Konfigurieren einer Cisco 6400 ATM-Schnittstelle mit RBE und DHCP

Current configuration: 
! 
version 12.0 
service timestamps debug datetime msec 
service timestamps log datetime msec 
! 
hostname R1
!
ip subnet-zero 
!
bridge irb 
! 
interface Ethernet0 
 no ip address
 bridge-group 1

!--- Because the Ethernet0 is bridged to the WAN interface, !--- PCs behind the ethernet0 can be setup as DHCP clients. !--- They get their addresses from the DHCP server behind the 6400, !--- or from the IOS DHCP server on the 6400.

! 
interface ATM0 
 no ip address 
 no ip directed-broadcast 
 no ip mroute-cache 
 no atm ilmi-keepalive 
 pvc 4/100 
  encapsulation aal5snap 
 ! 
 bundle-enable 
 bridge-group 1 
 hold-queue 224 in 
! 
interface BVI1 
 ip address dhcp client-id Ethernet0

!--- This command tells the BVI interface to get the address !--- from DHCP, and also to get the default route from DHCP.

! 
ip classless 

!--- Note: The default route will be inserted into !--- the routing table automatically from the DHCP server, and !--- no static routing statement is required. 

no ip http server 
! 
bridge 1 protocol ieee 
 bridge 1 route ip 
! 
voice-port 1 
 timing hookflash-in 0 
! 
voice-port 2 
 timing hookflash-in 0 
! 
voice-port 3 
 timing hookflash-in 0 
! 
voice-port 4 
 timing hookflash-in 0 
!
end 

Current configuration: 
! 
version 12.1
no service pad 
service timestamps debug datetime msec 
service timestamps log datetime msec 
! 
hostname NRP 

! 
redundancy 
 main-cpu 
 no auto-sync standard 
 no secondary console enable 
ip subnet-zero 
! 
interface Loopback1 
 ip address 198.1.1.1 255.255.255.0 
 no ip directed-broadcast

!--- This address and mask must match the intended !--- scope and network configured on the external DHCP server.

! 
interface ATM0/0/0 
 no ip address 
 no ip directed-broadcast 
 no ip mroute-cache 
 no ATM ilmi-keepalive 
! 
interface ATM0/0/0.4 point-to-point

!--- The interface ATM0/0/0.4 point-to-point uses IP !--- unnumbered Loopback1 for its IP address requirements.

 ip unnumbered Loopback1 
 ip helper-address <dhcp server ip address>
 atm route-bridged ip 
 PVC 4/100 
  encapsulation aal5snap 
 ! 
interface Ethernet0/0/1 
 no ip address 
 no ip directed-broadcast 
! 
interface Ethernet0/0/0 
 no ip directed-broadcast 
! 
interface FastEthernet0/0/0 
 no ip address 
 no ip directed-broadcast 
 full-duplex 
! 
ip classless 

!--- Note: For every DHCP client that is relayed an address, !--- a host route will be automatically inserted in the routing !--- table, and no host route statement for a DHCP client is required.

end 

debug ip dhcp server events 

Looks for existing binding. . .

00:10:56:  find_or_create(): Look for existing binding for:
00:10:56:  find_or_create(): dhcp->chaddr = 616EF9BC
00:10:56:  find_or_create(): dhcp->hlen = 6
00:10:56:  find_or_create(): dhcp->htype = 1
00:10:56:  find_or_create: address = 124.124.124.1
00:10:56:  find_or_create(): Creating new binding with data
00:10:56:  find_or_create(): dhcp->chaddr = 616EF9BC
00:10:56:  find_or_create(): dhcp->hlen = 6
00:10:56:  find_or_create(): dhcp->htype = 1
00:10:56:  find_or_create: address = 124.124.124.1

!--- Forwards DHCP DISCOVER packet from the client to the !--- external DHCP server.

00:10:56: DHCPD: Received DHCPDISCOVER on UNNUM-IF
00:10:56: DHCPD: Forwarding reply on un-numbered intf

!--- Forwards the DHCP OFFER packet from the external DHCP server !--- to the client.

00:10:56: DHCPD: Unnum: Received DHCPOFFER
00:10:56:  DHCPD: Server Address = 200.200.200.2
00:10:56:  DHCPD: Giaddr Address = 124.124.124.1
00:10:56:  find_or_create(): Look for existing binding for:
00:10:56:  find_or_create(): dhcp->chaddr = 616EF9BC
00:10:56:  find_or_create(): dhcp->hlen = 6
00:10:56:  find_or_create(): dhcp->htype = 1
00:10:56:  find_or_create: address = 124.124.124.1

!--- Forwards the DHCP REQUEST packet from the client to the external !--- DHCP server.

00:10:56: DHCPD: Received DHCPREQUEST on UNNUM-IF
00:10:56:  DHCPD: request_on_unnumif ():Real Server = 200.200.200.2   
00:10:56: DHCPD: Forwarding reply on un-numbered intf

!--- Forwards the DHCP ACK packet from the DHCP server to the client.

00:10:56: DHCPD: Unnum: Received DHCPACK
00:10:56:  DHCPD: lease time = 86400

!--- Adds a dynamic host route to the client into the routing table.

00:10:56: DHCPD: dhcpd_lookup_route: host = 124.124.124.2
00:10:56: DHCPD: dhcpd_lookup_route: index = 126
00:10:56:  DHCPD: Adding new route to host 124.124.124.2
00:10:56: DHCPD: dhcpd_lookup_route: host = 124.124.124.2
00:10:56: DHCPD: dhcpd_lookup_route: index = 126
00:10:56: DHCPD: dhcpd_create_and_hash_route: host = 124.124.124.2
00:10:56: DHCPD: dhcpd_create_and_hash_route index = 126
00:10:56: DHCPD: dhcpd_add_route: lease = 86400 
00:10:56:  DHCPD: Server ID saved in Binding = 200.200.200.2
00:10:56:  DHCPD: Server ID saved in Route block = 200.200.200.2
00:10:56:  DHCPD: Giaddr Address = 124.124.124.1

debug ip dhcp server events 

Assigns an address to the client from the IOS DHCP server.

23:19:09: DHCPD: assigned IP address 124.124.124.3 to 
client 0063.6973.636f.2d30.3030.302e.3063.3036.2e32.3339.342d.4256.31.
23:19:10:  DHCPD: lease time = 86400

Adds a dynamic host route to the client into the routing table.

23:19:10: DHCPD: dhcpd_lookup_route: host = 124.124.124.3
23:19:10: DHCPD: dhcpd_lookup_route: index = 127
23:19:10:  DHCPD: Adding new route to host 124.124.124.3
23:19:10: DHCPD: dhcpd_lookup_route: host = 124.124.124.3
23:19:10: DHCPD: dhcpd_lookup_route: index = 127
23:19:10: DHCPD: dhcpd_create_and_hash_route: host = 124.124.124.3
23:19:10: DHCPD: dhcpd_create_and_hash_route index = 127
23:19:10: DHCPD: dhcpd_add_route: lease = 86400