- Read Me First
- IS-IS Overview and Basic Configuration
- IPv6 Routing: Route Redistribution
- IPv6 Routing: IS-IS Support for IPv6
- Configuring Integrated IS-IS Protocol Shutdown Support Maintaining Configuration Parameters
- Customizing IS-IS for Your Network Design
- Segment Routing—IS-IS v4 node SID
- IS-IS MIB
- IS-IS Support for an IS-IS Instance per VRF for IP
- Overview of IS-IS Fast Convergence
- Setting Best Practice Parameters for IS-IS Fast Convergence
- Reducing Failure Detection Times in IS-IS Networks
- IPv6 Routing: IS-IS Multitopology Support for IPv6
- Reducing Link Failure and Topology Change Notification Times in IS-IS Networks
- IS-IS Support for Route Tags
- Enhancing Security in an IS-IS Network
- IS-IS IPv6 Administrative Tag
- IS-IS IPv6 Advertise Passive Only
- IS-IS IPv6 Multi-Process Support
- ISIS Local Microloop Protection
- IS-IS Advertise IPv6 Link Endpoint Information
- Finding Feature Information
- Information About IS-IS IPv6 Administrative Tag
- How to Configure an IS-IS IPv6 Administrative Tag
- Configuration Examples for IS-IS IPv6 Administrative Tag
- Example: Assigning a Tag to an IS-IS IPv6 Prefix
- Example: Assigning a High Priority Administrative Tag to an IS-IS IPv6 Prefix
- Example: Using an IS-IS IPv6 Administrative Tag to Redistribute Routes
- Example: Using an IS-IS IPv6 Administrative Tag to Configure Routes
- Example: Applying an IS-IS IPv6 Administrative Tag to a Summary Prefix
- Additional References
- Feature Information for IS-IS IPv6 Administrative Tag
IS-IS IPv6 Administrative Tag
The IS-IS IPv6 Administrative Tag feature allows you to assign a tag to IPv6 prefixes that you can use to apply administrative policies with a route map. For example, you can control routes redistributed between area and domain boundaries and between different routing protocols, or apply policies on Intermediate System-to-Intermediate System (IS-IS) routes.
- Finding Feature Information
- Information About IS-IS IPv6 Administrative Tag
- How to Configure an IS-IS IPv6 Administrative Tag
- Configuration Examples for IS-IS IPv6 Administrative Tag
- Additional References
- Feature Information for IS-IS IPv6 Administrative Tag
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Information About IS-IS IPv6 Administrative Tag
IS-IS Administrative Tags in IPv6 Prefixes
You can configure an IS-IS administrative tag value for IPv6 prefixes. You can then specify the tag value of IPv6 prefixes that IS-IS inserts into the link-state protocol data units (PDUs) it generates and those that it retrieves from LSPs.
How to Configure an IS-IS IPv6 Administrative Tag
- Assigning a Tag to an IS-IS IPv6 Prefix
- Assigning a High Priority Administrative Tag to an IS-IS IPv6 Prefix
- Using an IS-IS IPv6 Administrative Tag to Redistribute Routes
- Using an IS-IS IPv6 Administrative Tag to Configure Routes
- Applying an IS-IS IPv6 Tag to a Summary Prefix
Assigning a Tag to an IS-IS IPv6 Prefix
1.
enable
2.
configure
terminal
3.
router
isis
[area-tag]
4.
net
net1
5.
metric-style wide
6.
interface
[type
number]
7.
ipv6 address {ipv6-address/prefix-length |
prefix-name sub-bits/prefix-length}
8.
ipv6 router isis [area-tag]
9.
isis
ipv6
tag
tag-value
10.
end
11.
show
isis
database
verbose
DETAILED STEPS
Assigning a High Priority Administrative Tag to an IS-IS IPv6 Prefix
1.
enable
2.
configure
terminal
3.
router isis [area-tag]
4.
address-family ipv6
5.
ipv6 route priority high
tag
tag-value
6.
exit
7.
exit
DETAILED STEPS
Using an IS-IS IPv6 Administrative Tag to Redistribute Routes
1.
enable
2.
configure
terminal
3.
router isis [area-tag]
4.
address-family ipv6
5.
redistribute
isis
[process-id] {level-1 |
level-2}
into {level-1 |
level-2}
[distribute-list
list-name] [route-map
map-tag]
6.
exit
7.
exit
8.
route-map
map-tag
[permit |
deny] [sequence-number]
9.
match
tag
tag-value
[...tag-value]
10.
exit
DETAILED STEPS
Using an IS-IS IPv6 Administrative Tag to Configure Routes
1.
enable
2.
configure
terminal
3.
ipv6
route
[vrf
vrf-name]
ipv6-prefix/prefix-length {ipv6-address |
interface-type
interface-number [ipv6-address]} [nexthop-vrf [vrf-name |
default]] [administrative-distance] [administrative-multicast-distance |
unicast |
multicast] [next-hop-address] [tag
tag]
4.
router isis [area-tag]
5.
address-family ipv6
6.
redistribute
isis
[process-id] {level-1 |
level-2}
into {level-1 |
level-2}
[distribute-list
list-name] [route-map
map-tag
7.
exit
8.
exit
9.
route-map
map-tag
[permit |
deny] [sequence-number]
10.
set
tag
tag-value
11.
exit
DETAILED STEPS
Applying an IS-IS IPv6 Tag to a Summary Prefix
1.
enable
2.
configure
terminal
3.
router isis [area-tag]
4.
address-family ipv6
5.
ipv6
route
[vrf
vrf-name]
ipv6-prefix
/
prefix-length {ipv6-address |
interface-type
interface-number [ipv6-address]} [nexthop-vrf [vrf-name |
default]] [administrative-distance] [administrative-multicast-distance |
unicast |
multicast] [next-hop-address] [tag
tag]
6.
exit
7.
exit
8.
router isis [area-tag]
9.
address-family ipv6
10.
redistribute
isis
[process-id] {level-1|
level-2}
into {level-1 |level-2}
distribute-list
list-name
11.
summary-prefix
ipv6-prefix/
prefix-length {level-1
|
level-1-2|
level-2}
tag
tag-value
12.
end
13.
show
isis
database
verbose
DETAILED STEPS
Configuration Examples for IS-IS IPv6 Administrative Tag
- Example: Assigning a Tag to an IS-IS IPv6 Prefix
- Example: Assigning a High Priority Administrative Tag to an IS-IS IPv6 Prefix
- Example: Using an IS-IS IPv6 Administrative Tag to Redistribute Routes
- Example: Using an IS-IS IPv6 Administrative Tag to Configure Routes
- Example: Applying an IS-IS IPv6 Administrative Tag to a Summary Prefix
Example: Assigning a Tag to an IS-IS IPv6 Prefix
Device(config)# router isis Device(config-router)# net 49.0000.0000.0100.00 Device(config-router)# metric-style wide Device(config-router)# interface GigabitEthernet 0/0/0 Device(config-if)# ipv6 address 2005::1/64 Device(config-if)# ipv6 router isis Device(config-if)# isis ipv6 tag 200 Device(config-if)# end Device# show isis database verbose IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL Device.00-00 * 0x00000001 0xD27D 1189 0/0/0 Area Address: 49 NLPID: 0x8E Hostname: Device IPv6 Address: 2005::1 Metric: 10 IPv6 2005::/64 Route Admin Tag: 200 IS-IS Level-2 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL Device.00-00 * 0x00000001 0xD27D 1189 0/0/0 Area Address: 49 NLPID: 0x8E Hostname: Device IPv6 Address: 2005::1 Metric: 10 IPv6 2005::/64 Route Admin Tag: 200
Example: Assigning a High Priority Administrative Tag to an IS-IS IPv6 Prefix
Device(config)# router isis Device(config-router)# address-family ipv6 Device(config-router-af)# ipv6 route priority high tag 200
Example: Using an IS-IS IPv6 Administrative Tag to Redistribute Routes
Device(config)# router isis Device(config-router)# address-family ipv6 Device(config-router-af)# redistribute isis level-1 into level-2 route-map match-tag Device(config-router-af)# route-map match-tag Device(config-route-map)# match tag 100
Example: Using an IS-IS IPv6 Administrative Tag to Configure Routes
Device(config)# ipv6 route 2033::1/64 GigabitEthernet 0/0/0 Device(config)# router isis Device(config-router)# address-family ipv6 Device(config-router-af)# redistribute static level-2 route-map set-tag Device(config-router-af)# route-map set-tag Device(config-route-map)# set tag 300 Device(config-route-map)# end Device# show isis database verbose level-2 Device.00-00 * 0x0000004E 0x9805 1197 0/0/0 Area Address: 33 NLPID: 0xCC 0x8E Hostname: Device IP Address: 10.100.100.20 IPv6 Address: 2001:DB8::100 IPv6 Address: 2001:DB8::200 Metric: 10 IS-Extended route500.01 Metric: 10 IP 10.100.100.0/24 Metric: 10 IPv6 2001:DB8::/64 Metric: 10 IPv6 2001:DB8::/64 Metric: 10 IPv6-Interarea 11:1:1:1:1:1:1:1/128 Metric: 20 IPv6-Interarea 2003:DB8::/64 Metric: 0 IPv6 2033::/64 Route Admin Tag: 300
Example: Applying an IS-IS IPv6 Administrative Tag to a Summary Prefix
Device(config)# router isis Device(config)# ipv6 route 11:1:1:1:1:1::/96 GigabitEthernet 0/0/0 Device(config)# router isis Device(config-router)# address-family ipv6 Device(config-router-af)# redistribute static level-2 metric 50 Device(config-router-af)# summary-prefix 11:1:1:1::/64 tag 600 Device(config-route-map)# end Device# show isis database verbose level-2 IS-IS Level-2 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL Device.00-00 * 0x00000007 0x4AA7 1174 0/0/0 Area Address: 33 NLPID: 0xCC 0x8E Hostname: Device IP Address: 10.100.100.20 IPv6 Address: 2001:DB8::100 IPv6 Address: 2001:DB8::200 Metric: 10 IS-Extended route500.01 Metric: 10 IP 10.100.100.0/24 Metric: 10 IPv6 2001:DB8::/64 Metric: 10 IPv6 2001:DB8::/64 Metric: 10 IPv6 11:1:1:1::/64 Route Admin Tag: 600 (Summary route 11:1:1:1::/64 is advertised with tag 600) Device(config-router-af)#
Additional References
Related Documents
Related Topic |
Document Title |
---|---|
IPv6 addressing and connectivity |
IPv6 Configuration Guide |
Cisco IOS commands |
|
IPv6 commands |
Cisco IOS IPv6 Command Reference |
Cisco IOS IPv6 features |
Cisco IOS IPv6 Feature Mapping |
Standards and RFCs
Standard/RFC |
Title |
---|---|
RFCs for IPv6 |
IPv6 RFCs |
Technical Assistance
Description |
Link |
---|---|
The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password. |
Feature Information for IS-IS IPv6 Administrative Tag
Feature Name |
Releases |
Feature Information |
---|---|---|
IS-IS IPv6 Administrative Tag |
15.2(4)M 15.2(4)S 15.2(1)SY |
Allows you to assign a tag to IPv6 prefixes that you can use to apply administrative policy with a route map. The following commands were introduced or modified: ipv6 route priority high, isis ipv6 tag, redistribute isis (ipv6), show isis database verbose, summary-prefix (ipv6 IS-IS). |