Here's my attempt at an answer:
Most of this data could be pulled through IPCP
Put this on RA S0/0
ppp ipcp dns 172.16.1.250 172.16.2.251
ppp ipcp wins 172.16.1.18
And add this onto RB S0/0
ppp ipcp dns request accept
ppp ipcp wins request
ppp ipcp route default
However where it seems to fall down though is that netbios type and lease
duration information needs to be propogated as well, which suggests the need
for DHCP rather than IPCP which may mean we need to look at bridging over
PPP using BCP.
So lets change RB to support bridging
bridge irb
bridge 1 protocol ieee
bridge 1 route ip
interface Serial0/1
no ip address
encapsulation ppp
no fair-queue
serial restart-delay 0
ppp bridge ip
bridge-group 1
!
interface BVI1
ip address dhcp
!
On RA if we just move the IP addresses from S0/1 to BVI1 we would end up
using "pool 1" (which has all the IP addresses in that
172.16.18.0/24network blocked and doesn't have any of the parameters
we are expected to
pass over) so we will use the same IP addresses from S0/1 for BVI1 but
change the netmask to be /16 so we are now using pool 0
bridge irb
bridge 1 protocol ieee
bridge 1 route ip
interface Serial0/1
no ip address
encapsulation ppp
no peer default ip address
no fair-queue
serial restart-delay 0
ppp bridge ip
bridge-group 1
!
interface BVI1
ip address 172.16.18.252 255.255.0.0 secondary
ip address 172.16.18.253 255.255.0.0
!
Verify on RB
debug ppp neg
debug dhcp detail
*Mar 1 01:49:34.463: %LINK-3-UPDOWN: Interface Serial0/1, changed state to
up
*Mar 1 01:49:34.463: Se0/1 PPP: Using default call direction
*Mar 1 01:49:34.463: Se0/1 PPP: Treating connection as a dedicated line
*Mar 1 01:49:34.463: Se0/1 PPP: Session handle[B7000014] Session id[22]
*Mar 1 01:49:34.463: Se0/1 PPP: Phase is ESTABLISHING, Active Open
*Mar 1 01:49:34.463: Se0/1 LCP: O CONFREQ [Closed] id 31 len 10
*Mar 1 01:49:34.467: Se0/1 LCP: MagicNumber 0x006BA6BC (0x0506006BA6BC)
*Mar 1 01:49:34.483: Se0/1 LCP: I CONFREQ [REQsent] id 33 len 10
*Mar 1 01:49:34.483: Se0/1 LCP: MagicNumber 0x016BA59F (0x0506016BA59F)
*Mar 1 01:49:34.483: Se0/1 LCP: O CONFACK [REQsent] id 33 len 10
*Mar 1 01:49:34.483: Se0/1 LCP: MagicNumber 0x016BA59F (0x0506016BA59F)
*Mar 1 01:49:34.483: Se0/1 LCP: I CONFACK [ACKsent] id 31 len 10
*Mar 1 01:49:34.487: Se0/1 LCP: MagicNumber 0x006BA6BC (0x0506006BA6BC)
*Mar 1 01:49:34.487: Se0/1 LCP: State is Open
*Mar 1 01:49:34.487: Se0/1 PPP: Phase is FORWARDING, Attempting Forward
*Mar 1 01:49:34.487: Se0/1 PPP: Queue BCP code[1] id[1]
*Mar 1 01:49:34.487: Se0/1 PPP: Discarded CDPCP code[1] id[1]
*Mar 1 01:49:34.487: Se0/1 PPP: Phase is ESTABLISHING, Finish LCP
*Mar 1 01:49:34.491: Se0/1 PPP: Phase is UP
*Mar 1 01:49:34.491: Se0/1 BCP: O CONFREQ [Closed] id 1 len 11
*Mar 1 01:49:34.491: Se0/1 BCP: IEEE802TaggedFrame enabled (0x080301)
*Mar 1 01:49:34.491: Se0/1 BCP: ManagementInline (0x0902)
*Mar 1 01:49:34.491: Se0/1 BCP: BridgeControlPacketIndicator (0x0A02)
*Mar 1 01:49:34.491: Se0/1 PPP: Process pending ncp packets
*Mar 1 01:49:34.491: Se0/1 BCP: Redirect packet to Se0/1
*Mar 1 01:49:34.491: Se0/1 BCP: I CONFREQ [REQsent] id 1 len 11
*Mar 1 01:49:34.491: Se0/1 BCP: IEEE802TaggedFrame enabled (0x080301)
*Mar 1 01:49:34.491: Se0/1 BCP: ManagementInline (0x0902)
*Mar 1 01:49:34.491: Se0/1 BCP: BridgeControlPacketIndicator (0x0A02)
*Mar 1 01:49:34.491: Se0/1 BCP: O CONFACK [REQsent] id 1 len 11
*Mar 1 01:49:34.491: Se0/1 BCP: IEEE802TaggedFrame enabled (0x080301)
*Mar 1 01:49:34.491: Se0/1 BCP: ManagementInline (0x0902)
*Mar 1 01:49:34.491: Se0/1 BCP: BridgeControlPacketIndicator (0x0A02)
*Mar 1 01:49:34.491: Se0/1 BCP: I CONFACK [ACKsent] id 1 len 11
*Mar 1 01:49:34.491: Se0/1 BCP: IEEE802TaggedFrame enabled (0x080301)
*Mar 1 01:49:34.491: Se0/1 BCP: ManagementInline (0x0902)
*Mar 1 01:49:34.491: Se0/1 BCP: BridgeControlPacketIndicator (0x0A02)
*Mar 1 01:49:34.491: Se0/1 BCP: State is Open
*Mar 1 01:49:34.491: Se0/1 BCP: Reached the OPEN state
*Mar 1 01:49:34.491: Se0/1 BCP: go->neg_tagged
*Mar 1 01:49:34.491: Se0/1 BCP: tagged state = 1
*Mar 1 01:49:34.491: Se0/1 BCP: ho->neg_tagged
*Mar 1 01:49:34.491: Se0/1 BCP: tagged state = 1
*Mar 1 01:49:34.491: Se0/1 BCP: go->neg_mgmt_inline
*Mar 1 01:49:34.491: Se0/1 BCP: ho->neg_mgmt_inline
*Mar 1 01:49:34.491: Se0/1 BCP: go->neg_bpdu_indicator
*Mar 1 01:49:34.491: Se0/1 BCP: ho->neg_bpdu_indicator
*Mar 1 01:50:21.287: DHCP: new entry. add to queue, interface BVI1
*Mar 1 01:50:21.287: DHCP: SDiscover attempt # 1 for entry:
*Mar 1 01:50:21.287: Temp IP addr: 0.0.0.0 for peer on Interface: BVI1
*Mar 1 01:50:21.287: Temp sub net mask: 0.0.0.0
*Mar 1 01:50:21.287: DHCP Lease server: 0.0.0.0, state: 3 Selecting
*Mar 1 01:50:21.287: DHCP transaction id: 1EFC
*Mar 1 01:50:21.287: Lease: 0 secs, Renewal: 0 secs, Rebind: 0 secs
*Mar 1 01:50:21.287: Next timer fires after: 00:00:04
*Mar 1 01:50:21.287: Retry count: 1 Client-ID:
cisco-0000.0ceb.1b90-BV1
*Mar 1 01:50:21.287: Client-ID hex dump:
636973636F2D303030302E306365622E
*Mar 1 01:50:21.287: 316239302D425631
*Mar 1 01:50:21.291: Hostname: RB
*Mar 1 01:50:21.291: DHCP: SDiscover: sending 289 byte length DHCP packet
*Mar 1 01:50:21.291: DHCP: SDiscover 289 bytes
*Mar 1 01:50:21.291: B'cast on BVI1 interface from 0.0.0.0
*Mar 1 01:50:21.311: DHCP: Received a BOOTREP pkt
*Mar 1 01:50:21.311: DHCP: Scan: Message type: DHCP Offer
*Mar 1 01:50:21.311: DHCP: Scan: Server ID Option: 172.16.18.253 = AC1012FD
*Mar 1 01:50:21.311: DHCP: Scan: Lease Time: 2590802
*Mar 1 01:50:21.311: DHCP: Scan: Renewal time: 1295401
*Mar 1 01:50:21.311: DHCP: Scan: Rebind time: 2266951
*Mar 1 01:50:21.311: DHCP: Scan: Subnet Address Option: 255.255.0.0
*Mar 1 01:50:21.311: DHCP: Scan: Domain Name: packetsanalyzed.com
*Mar 1 01:50:21.311: DHCP: Scan: DNS Name Server Option: 172.16.1.250,
172.16.2.251
*Mar 1 01:50:21.311: DHCP: Scan: NBNS Name Server Option: 172.16.1.18
*Mar 1 01:50:21.311: DHCP: Scan: Router Option: 172.16.18.252,
172.16.18.253
*Mar 1 01:50:21.311: DHCP: rcvd pkt source: 172.16.18.253, destination:
255.255.255.255
*Mar 1 01:50:21.311: UDP sport: 43, dport: 44, length: 329
*Mar 1 01:50:21.311: DHCP op: 2, htype: 1, hlen: 6, hops: 0
*Mar 1 01:50:21.311: DHCP server identifier: 172.16.18.253
*Mar 1 01:50:21.311: xid: 1EFC, secs: 0, flags: 8000
*Mar 1 01:50:21.311: client: 0.0.0.0, your: 172.16.0.15
*Mar 1 01:50:21.311: srvr: 0.0.0.0, gw: 0.0.0.0
*Mar 1 01:50:21.311: options block length: 81
*Mar 1 01:50:21.311: DHCP Offer Message Offered Address: 172.16.0.15
*Mar 1 01:50:21.311: DHCP: Lease Seconds: 2590802 Renewal secs:
1295401 Rebind secs: 2266951
*Mar 1 01:50:21.311: DHCP: Server ID Option: 172.16.18.253
*Mar 1 01:50:21.311: DHCP: offer received from 172.16.18.253
*Mar 1 01:50:21.315: DHCP: SRequest attempt # 1 for entry:
*Mar 1 01:50:21.315: Temp IP addr: 172.16.0.15 for peer on Interface: BVI1
*Mar 1 01:50:21.315: Temp sub net mask: 255.255.0.0
*Mar 1 01:50:21.315: DHCP Lease server: 172.16.18.253, state: 4
Requesting
*Mar 1 01:50:21.315: DHCP transaction id: 1EFC
*Mar 1 01:50:21.315: Lease: 2590802 secs, Renewal: 0 secs, Rebind: 0
secs
*Mar 1 01:50:21.315: Next timer fires after: 00:00:03
*Mar 1 01:50:21.315: Retry count: 1 Client-ID:
cisco-0000.0ceb.1b90-BV1
*Mar 1 01:50:21.315: Client-ID hex dump:
636973636F2D303030302E306365622E
*Mar 1 01:50:21.315: 316239302D425631
*Mar 1 01:50:21.315: Hostname: RB
*Mar 1 01:50:21.315: DHCP: SRequest- Server ID option: 172.16.18.253
*Mar 1 01:50:21.315: DHCP: SRequest- Requested IP addr option: 172.16.0.15
*Mar 1 01:50:21.315: DHCP: SRequest placed lease len option: 2590802
*Mar 1 01:50:21.315: DHCP: SRequest: 307 bytes
*Mar 1 01:50:21.315: DHCP: SRequest: 307 bytes
*Mar 1 01:50:21.315: B'cast on BVI1 interface from 0.0.0.0
*Mar 1 01:50:21.319: DHCP: Received a BOOTREP pkt
*Mar 1 01:50:21.319: DHCP: Scan: Message type: DHCP Ack
*Mar 1 01:50:21.319: DHCP: Scan: Server ID Option: 172.16.18.253 = AC1012FD
*Mar 1 01:50:21.319: DHCP: Scan: Lease Time: 2592000
*Mar 1 01:50:21.319: DHCP: Scan: Renewal time: 1296000
*Mar 1 01:50:21.319: DHCP: Scan: Rebind time: 2268000
*Mar 1 01:50:21.319: DHCP: Scan: Subnet Address Option: 255.255.0.0
*Mar 1 01:50:21.319: DHCP: Scan: Domain Name: packetsanalyzed.com
*Mar 1 01:50:21.319: DHCP: Scan: DNS Name Server Option: 172.16.1.250,
172.16.2.251
*Mar 1 01:50:21.319: DHCP: Scan: NBNS Name Server Option: 172.16.1.18
*Mar 1 01:50:21.319: DHCP: Scan: Router Option: 172.16.18.252,
172.16.18.253
*Mar 1 01:50:21.319: DHCP: rcvd pkt source: 172.16.18.253, destination:
255.255.255.255
*Mar 1 01:50:21.319: UDP sport: 43, dport: 44, length: 329
*Mar 1 01:50:21.319: DHCP op: 2, htype: 1, hlen: 6, hops: 0
*Mar 1 01:50:21.319: DHCP server identifier: 172.16.18.253
*Mar 1 01:50:21.319: xid: 1EFC, secs: 0, flags: 8000
*Mar 1 01:50:21.319: client: 0.0.0.0, your: 172.16.0.15
*Mar 1 01:50:21.319: srvr: 0.0.0.0, gw: 0.0.0.0
*Mar 1 01:50:21.319: options block length: 81
*Mar 1 01:50:21.319: DHCP Ack Message
*Mar 1 01:50:21.319: DHCP: Lease Seconds: 2592000 Renewal secs:
1296000 Rebind secs: 2268000
*Mar 1 01:50:21.319: DHCP: Server ID Option: 172.16.18.253
*Mar 1 01:50:24.343: DHCP: Releasing ipl options:
*Mar 1 01:50:24.347: DHCP: Applying DHCP options:
*Mar 1 01:50:24.347: Setting default_gateway to 172.16.18.252
*Mar 1 01:50:24.351: Adding default route 172.16.18.252
*Mar 1 01:50:25.351: Adding DNS server address 172.16.1.250
*Mar 1 01:50:25.351: Adding DNS server address 172.16.2.251
*Mar 1 01:50:25.351: Setting default domain to packetsanalyzed.com
*Mar 1 01:50:25.355: DHCP Client Pooling: ***Allocated IP address:
172.16.0.15
*Mar 1 01:50:25.395: Allocated IP address = 172.16.0.15 255.255.0.0
*Mar 1 01:50:25.399: %DHCP-6-ADDRESS_ASSIGN: Interface BVI1 assigned DHCP
address 172.16.0.15, mask 255.255.0.0, hostname RB
RB#sh ip route
Codes: C - connected, S - static, 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
i - IS-IS, su - IS-IS summary, 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 172.16.18.252 to network 0.0.0.0
C 172.16.0.0/16 is directly connected, BVI1
S* 0.0.0.0/0 [254/0] via 172.16.18.252
RB#ping 172.16.18.252
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.18.252, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/4/8 ms
Cheers,
Adam
On Wed, Oct 20, 2010 at 9:14 AM, Di Bias, Steve <[email protected]>wrote:
> What are the restrictions?
>
>
> ------------------------------
>
> *From:* [email protected] [mailto:
> [email protected]] *On Behalf Of *Jason Maynard
> *Sent:* Tuesday, October 19, 2010 3:50 PM
> *To:* [email protected]
> *Subject:* [OSL | CCIE_RS] Troubleshooting #2
>
>
>
> Since the first one seem to create some good dialog I thought I would try
> it again
>
>
>
> RB should have a *default route* to serial 1/0 (172.16.18.252) on RA.
> Domain name, DNS, netbios, netbios type, and lease is required. Lab it up if
> required.
>
>
>
>
>
> The configuration can be found here
>
> http://packetsanalyzed.blogspot.com/2010/10/troubleshooting-2.html
>
>
>
>
>
>
>
> UHS Confidentiality Notice: This e-mail message, including any attachments,
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>
>
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