IOS XE 15.5
IOS XR 5.3
The topology for this demo:
In this post we will continue looking at VRF Lite but with IS-IS for IPv4 and IPv6. I covered the details of VRFs in the previous post, we'll just tweak the routing so that we will get IPv4 and IPv6 based routing in place. We'll use R4 and R3, IOS XR on 5.3 code doesn't support IS-IS based VRF configuration.
Currently, only default VRF is supported. VPNv4, VPNv6 and VPN routing and forwarding (VRF) address families, L3VPN and Multicast will be supported in a future release.
R3
router isis CCIE
vrf CCIE
net 49.0000.0000.0000.0003.00
metric-style wide
!
address-family ipv6
multi-topology
exit-address-family
!
interface GigabitEthernet1.102
ip router isis CCIE
ipv6 router isis CCIE
!
interface Loopback100
ip router isis CCIE
ipv6 router isis CCIE
R4
router isis CCIE
vrf CCIE
net 49.0000.0000.0000.0004.00
metric-style wide
!
address-family ipv6
multi-topology
exit-address-family
!
interface GigabitEthernet1.102
ip router isis CCIE
ipv6 router isis CCIE
!
interface Loopback100
ip router isis CCIE
ipv6 router isis CCIE
R4#sh isis neighbors
Tag CCIE:
System Id Type Interface IP Address State Holdtime Circuit Id
R3 L1 Gi1.102 192.168.34.3 UP 22 R4.01
R3 L2 Gi1.102 192.168.34.3 UP 25 R4.01
This output shows that we are peered with R3 both for Level1 and Level2 adjacency.
R4#sh clns interface
GigabitEthernet1.102 is up, line protocol is up
Checksums enabled, MTU 1497, Encapsulation SAP
ERPDUs enabled, min. interval 10 msec.
CLNS fast switching enabled
CLNS SSE switching disabled
DEC compatibility mode OFF for this interface
Next ESH/ISH in 12 seconds
Routing Protocol: IS-IS (CCIE)
Circuit Type: level-1-2
Interface number 0x1, local circuit ID 0x1
Level-1 Metric: 10, Priority: 64, Circuit ID: R4.01
DR ID: R4.01
Level-1 IPv6 Metric: 10
Number of active level-1 adjacencies: 1
Level-2 Metric: 10, Priority: 64, Circuit ID: R4.01
DR ID: R4.01
Level-2 IPv6 Metric: 10
Number of active level-2 adjacencies: 1
Next IS-IS LAN Level-1 Hello in 2 seconds
Next IS-IS LAN Level-2 Hello in 556 milliseconds
This output gives you an overview of all the particular options this interface is running for IS-IS.
R4#sh clns protocol
IS-IS Router: CCIE
System Id: 0000.0000.0004.00 IS-Type: level-1-2
Manual area address(es):
49.0000
Routing for area address(es):
49.0000
Interfaces supported by IS-IS:
GigabitEthernet1.102 - IP - IPv6
Loopback100 - IP - IPv6
Redistribute:
static (on by default)
eBGP-neighbors
Distance for L2 CLNS routes: 110
RRR level: none
Generate narrow metrics: none
Accept narrow metrics: none
Generate wide metrics: level-1-2
Accept wide metrics: level-1-2
This output from a protocol level, is the details around the protocol,
R4#sh ip route vrf CCIE isis
Routing Table: CCIE
Gateway of last resort is not set
100.0.0.0/32 is subnetted, 4 subnets
i L1 100.100.100.3
[115/20] via 192.168.34.3, 00:05:26, GigabitEthernet1.102
R4#sh ipv6 route vrf CCIE isis
IPv6 Routing Table - CCIE - 7 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
I1 FC00::3/128 [115/20]
via FE80::20C:29FF:FE87:8561, GigabitEthernet1.102
No comments:
Post a Comment