEthernet0/0.10
> > encapsulation dot1Q 10
> > ip address 10.15.15.254 255.255.255.0 secondary
> > ip address 203.147.188.254 255.255.255.0
> > ip access-group pfilter in
> > ip accounting access-violations
> > ip nbar protocol-discovery
> > !
> > interface FastEthernet0/0.999
> > encapsulation dot1Q 999
> > ip address 10.2.101.1 255.255.0.0
> > !
> > interface Serial0/0:0
> > description N7065870L to 96 Lytton Rd
> > ip address 203.147.255.186 255.255.255.252
> > ip nbar protocol-discovery
> > ip route-cache flow
> > load-interval 30
> > service-policy output voippol
> > !
> > router ospf 7496
> > log-adjacency-changes
> > redistribute connected
> > redistribute static subnets
> > passive-interface FastEthernet0/0.999
> > network 203.147.188.0 0.0.0.255 area 203.147.188.0
> > network 203.147.255.184 0.0.0.3 area 203.147.188.0
> >
> > At Gw1.bne2, it shows the subnets are learned via "statics"
> >
> > gw1.bne2#sh ip route 203.147.154.136
> > Routing entry for 203.147.154.136/29
> > Known via "static", distance 1, metric 0
> > Redistributing via ospf 7496
> > Advertised by ospf 7496 subnets
> > Routing Descriptor Blocks:
> > * 203.147.188.69
> > Route metric is 0, traffic share count is 1
> >
> > When I goto Gw2.bne (middle router), I can see the routes in the OSPF
> > Topology Table (all of them are learned from 203.147.255.186 -
Gw1.bne2),
> > but not the its routing table:-
> >
> > N.B: I also tried to do a clear ip route 203.147.144.0/20, but no help.
> > The same route came straight back
> >
> > Type-5 AS External Link States
> >
> > 203.147.154.0 203.147.255.186 572 0x80000002 0xAC01 0
> > 203.147.154.128 203.147.255.186 573 0x80000002 0xA40D 0
> > 203.147.154.136 203.147.255.186 573 0x80000002 0x6246 0
> > 203.147.154.144 203.147.255.186 573 0x80000002 0xFF9F 0
> > 203.147.154.148 203.147.255.186 573 0x80000002 0xE5B4 0
> >
> > gw2.bne# sh ip route 203.147.154.136
> > Routing entry for 203.147.144.0/20, supernet
> > Known via "ospf 7496", distance 110, metric 3, type inter area
> > Last update from 202.139.236.254 on FastEthernet0/0, 00:17:48 ago
> > Routing Descriptor Blocks:
> > * 202.139.236.254, from 203.147.255.156, 00:17:48 ago, via
> FastEthernet0/0
> > Route metric is 3, traffic share count is 1
> >
> > However, if I goto Gw1.bne (the rightmost router), it can see all 5
subnets
> > in the OSPF Topoloy Table and Routing Table
> >
> > Type-5 AS External Link States
> >
> > 203.147.154.0 203.147.255.186 867 0x80000002 0xAC01 0
> > 203.147.154.128 203.147.255.186 867 0x80000002 0xA40D 0
> > 203.147.154.136 203.147.255.186 867 0x80000002 0x6246 0
> > 203.147.154.144 203.147.255.186 867 0x80000002 0xFF9F 0
> > 203.147.154.148 203.147.255.186 867 0x80000002 0xE5B4 0
> >
> > gw1.bne#sh ip route 203.147.154.136
> > Routing entry for 203.147.154.136/29
> > Known via "ospf 7496", distance 110, metric 20, type extern 2, forward
> > metric 52
> > Redistributing via ospf 7496
> > Last update from 202.139.236.2 on FastEthernet0/1, 00:49:30 ago
> > Routing Descriptor Blocks:
> > * 202.139.236.2, from 203.147.255.186, 00:49:30 ago, via
FastEthernet0/1
> > Route metric is 20, traffic share count is 1
> >
> > As a result, when I do a trace from Gw1.bne (the rightmost router), it
> > points it to Gw2.bne, but Gw2.bne points it back - Routing Loop :(
> >
> > gw1.bne#trace 203.147.154.136
> >
> > Type escape sequence to abort.
> > Tracing the route to 203.147.154.136
> >
> > 1 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 0 msec 4 msec 0 msec
> > 2 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 0
msec
> > 3 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 0 msec 4 msec 4 msec
> > 4 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 4
msec
> > 5 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 4 msec 4 msec
> > 6 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 0
msec
> > 7 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 4 msec 0 msec
> > 8 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 4
msec
> > 9 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 4 msec 4 msec
> > 10 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 4
msec
> > 11 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 4 msec 4 msec
> > 12 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 4
msec
> > 13 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 4 msec 4 msec
> > 14 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 8 msec 4
msec
> > 15 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 8 msec 4 msec
> > 16 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 8
msec
> > 17 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 4 msec 4 msec
> > 18 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 8 msec 8 msec 4
msec
> > 19 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 8 msec 8 msec 4 msec
> > 20 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 4 msec 8
msec
> > 21 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 12 msec 4 msec 4
msec
> > 22 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 8 msec 8
msec
> > 23 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 8 msec 8 msec 8 msec
> > 24 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 4 msec 8 msec 8
msec
> > 25 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 4 msec 8 msec 12
msec
> > 26 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 12 msec 8 msec 8
msec
> > 27 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 8 msec 4 msec 8 msec
> > 28 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 8 msec 8 msec 8
msec
> > 29 fa0-0.gw2.bne.webcentral.com.au (202.139.236.2) 8 msec 8 msec 8 msec
> > 30 fa0-1.gw1.bne.webcentral.com.au (202.139.236.254) 8 msec 8 msec 8
msec
> > gw1.bne#
> >
> > Also, I have attached the config for Gw2.bne (Middle Router):-
> >
> > controller E1 0/0
> > channel-group 0 timeslots 1-31
> > !
> > !
> > interface Loopback0
> > description Management
> > ip address 10.1.1.6 255.255.0.0
> > !
> > interface FastEthernet0/0
> > ip address 202.139.236.2 255.255.255.0
> > ip ospf message-digest-key 1 md5 7 0205534119541C14644F
> > speed 100
> > full-duplex
> > random-detect
> > !
> > interface Serial0/0:0
> > description N7065870L to Lvl5 Wickham St
> > ip address 203.147.255.185 255.255.255.252
> > ip nbar protocol-discovery
> > ip route-cache flow
> > service-policy output guaranteed
> > !
> > router ospf 7496
> > log-adjacency-changes
> > area 0 authentication message-digest
> > network 202.139.236.0 0.0.0.255 area 0
> > network 203.147.255.184 0.0.0.3 area 203.147.188.0
> > !
> > ip flow-export source Loopback0
> > ip flow-export version 5
> > ip flow-export destination 203.147.190.7 9992
> > ip classless
> > ip route 0.0.0.0 0.0.0.0 202.139.236.254
> > ip route 203.32.10.0 255.255.255.0 203.147.255.186
> > ip route 203.147.188.0 255.255.255.0 203.147.255.186
> > no ip http server
> >
> > So why would Gw2.bne (the middle router) passed the Redistributed Routes
to
> > Gw1.bne while itself (Gw2.bne) is using the supernet??
> >
> > Thanks a lot
> >
> > Best Regards,
> > Hunt Lee
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=42639&t=42411
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