Configuring and Investigating Basic EIGRP

BR1# sh ip int brief
Interface              IP-Address      OK? Method Status                Protocol
Serial0/0              172.16.1.2      YES NVRAM  up                    up
Serial0/1              unassigned      YES NVRAM  administratively down down
Serial0/2              unassigned      YES NVRAM  administratively down down
Serial0/3              unassigned      YES NVRAM  administratively down down
Loopback0              192.168.1.1     YES NVRAM  up                    up

router eigrp 100
 network 172.16.1.0 0.0.0.3
 network 192.168.1.0

BR1#sh ip eigrp interfaces
EIGRP-IPv4 Interfaces for AS(100)
                              Xmit Queue   PeerQ        Mean   Pacing Time   Multicast    Pending
Interface              Peers  Un/Reliable  Un/Reliable  SRTT   Un/Reliable   Flow Timer   Routes
Se0/0                    1        0/0       0/0          17       0/16          92           0
Lo0                      0        0/0       0/0           0       0/0            0           0

BR1#sh ip eigrp neighbors
EIGRP-IPv4 Neighbors for AS(100)
H   Address                 Interface              Hold Uptime   SRTT   RTO  Q  Seq
                                                   (sec)         (ms)       Cnt Num
0   172.16.1.1              Se0/0                    12 00:02:35   17   102  0  3

BR1#show ip eigrp interfaces detail
EIGRP-IPv4 Interfaces for AS(100)
                              Xmit Queue   PeerQ        Mean   Pacing Time   Multicast    Pending
Interface              Peers  Un/Reliable  Un/Reliable  SRTT   Un/Reliable   Flow Timer   Routes
Se0/0                    1        0/0       0/0          13       0/16          72           0
  Hello-interval is 5, Hold-time is 15
  Split-horizon is enabled
  Next xmit serial
  Packetized sent/expedited: 7/1
  Hello's sent/expedited: 140/2
  Un/reliable mcasts: 0/0  Un/reliable ucasts: 6/7
  Mcast exceptions: 0  CR packets: 0  ACKs suppressed: 0
  Retransmissions sent: 0  Out-of-sequence rcvd: 0
  Topology-ids on interface - 0
  Authentication mode is not set
Lo0                      0        0/0       0/0           0       0/0            0           0
  Hello-interval is 5, Hold-time is 15
  Split-horizon is enabled
  Next xmit serial
  Packetized sent/expedited: 0/0
  Hello's sent/expedited: 0/1
  Un/reliable mcasts: 0/0  Un/reliable ucasts: 0/0
  Mcast exceptions: 0  CR packets: 0  ACKs suppressed: 0
  Retransmissions sent: 0  Out-of-sequence rcvd: 0
  Topology-ids on interface - 0
  Authentication mode is not set

xxxxxxxxxxxxxxxxxxxxxxxxxxx

BR2#sh ip int brief
Interface              IP-Address      OK? Method Status                Protocol
Ethernet0/0            172.16.2.2      YES NVRAM  up                    up
Ethernet0/1            unassigned      YES NVRAM  administratively down down
Ethernet0/2            unassigned      YES NVRAM  administratively down down
Ethernet0/3            unassigned      YES NVRAM  administratively down down
Loopback0              192.168.2.1     YES NVRAM  up                    up

router eigrp 100
 network 172.16.2.0 0.0.0.3
 network 192.168.2.0

BR2#sh ip eigrp interfaces
EIGRP-IPv4 Interfaces for AS(10)
                              Xmit Queue   PeerQ        Mean   Pacing Time   Multicast    Pending
Interface              Peers  Un/Reliable  Un/Reliable  SRTT   Un/Reliable   Flow Timer   Routes
EIGRP-IPv4 Interfaces for AS(100)
                              Xmit Queue   PeerQ        Mean   Pacing Time   Multicast    Pending
Interface              Peers  Un/Reliable  Un/Reliable  SRTT   Un/Reliable   Flow Timer   Routes
Et0/0                    1        0/0       0/0        1279       0/2         6388           0
Lo0                      0        0/0       0/0           0       0/0            0           0

BR2#sh ip eigrp neighbors
EIGRP-IPv4 Neighbors for AS(10)
EIGRP-IPv4 Neighbors for AS(100)
H   Address                 Interface              Hold Uptime   SRTT   RTO  Q  Seq
                                                   (sec)         (ms)       Cnt Num
0   172.16.2.1              Et0/0                    12 00:01:10 1279  5000  0  6

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

BR3#sh ip int brief
Interface              IP-Address      OK? Method Status                Protocol
Serial0/0              172.16.3.2      YES NVRAM  up                    up
Serial0/1              unassigned      YES NVRAM  administratively down down
Serial0/2              unassigned      YES NVRAM  administratively down down
Serial0/3              unassigned      YES NVRAM  administratively down down
Loopback0              192.168.3.1     YES NVRAM  up                    up

router eigrp 100
 network 0.0.0.0
 eigrp router-id 192.168.3.1

BR3#sh ip eigrp interfaces
EIGRP-IPv4 Interfaces for AS(100)
                              Xmit Queue   PeerQ        Mean   Pacing Time   Multicast    Pending
Interface              Peers  Un/Reliable  Un/Reliable  SRTT   Un/Reliable   Flow Timer   Routes
Se0/0                    1        0/0       0/0        1274       0/16        6364           0
Lo0                      0        0/0       0/0           0       0/0            0           0

BR3#sh ip eigrp neighbor
EIGRP-IPv4 Neighbors for AS(100)
H   Address                 Interface              Hold Uptime   SRTT   RTO  Q  Seq
                                                   (sec)         (ms)       Cnt Num
0   172.16.3.1              Se0/0                   129 00:00:52 1274  5000  0  12


xxxxxxxxxxxxxxxx

HQ#sh ip int brief
Interface              IP-Address      OK? Method Status                Protocol
Ethernet0/0            172.16.2.1      YES NVRAM  up                    up
Ethernet0/1            unassigned      YES NVRAM  administratively down down
Ethernet0/2            unassigned      YES NVRAM  administratively down down
Ethernet0/3            unassigned      YES NVRAM  administratively down down
Serial1/0              172.16.1.1      YES NVRAM  up                    up
Serial1/1              unassigned      YES NVRAM  administratively down down
Serial1/2              unassigned      YES NVRAM  administratively down down
Serial1/3              unassigned      YES NVRAM  administratively down down
Serial2/0              172.16.3.1      YES NVRAM  up                    up
Serial2/1              unassigned      YES NVRAM  administratively down down
Serial2/2              unassigned      YES NVRAM  administratively down down
Serial2/3              unassigned      YES NVRAM  administratively down down
Loopback0              192.168.0.1     YES NVRAM  up                    up
HQ# sh ip protocols
*** IP Routing is NSF aware ***

Routing Protocol is "eigrp 100"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  Default networks flagged in outgoing updates
  Default networks accepted from incoming updates
  EIGRP-IPv4 Protocol for AS(100)
    Metric weight K1=1, K2=0, K3=1, K4=0, K5=0
    NSF-aware route hold timer is 240
    Router-ID: 192.168.0.1
    Topology : 0 (base)
      Active Timer: 3 min
      Distance: internal 90 external 170
      Maximum path: 4
      Maximum hopcount 100
      Maximum metric variance 1

  Automatic Summarization: disabled
  Maximum path: 4
  Routing for Networks:
    0.0.0.0
  Routing Information Sources:
    Gateway         Distance      Last Update
    172.16.2.2            90      00:02:57
    172.16.3.2            90      00:02:57
    172.16.1.2            90      00:02:57
  Distance: internal 90 external 170

HQ#show ip eigrp interfaces
EIGRP-IPv4 Interfaces for AS(100)
                              Xmit Queue   PeerQ        Mean   Pacing Time   Multicast    Pending
Interface              Peers  Un/Reliable  Un/Reliable  SRTT   Un/Reliable   Flow Timer   Routes
Et0/0                    1        0/0       0/0           3       0/2           50           0
Se1/0                    1        0/0       0/0          12       0/16          68           0
Se2/0                    1        0/0       0/0          15       0/15          71           0
Lo0                      0        0/0       0/0           0       0/0            0           0

The output of the show ip eigrp interfaces command shows you the working interfaces on which EIGRP is enabled. Notice that Loopback 0 does not peer with any router. In other words, on the Loopback 0 interface, EIGRP packets will not be received. The same would be true for a LAN interface on which there are no additional routers attached. To preserve some resources and instruct routers to stop sending and receiving packets on the specific interface, you can configure such interfaces as passive.

HQ(config)#router eigrp 100
HQ(config-router)#passive-interface default
HQ(config-router)#
*Aug 23 04:03:51.232: %DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor 172.16.3.2 (Serial2/0) is down: interface passive
*Aug 23 04:03:51.233: %DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor 172.16.1.2 (Serial1/0) is down: interface passive
*Aug 23 04:03:51.234: %DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor 172.16.2.2 (Ethernet0/0) is down: interface passive
HQ(config-router)#

HQ(config-router)#no passive-interface ethernet 0/0
HQ(config-router)#
*Aug 23 04:04:27.860: %DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor 172.16.2.2 (Ethernet0/0) is up: new adjacency
HQ(config-router)#no passive-interface serial 1/0
HQ(config-router)#
*Aug 23 04:04:38.754: %DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor 172.16.1.2 (Serial1/0) is up: new adjacency
HQ(config-router)#no passive-interface serial 2/0
HQ(config-router)#
*Aug 23 04:04:45.865: %DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor 172.16.3.2 (Serial2/0) is up: new adjacency
HQ(config-router)#

HQ#show ip protocols
*** IP Routing is NSF aware ***

Routing Protocol is "eigrp 100"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  Default networks flagged in outgoing updates
  Default networks accepted from incoming updates
  EIGRP-IPv4 Protocol for AS(100)
    Metric weight K1=1, K2=0, K3=1, K4=0, K5=0
    NSF-aware route hold timer is 240
    Router-ID: 192.168.0.1
    Topology : 0 (base)
      Active Timer: 3 min
      Distance: internal 90 external 170
      Maximum path: 4
      Maximum hopcount 100
      Maximum metric variance 1

  Automatic Summarization: disabled
  Maximum path: 4
  Routing for Networks:
    0.0.0.0
  Passive Interface(s):
  Passive Interface(s):
    Loopback0
  Routing Information Sources:
    Gateway         Distance      Last Update
    172.16.2.2            90      00:00:27
    172.16.3.2            90      00:00:27
    172.16.1.2            90      00:00:27
  Distance: internal 90 external 170

HQ#sh ip eigrp int
EIGRP-IPv4 Interfaces for AS(100)
                              Xmit Queue   PeerQ        Mean   Pacing Time   Multicast    Pending
Interface              Peers  Un/Reliable  Un/Reliable  SRTT   Un/Reliable   Flow Timer   Routes
Et0/0                    1        0/0       0/0           8       0/2           50           0
Se1/0                    1        0/0       0/0          16       0/15          87           0
Se2/0                    1        0/0       0/0        1228       0/15        6143       

BR1#debug eigrp packets hello
    (HELLO)
EIGRP Packet debugging is on
BR1#
*Aug 23 04:06:28.894: EIGRP: Received HELLO on Serial0/0 nbr 172.16.1.1
*Aug 23 04:06:28.894:   AS 100, Flags 0x0:(NULL), Seq 0/0 interfaceQ 0/0 iidbQ un/rely 0/0 peerQ un/rely 0/0
BR1#
*Aug 23 04:06:32.259: EIGRP: Sending HELLO on Serial0/0
*Aug 23 04:06:32.259:   AS 100, Flags 0x0:(NULL), Seq 0/0 interfaceQ 0/0 iidbQ un/rely 0/0
BR1#
*Aug 23 04:06:33.410: EIGRP: Received HELLO on Serial0/0 nbr 172.16.1.1
*Aug 23 04:06:33.410:   AS 100, Flags 0x0:(NULL), Seq 0/0 interfaceQ 0/0 iidbQ un/rely 0/0 peerQ un/rely 0/0
BR1#
*Aug 23 04:06:36.735: EIGRP: Sending HELLO on Serial0/0
*Aug 23 04:06:36.735:   AS 100, Flags 0x0:(NULL), Seq 0/0 interfaceQ 0/0 iidbQ un/rely 0/0
*Aug 23 04:06:37.714: EIGRP: Received HELLO on Serial0/0 nbr 172.16.1.1
*Aug 23 04:06:37.714:   AS 100, Flags 0x0:(NULL), Seq 0/0 interfaceQ 0/0 iidbQ un/rely 0/0 peerQ un/rely 0/0
BR1#

HQ#show ip eigrp interface detail
EIGRP-IPv4 Interfaces for AS(100)
                              Xmit Queue   PeerQ        Mean   Pacing Time   Multicast    Pending
Interface              Peers  Un/Reliable  Un/Reliable  SRTT   Un/Reliable   Flow Timer   Routes
Et0/0                    1        0/0       0/0           8       0/2           50           0
  Hello-interval is 5, Hold-time is 15
Se1/0                    1        0/0       0/0          16       0/15          87           0
  Hello-interval is 5, Hold-time is 15
Se2/0                    1        0/0       0/0        1228       0/15        6143           0
  Hello-interval is 60, Hold-time is 180

BR1#debug eigrp packets hello
HQ(config)#int serial 1/0
HQ(config-if)#shu
HQ(config-if)#shutdown
HQ(config-if)#
*Aug 23 04:09:37.990: %DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor 172.16.1.2 (Serial1/0) is down: interface down
HQ(config-if)#

BR1#
*Aug 23 04:09:38.384: EIGRP: Sending HELLO on Serial0/0
*Aug 23 04:09:38.384:   AS 100, Flags 0x0:(NULL), Seq 0/0 interfaceQ 0/0 iidbQ un/rely 0/0
BR1#
*Aug 23 04:09:43.122: EIGRP: Sending HELLO on Serial0/0
*Aug 23 04:09:43.122:   AS 100, Flags 0x0:(NULL), Seq 0/0 interfaceQ 0/0 iidbQ un/rely 0/0
BR1#
*Aug 23 04:09:47.730: EIGRP: Sending HELLO on Serial0/0
*Aug 23 04:09:47.730:   AS 100, Flags 0x0:(NULL), Seq 0/0 interfaceQ 0/0 iidbQ un/rely 0/0
BR1#
*Aug 23 04:09:50.705: %DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor 172.16.1.1 (Serial0/0) is down: holding time expired

BR1#

RIPng

R2(config)#ipv6 unicast-routing
R2(config)#ipv6 router rip CCNP_RIP

R2#show ipv6 int brief
Ethernet0/0            [administratively down/down]
    unassigned
Ethernet0/1            [up/up]
    FE80::A8BB:CCFF:FE00:AE10
    2001:DB8:A01:1400::2
Ethernet0/2            [administratively down/down]
    unassigned
Ethernet0/3            [administratively down/down]
    unassigned
Ethernet1/0            [administratively down/down]
    unassigned
Ethernet1/1            [administratively down/down]
    unassigned
Ethernet1/2            [administratively down/down]
    unassigned
Ethernet1/3            [administratively down/down]
    unassigned
Ethernet2/0            [administratively down/down]
    unassigned
Ethernet2/1            [administratively down/down]
    unassigned
Ethernet2/2            [administratively down/down]
    unassigned
Ethernet2/3            [administratively down/down]
    unassigned
Ethernet3/0            [administratively down/down]
    unassigned
Ethernet3/1            [administratively down/down]
    unassigned
Ethernet3/2            [administratively down/down]
    unassigned
Ethernet3/3            [administratively down/down]
    unassigned
Loopback0              [up/up]
    FE80::A8BB:CCFF:FE00:AE00
    2001:DB8:A01:1E00::1

R2(config)#int ethernet 3/0
R2(config-if)#ipv6 enable

Ethernet3/0            [up/up]
    FE80::A8BB:CCFF:FE00:AE03
al habilitar ipv6 enable en la interface se crear la link local.
si se configura una global addres ipv6, se crea tambien una link local.

R2# sh ipv6 protocols
IPv6 Routing Protocol is "rip CCNP_RIP"
  Interfaces:
    None
  Redistribution:
    None

R2(config)#int ethernet0/1
R2(config-if)#ipv6 rip CCNP_RIP enable
R2(config)#int loopback0
R2(config-if)#ipv6 rip CCNP_RIP enable

R2#sh ipv6 protocols
IPv6 Routing Protocol is "rip CCNP_RIP"
  Interfaces:
    Loopback0
    Ethernet0/1
  Redistribution:
    None

R2#show ipv6 route
IPv6 Routing Table - default - 7 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
       B - BGP, R - RIP, I1 - ISIS L1, I2 - ISIS L2
       IA - ISIS interarea, IS - ISIS summary, D - EIGRP, EX - EIGRP external
       ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect
       O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
R   2001:DB8:A01:100::/64 [120/2]
     via FE80::A8BB:CCFF:FE00:5530, Ethernet0/1
R   2001:DB8:A01:A00::/64 [120/2]
     via FE80::A8BB:CCFF:FE00:5530, Ethernet0/1
C   2001:DB8:A01:1400::/64 [0/0]
     via Ethernet0/1, directly connected
L   2001:DB8:A01:1400::2/128 [0/0]
     via Ethernet0/1, receive
C   2001:DB8:A01:1E00::/64 [0/0]
     via Loopback0, directly connected
L   2001:DB8:A01:1E00::1/128 [0/0]
     via Loopback0, receive
L   FF00::/8 [0/0]
     via Null0, receive

R1(config)#int ethernet 0/3
R1(config-if)#ipv6 rip CCNP_RIP default-information originate

R2#show ipv6 route
IPv6 Routing Table - default - 7 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
       B - BGP, R - RIP, I1 - ISIS L1, I2 - ISIS L2
       IA - ISIS interarea, IS - ISIS summary, D - EIGRP, EX - EIGRP external
       ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect
       O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
R   2001:DB8:A01:100::/64 [120/2]
     via FE80::A8BB:CCFF:FE00:5530, Ethernet0/1
R   2001:DB8:A01:A00::/64 [120/2]
     via FE80::A8BB:CCFF:FE00:5530, Ethernet0/1
C   2001:DB8:A01:1400::/64 [0/0]
     via Ethernet0/1, directly connected
L   2001:DB8:A01:1400::2/128 [0/0]
     via Ethernet0/1, receive
C   2001:DB8:A01:1E00::/64 [0/0]
     via Loopback0, directly connected
L   2001:DB8:A01:1E00::1/128 [0/0]
     via Loopback0, receive
L   FF00::/8 [0/0]
     via Null0, receive

xxxxxxxxxxxxxxxxxxx
R1(config)#int ethernet 0/3
R1(config-if)#ipv6 rip CCNP_RIP default-information only

R2#sh ipv6 route
IPv6 Routing Table - default - 6 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
       B - BGP, R - RIP, I1 - ISIS L1, I2 - ISIS L2
       IA - ISIS interarea, IS - ISIS summary, D - EIGRP, EX - EIGRP external
       ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect
       O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
R   ::/0 [120/2]
     via FE80::A8BB:CCFF:FE00:5530, Ethernet0/1
C   2001:DB8:A01:1400::/64 [0/0]
     via Ethernet0/1, directly connected
L   2001:DB8:A01:1400::2/128 [0/0]
     via Ethernet0/1, receive
C   2001:DB8:A01:1E00::/64 [0/0]
     via Loopback0, directly connected
L   2001:DB8:A01:1E00::1/128 [0/0]
     via Loopback0, receive
L   FF00::/8 [0/0]
     via Null0, receive

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

NAT

ip nat pool TEST1 209.165.201.5 209.165.201.10 prefix-length 27
ip nat source list 10 pool TEST1
ip nat source static 172.16.10.10 209.165.201.2

ip nat pool TEST1 209.165.201.5 209.165.201.10 prefix-length 27

access-list 10 permit 192.168.10.0 0.0.0.255

interface Ethernet0/0

 ip address 192.168.10.1 255.255.255.0

 ip nat enable

end

interface Ethernet0/1

 ip address 172.16.10.1 255.255.255.0

 ip nat enable

end

interface Ethernet0/2

 ip address 209.165.201.1 255.255.255.224

 ip nat enable

end

R1#sh ip nat nvi translations

Pro Source global      Source local       Destin  local      Destin  global

icmp 209.165.201.2:1   172.16.10.10:1     209.165.202.129:1  209.165.202.129:1

--- 209.165.201.2      172.16.10.10       ---                ---

icmp 209.165.201.5:5   192.168.10.10:5    209.165.201.2:5    172.16.10.10:5

--- 209.165.201.5      192.168.10.10      ---                ---

PBR

ip access-list extended PBR-ACL
 permit ip host 192.168.110.10 any
 match ip address PBR-ACL

route-map PBR-RP permit 10

 match ip address PBR-ACL

 set ip next-hop 10.10.10.1

interface Ethernet0/1

 description LAN

 ip address 192.168.110.1 255.255.255.0

 ip flow ingress

 ip policy route-map PBR-RP

end

BR1#sh ip policy

Interface      Route map

Ethernet0/1    PBR-RP

BR1#sh route-map PBR-PR

route-map PBR-PR not found

BR1#sh route-map PBR-RP

route-map PBR-RP, permit, sequence 10

  Match clauses:

    ip address (access-lists): PBR-ACL

  Set clauses:

    ip next-hop 10.10.10.1

  Policy routing matches: 26 packets, 2640 bytes

BR1# debug ip policy

Policy routing debugging is on

BR1#

*Aug 17 02:05:50.288: IP: s=192.168.110.10 (Ethernet0/1), d=192.168.100.1, len 1                      00, FIB policy match

*Aug 17 02:05:50.288: IP: s=192.168.110.10 (Ethernet0/1), d=192.168.100.1, len 1                      00, PBR Counted

*Aug 17 02:05:50.288: IP: s=192.168.110.10 (Ethernet0/1), d=192.168.100.1, g=10.                      10.10.1, len 100, FIB policy routed

*Aug 17 02:10:28.741: IP: s=192.168.110.20 (Ethernet0/1), d=192.168.100.1, len 100, FIB policy rejected(no match) - normal forwarding

*Aug 17 02:10:28.743: IP: s=192.168.110.20 (Ethernet0/1), d=192.168.100.1, len 100, FIB policy rejected(no match) - normal forwarding

*Aug 17 02:10:28.743: IP: s=192.168.110.20 (Ethernet0/1), d=192.168.100.1, len 100, FIB policy rejected(no match) - normal forwarding