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This chapter explains the function and syntax of the International Organization for Standardization (ISO) Connectionless Network Services (CLNS) protocol commands: ignore-lsp-errors through show tarp blacklisted-adjacencies. For more information about defaults and usage guidelines, see the corresponding chapter of the Cisco IOS Apollo Domain, Banyan VINES, DECnet, ISO CLNS, and XNS Command Reference, Release 12.1.
To allow the router to ignore IS-IS link-state packets that are received with internal checksum errors rather than purging the link-state packets, use the ignore-lsp-errors command in router configuration mode. To disable this function, use the no form of this command.
ignore-lsp-errorsSyntax Description
This command has no arguments or keywords.
To allow Domain Name System (DNS) queries for CLNS addresses, use the ip domain-lookup nsap command in global configuration mode. To disable this function, use the no form of this command.
ip domain-lookup nsapSyntax Description
This command has no arguments or keywords.
To filter the establishment of IS-IS adjacencies, use the isis adjacency-filter command in interface configuration mode. To disable filtering of the establishment of IS-IS adjacencies, use the no form of this command.
isis adjacency-filter name [match-all]
Syntax Description
name Name of the filter set or expression to apply. match-all (Optional) All NSAP addresses must match the filter in order to accept the adjacency. If not specified (the default), only one address need match the filter in order for the adjacency to be accepted.
To filter the establishment of ISO IGRP adjacencies, use the iso-igrp adjacency-filter command in interface configuration mode. To disable filtering of the establishment of ISO IGRP adjacencies, use the no form of this command.
iso-igrp adjacency-filter name
Syntax Description
name Name of the filter set or expression to apply.
To cause IS-IS to generate a log message when an NLSP IS-IS adjacency changes state (up or down), use the log-adjacency-changes command in router configuration mode. To disable this function, use the no form of this command.
log-adjacency-changesSyntax Description
This command has no arguments or keywords.
To set the maximum transmission unit (MTU) size of IS-IS link-state packets (LSPs), use the lsp-mtu command in router configuration mode. To disable this function, use the no form of this command.
lsp-mtu size
Syntax Description
size Maximum packet size in bytes. The size must be less than or equal to the smallest MTU of any link in the network. The default size is 1497 bytes.
To define the match criterion, use the match clns address route-map command in configuration mode. Routes that have a network address matching one or more of the names---and that satisfy all other defined match criteria---will be redistributed. To remove the match criterion, use the no form of this command.
match clns address name [name...name]
Syntax Description
name Name of a standard access list, filter set, or expression.
To define the next-hop match criterion, use the match clns next-hop command in route-map configuration mode. Routes that have a next-hop router address matching one of the names---and that satisfy all other defined match criteria---will be redistributed. To remove the match criterion, use the no form of this command.
match clns next-hop name [name...name]
Syntax Description
name Name of an access list, filter set, or expression.
To define the route-source match criterion, use the match clns route-source command in route-map configuration mode. Routes that have been advertised by routers at the address specified by the name---and that satisfy all other defined match criteria---will be redistributed. To remove the specified match criterion, use the no form of this command.
match clns route-source name [name...name]
Syntax Description
name Name of access list, filter set, or expression.
To define the interface match criterion, use the match interface command in route-map configuration mode. Routes that have the next hop out one of the interfaces specified---and that satisfy all other defined match criteria---will be redistributed. To remove the specified match criterion, use the no form of this command.
match interface type number [type number...type number]
Syntax Description
type Interface type. number Interface number.
To define the metric match criterion, use the match metric command in route-map configuration mode. Routes that have the specified metric---and satisfy all other defined match criteria---will be redistributed. To remove the specified match criterion, use the no form of this command.
match metric metric-value
Syntax Description
metric-value Route metric. This can be an Interior Gateway Routing Protocol (IGRP) five-part metric.
To define the route-type match criterion, use the match route-type command in route-map configuration mode. Routes that have the specified route type---and satisfy all other defined match criteria---will be redistributed. To remove the specified match criterion, use the no form of this command.
match route-type {level-1 | level-2}
Syntax Description
level-1 IS-IS Level 1 routes. level-2 IS-IS Level 2 routes.
To specify different metrics for the ISO IGRP routing protocol on CLNS, use the metric weights router command in configuration mode. This command allows you to configure the metric constants used in the ISO IGRP composite metric calculation of reliability and load. To return the five k arguments to their default values, use the no form of this command.
metric weights qos k1 k2 k3 k4 k5
Syntax Description
qos QoS defines transmission quality and availability of service. The argument must be 0, the default metric. k1, k2, k3, k4, k5 Values that apply to ISO IGRP for the default metric QoS. The k values are metric constants used in the ISO IGRP equation that converts an IGRP metric vector into a scalar quantity. They are numbers from 0 to 127; higher numbers mean a greater multiplier effect.
To redistribute routes from one routing domain into another routing domain, use the redistribute command in router configuration mode. To disable redistribution, or to disable any of the specified keywords, use the no form of this command.
redistribute protocol [tag] [route-map map-tag]
Syntax Description
protocol Type of other routing protocol that is to be redistributed as a source of routes into the current routing protocol being configured. The keywords supported are iso-igrp, isis, and static. tag (Optional) Meaningful name for a routing process. route-map map-tag (Optional) Route map should be interrogated to filter the importation of routes from this source routing protocol to the current routing protocol. If not specified, all routes are redistributed. If this keyword is specified, but no route map tags are listed, no routes will be imported. The argument map-tag is the identifier of a configured route map. static Keyword static is used to redistribute static routes. When used without the optional keywords, this causes the Cisco IOS software to inject any OSI static routes into an OSI domain. clns (Optional) Keyword clns is used when redistributing OSI static routes into an IS-IS domain. ip (Optional) Keyword ip is used when redistributing IP into an IS-IS domain.
To define the conditions for redistributing routes from one routing protocol into another, use the route-map command in global configuration mode. To delete the route map, use the no form of this command.
route-map map-tag {permit | deny} sequence-number
Syntax Description
map-tag Meaningful name for the route map. The redistribute command uses this name to reference this route map. Multiple route-maps can share the same map tag name. Can either be an expression or a filter set. permit If the match criteria are met for this route map and permit is specified, the route is redistributed as controlled by the set actions. If the match criteria are not met and permit is specified, the next route map with the same map-tag is tested. If a route passes none of the match criteria for the set of route maps sharing the same name, it is not redistributed by that set. deny If the match criteria are met for the route map, and deny is specified, the route is not redistributed, and no further route maps sharing the same map tag name will be examined. sequence-number Number that indicates the position a new route map is to have in the list of route maps already configured with the same name. If given with the no form of this command, it specifies the position of the route map that should be deleted.
To identify the area the router will work in and let it know that it will be routing dynamically using the ISO IGRP protocol, use the router iso-igrp command in global configuration mode. To disable ISO IGRP routing for the system, use the no form of this command with the appropriate tag.
router iso-igrp [tag]
Syntax Description
tag (Optional) Meaningful name for a routing process. For example, you could define a routing process named Finance for the Finance department and another routing process named Marketing for the Marketing department. If not specified, a null tag is assumed. The tag argument must be unique among all CLNS router processes for a given router.
To specify the routing level of routes to be advertised into a specified area of the routing domain, use the set level command in route-map configuration mode. To disable advertising the specified routing level into a specified area, use the no form of this command.
set level {level-1 | level-2 | level-1-2}
Syntax Description
level-1 Inserted in IS-IS Level 1 link-state PDUs. level-2 Inserted in IS-IS Level 2 link-state PDUs. For IS-IS destinations, level-2 is the default. level-1-2 Inserted into both Level 1 and Level 2 IS-IS link-state PDUs.
To set the metric value to give the redistributed routes, use the set metric command in route-map configuration mode. To disable redistributing routes of a specific metric, use the no form of this command.
set metric metric-value
Syntax Description
metric-value Route metric. This can be an IGRP five-part metric.
To set the metric type to give redistributed routes, use the set metric-type command in route-map configuration mode. To disable redistributing routes of a specific metric type, use the no form of this command.
set metric-type {internal | external}
Syntax Description
internal IS-IS internal metric. external IS-IS external metric.
To set a tag value to associate with the redistributed routes, use the set tag command in route-map configuration mode. To disable redistributing routes with the specific tag, use the no form of this command.
set tag tag-value
Syntax Description
tag-value Name for the tag. The tag value to associate with the redistributed route. If not specified, the default action is to forward the tag in the source routing protocol onto the new destination protocol.
To display information about the CLNS network, use the show clns command in EXEC mode.
show clnsSyntax Description
This command has no arguments or keywords.
To display the CLNS routing cache, use the show clns cache command in EXEC mode. The cache contains an entry for each destination that has packet switching enabled. The output of this command includes entries showing each destination for which the router has switched a packet in the recent past. This includes the router itself.
show clns cacheSyntax Description
This command has no arguments or keywords.
To list the ES neighbors that this router knows about, use the show clns es-neighbors command in EXEC mode.
show clns area-tag es-neighbors [type number] [detail]
Syntax Description
area-tag Required for multiarea IS-IS configuration. Optional for conventional IS-IS configuration. Meaningful name for a routing process. This name must be unique among all IP or Connectionless Network Service (CLNS) router processes for a given router. If an area tag is not specified, a null tag is assumed and the process is referenced with a null tag. If an area tag is specified, output is limited to the specified area. type (Optional) Interface type. number (Optional) Interface number. detail (Optional) When specified, the areas associated with the end systems are displayed. Otherwise, a summary display is provided.
To display one or all currently defined CLNS filter expressions, use the show clns filter-expr command in EXEC mode.
show clns filter-expr [name] [detail]
Syntax Description
name (Optional) Name of the filter expression to display. If none is specified, all are displayed. detail (Optional) When specified, expressions are evaluated down to their most primitive filter set terms before being displayed.
To display one or all currently defined CLNS filter sets, use the show clns filter-set command in EXEC mode.
show clns filter-set [name]
Syntax Description
name (Optional) Name of the filter set to display. If none is specified, all are displayed.
To list the CLNS-specific information about each interface, use the show clns interface command in EXEC mode.
show clns interface [type number]
Syntax Description
type (Optional) Interface type. number (Optional) Interface number.
To display IS-IS related information for IS-IS router adjacencies, use the show clns is-neighbors command in EXEC mode. Neighbor entries are sorted according to the area in which they are located.
show clns area-tag is-neighbors [type number] [detail]
Syntax Description
area-tag Required for multiarea IS-IS configuration. Optional for conventional IS-IS configuration. Meaningful name for a routing process. This name must be unique among all IP or Connectionless Network Service (CLNS) router processes for a given router. If an area tag is not specified, a null tag is assumed and the process is referenced with a null tag. If an area tag is specified, output is limited to the specified area. type (Optional) Interface type. number (Optional) Interface number. detail (Optional) When specified, the areas associated with the intermediate systems are displayed. Otherwise, a summary display is provided.
To display information about Intermediate System-to-Intermediate System (IS-IS) neighbors and the areas to which they belong, use the show clns neighbor areas command in EXEC mode.
show clns area-tag neighbor areas
Syntax Description
area-tag Required for multiarea IS-IS configuration. Optional for conventional IS-IS configuration. Meaningful name for a routing process. This name must be unique among all IP or Connectionless Network Service (CLNS) router processes for a given router. If an area tag is not specified, a null tag is assumed and the process is referenced with a null tag. If an area tag is specified, output is limited to the specified area.
To display both ES and IS neighbors, use the show clns neighbors command in EXEC mode.
show clns area-tag neighbors [type number] [detail]
Syntax Description
area-tag Required for multiarea IS-IS configuration. Optional for conventional IS-IS configuration. Meaningful name for a routing process. This name must be unique among all IP or Connectionless Network Service (CLNS) router processes for a given router. If an area tag is not specified, a null tag is assumed and the process is referenced with a null tag. If an area tag is specified, output is limited to the specified area. type (Optional) Interface type. number (Optional) Interface number. detail (Optional) When specified, the area addresses advertised by the neighbor in the hello messages is displayed. Otherwise, a summary display is provided.
To list the protocol-specific information for each ISO IGRP routing process in the router, use the show clns protocol command in EXEC mode. There will always be at least two routing processes, a Level 1 and a Level 2, and there can be more.
show clns [domain | area-tag] protocol
Syntax Description
domain (Optional) Particular ISO IGRP routing domain. area-tag Required for multiarea IS-IS configuration. Optional for conventional IS-IS configuration. Meaningful name for a routing process. This name must be unique among all IP or Connectionless Network Service (CLNS) router processes for a given router. If an area tag is not specified, a null tag is assumed and the process is referenced with a null tag. If an area tag is specified, output is limited to the specified area.
To display one or all of the destinations to which this router knows how to route Connectionless Network Service (CLNS) packets, use the show clns route command in EXEC mode.
show clns route nsap
Syntax Description
nsap (Optional) CLNS Network Service Access Point (NSAP) address.
To list the CLNS packets this router has seen, use the show clns traffic command in EXEC mode.
show clns area-tag traffic
Syntax Description
area-tag Required for multiarea IS-IS configuration. Optional for conventional IS-IS configuration. Meaningful name for a routing process. This name must be unique among all IP or Connectionless Network Service (CLNS) router processes for a given router. If an area tag is not specified, a null tag is assumed and the process is referenced with a null tag. If an area tag is specified, output is limited to the specified area.
To display the IS-IS Level 1 forwarding table for IS-IS learned routes, use the show isis routes command in EXEC mode.
show isis area-tag routes
Syntax Description
area-tag Required for multiarea IS-IS configuration. Optional for conventional IS-IS configuration. Meaningful name for a routing process. This name must be unique among all IP or Connectionless Network Service (CLNS) router processes for a given router. If an area tag is not specified, a null tag is assumed and the process is referenced with a null tag. If an area tag is specified, output is limited to the specified area.
To display all route-maps configured or only the one specified, use the show route-map command in EXEC mode.
show route-map [map-name]
Syntax Description
map-name (Optional) Name of a specific route map.
To display all global TARP parameters, use the show tarp command in EXEC mode.
show tarpSyntax Description
This command has no arguments or keywords.
To list all adjacencies that have been blacklisted (that is, adjacencies to which this router will not propagate TARP PDUs to) by the tarp blacklist-adjacency command, use the show tarp blacklisted-adjacencies command in EXEC mode.
show tarp blacklisted-adjacenciesSyntax Description
This command has no arguments or keywords.
Posted: Wed Jul 26 16:50:53 PDT 2000
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