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VRF & EIGRP Routing

zekebashi
Enthusiast
Enthusiast

Hello,

I setup a GNS3 lab to test VRF and EIGRP routing. It's a simple lab where I have two switches(VSS_Dist1 & Core1). Both have VRF SharedVRF, SVI 992, which is in VRF SharedVRF, and EIGRP 900. I advertised network 172.26.90.0/24 on both EIGRP processes on both switches. Both switches established EIGPR relationship; however, there's no entries for the any routes advertised through EIGRP. See config below.

Why can't I ping the SVI of each switch? Also, why isn't EIGRP advertising the networks of the interfaces I included in the EIGPR process?


Thanks in advance.

========================================================================

Configuration on Switch VSS_Dist1_LAB

VSS_Dist1_LAB#

ip vrf SharedVRF


!
interface Vlan992
description SharedVRF to Core1_LAB
ip vrf forwarding SharedVRF
ip address 172.26.90.17 255.255.255.248
!
router eigrp 1902
no auto-summary
!
address-family ipv4 vrf SharedVRF
network 2.2.2.2 0.0.0.0
network 172.26.90.0 0.0.0.255
no auto-summary
autonomous-system 900
exit-address-family
!

Output:
VSS_Dist1_LAB#sh ip route eigrp 900

VSS_Dist1_LAB#

VSS_Dist1_LAB#sh ip eigrp vrf SharedVRF neighbors
IP-EIGRP neighbors for process 900
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 172.26.90.19 Vl992 11 00:41:24 2003 5000 0 11

VSS_Dist1_LAB#ping vrf SharedVRF 172.26.90.19

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.26.90.19, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
VSS_Dist1_LAB#
============================================================================
Configuration on Switch VSS_Dist1_LAB

Core1_LAB#

ip vrf SharedVRF


!
interface Vlan992
description SharedVRF to VSS_DIST1
ip vrf forwarding SharedVRF
ip address 172.26.90.19 255.255.255.248
!
router eigrp 1902
no auto-summary
!
address-family ipv4 vrf SharedVRF
network 2.2.2.2 0.0.0.0
network 172.26.90.0 0.0.0.255
no auto-summary
autonomous-system 900
exit-address-family
!

Core1_LAB#sh ip eigrp vrf SharedVRF neighbors
IP-EIGRP neighbors for process 900
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 172.26.90.17 Vl992 14 00:45:31 2071 5000 0 7
Core1_LAB#


Core1_LAB#ping vrf SharedVRF 172.26.90.17

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.26.90.17, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
======================

3 Replies 3

Amit Goyal
Beginner
Beginner

Hi Zekebashi

#sh ip eigrp vrf SharedVRF topology
EIGRP-IPv4 Topology Table for AS(900)/ID(172.26.90.17) VRF(SharedVRF)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status

P 172.26.90.16/29, 1 successors, FD is 281600
        via Connected, Vlan992.

Please rate if it helped

HTH

-Amit

Thanks for the input. 

The ping still doesn't work. I still can't ping neither the loopback nor the SVI interfaces. 

Here's the config on Core1 sw:

Core1_LAB#sh run
Building configuration...

Current configuration : 2267 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Core1_LAB
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
no ip icmp rate-limit unreachable
ip cef
!
!
ip vrf SharedVRF
rd 90:17
!
!
no ip domain lookup
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3

ip tcp synwait-time 5
!
interface Loopback0
ip vrf forwarding SharedVRF
ip address 1.1.1.1 255.255.255.255
!

interface Vlan992
ip vrf forwarding SharedVRF
ip address 172.26.90.19 255.255.255.248
!
router eigrp 1902
no auto-summary
!
address-family ipv4 vrf SharedVRF
network 1.1.1.1 0.0.0.0
network 172.26.90.16 0.0.0.7
no auto-summary
autonomous-system 900
exit-address-family
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 172.26.90.17
!
!
no ip http server
no ip http secure-server
!
no cdp log mismatch duplex
!
!
control-plane
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
login
!
!
end

==================================================

VSS_Dist1_LAB#sh run
Building configuration...

Current configuration : 4009 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname VSS_Dist1_LAB
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
no ip icmp rate-limit unreachable
ip cef
!
!
ip vrf SharedVRF
rd 90:17
!
!
no ip domain lookup
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
!
ip tcp synwait-time 5
!
!
interface Loopback0
ip vrf forwarding SharedVRF
ip address 2.2.2.2 255.255.255.255

interface Vlan992
description SharedVRF to EPACore
ip vrf forwarding SharedVRF
ip address 172.26.90.17 255.255.255.248
!
router eigrp 1902
no auto-summary
!
address-family ipv4 vrf SharedVRF
network 2.2.2.2 0.0.0.0
network 172.26.90.16 0.0.0.7
no auto-summary
autonomous-system 900
exit-address-family
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 172.26.90.19
!
!
no ip http server
no ip http secure-server
!
no cdp log mismatch duplex
!
!
!
control-plane
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
login
!
!
end

VSS_Dist1_LAB#

================

Output when trying to ping the lo0(2.2.2.2) from Core1

Core1_LAB#ping vrf SharedVRF 2.2.2.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
.
*Mar 1 01:03:20.703: ICMP: echo reply rcvd, src 2.2.2.2, dst 172.26.90.19.
*Mar 1 01:03:22.735: ICMP: echo reply rcvd, src 2.2.2.2, dst 172.26.90.19.
*Mar 1 01:03:24.775: ICMP: echo reply rcvd, src 2.2.2.2, dst 172.26.90.19..
Success rate is 0 percent (0/5)
Core1_LAB#
*Mar 1 01:03:26.879: ICMP: echo reply rcvd, src 2.2.2.2, dst 172.26.90.19
Core1_LAB#
*Mar 1 01:03:28.907: ICMP: echo reply rcvd, src 2.2.2.2, dst 172.26.90.19
Core1_LAB#

=========================================================

Output when trying to ping SVI 172.26.90.17 on Core1

Core1_LAB#ping vrf SharedVRF 172.26.90.17

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.26.90.17, timeout is 2 seconds:
..
*Mar 1 01:04:27.691: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19.
*Mar 1 01:04:29.719: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19.
*Mar 1 01:04:31.759: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19.
Success rate is 0 percent (0/5)
Core1_LAB#
*Mar 1 01:04:33.787: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19
Core1_LAB#
*Mar 1 01:04:35.827: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19
Core1_LAB#

===========================

Core1_LAB#sh ip route vrf SharedVRF

Routing Table: SharedVRF 
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 not set

1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
2.0.0.0/32 is subnetted, 1 subnets
D 2.2.2.2 [90/156160] via 172.26.90.17, 00:38:22, Vlan992
172.26.0.0/29 is subnetted, 1 subnets
C 172.26.90.16 is directly connected, Vlan992
Core1_LAB#

---- 

Core1_LAB#sh ip eigrp vrf SharedVRF topology
IP-EIGRP Topology Table for AS(900)/ID(1.1.1.1) Routing Table: SharedVRF
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status

P 2.2.2.2/32, 1 successors, FD is 156160
via 172.26.90.17 (156160/128256), Vlan992
P 1.1.1.1/32, 1 successors, FD is 128256
via Connected, Loopback0
P 172.26.90.16/29, 1 successors, FD is 28160
via Connected, Vlan992
Core1_LAB#

Thanks in advance. 

~zK 

Hi zK,

I see that ICMP echo reply is coming.

Core1_LAB#ping vrf SharedVRF 2.2.2.2

*Mar 1 01:04:27.691: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19.
*Mar 1 01:04:29.719: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19.
*Mar 1 01:04:31.759: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19.
*Mar 1 01:04:33.787: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19
*Mar 1 01:04:35.827: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19

Core1_LAB#ping vrf SharedVRF 172.26.90.17

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.26.90.17, timeout is 2 seconds:
..
*Mar 1 01:04:27.691: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19.
*Mar 1 01:04:29.719: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19.
*Mar 1 01:04:31.759: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19.
*Mar 1 01:04:33.787: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19
*Mar 1 01:04:35.827: ICMP: echo reply rcvd, src 172.26.90.17, dst 172.26.90.19

Can you try connecting some PC behind the switch and check if PING is good?

Routes are visible in EIGRP topology

Core1_LAB#sh ip eigrp vrf SharedVRF topology
IP-EIGRP Topology Table for AS(900)/ID(1.1.1.1) Routing Table: SharedVRF
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status

P 2.2.2.2/32, 1 successors, FD is 156160
via 172.26.90.17 (156160/128256), Vlan992
P 1.1.1.1/32, 1 successors, FD is 128256
via Connected, Loopback0
P 172.26.90.16/29, 1 successors, FD is 28160
via Connected, Vlan992

HTH

-Amit

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