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Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Command Reference, Cisco IOS Release 15.1(3)MR
OL-26895-01
Chapter Cisco MWR 2941 Router Command Reference, Release 15.1(3)MR
router isis
You can configure only one IS-IS routing process to perform Level 2 (interarea) routing. You can
configure this process to perform Level 1 (intra-area) routing at the same time. You can configure up to
29 additional processes as Level 1-only processes. If Level 2 routing is configured on any process, all
additional processes are automatically configured as Level 1.
An interface cannot be part of more than one area, except in the case where the associated routing
process is performing both Level 1 and Level 2 routing. On media such as WAN media where
subinterfaces are supported, different subinterfaces could be configured for different areas.
If Level 2 routing is not desired for a given area, use the is-type command to remove Level 2. Level 2
routing can then be enabled on some other router instance.
Explicit redistribution between IS-IS instances is prohibited (prevented by the parser). In other words,
you cannot issue a redistribute isis area-tag command in the context of another IS-IS router instance
(router isis area-tag). Redistribution from any other routing protocol into a particular area is possible,
and is configured per router instance, as in Cisco IOS software Release 12.0, using the redistribute and
route map commands. By default, redistribution is into Level 2.
If multiple Level 1 areas are defined, the Target Address Resolution Protocol (TARP) behaves in the
following way:
• The locally assigned target identifier gets the network service access point (NSAP) of the Level 2
area, if present.
• If only Level 1 areas are configured, the router uses the NSAP of the first active Level 1 area as
shown in the configuration at the time of TARP configuration (“tarp run”). (Level 1 areas are sorted
alphanumerically by tag name, with capital letters coming before lowercase letters. For example,
AREA-1 precedes AREA-2, which precedes area-1.) Note that the target identifier NSAP could
change following a reload if a new Level 1 area is added to the configuration after TARP is running.
• The router continues to process all Type 1 and 2 protocol data units (PDUs) that are for this router.
Type 1 PDUs are processed locally if the specified target identifier is in the local target identifier
cache. If not, they are “propagated” (routed) to all interfaces in the same Level 1 area. (The same
area is defined as the area configured on the input interface.)
• Type 2 PDUs are processed locally if the specified target identifier is in the local target identifier
cache. If not, they are propagated via all interfaces (all Level 1 or Level 2 areas) with TARP enabled.
If the source of the PDU is from a different area, the information is also added to the local target
identifier cache. Type 2 PDUs are propagated via all static adjacencies.
• Type 4 PDUs (for changes originated locally) are propagated to all Level 1 and Level 2 areas
(because internally they are treated as “Level 1-2”).
• Type 3 and 5 PDUs continue to be routed.
• Type 1 PDUs are propagated only via Level 1 static adjacencies if the static NSAP is in one of the
Level 1 areas in this router.
After you enter the router isis command, you can enter the maximum number of paths. There can be
from 1 to 32 paths.
Examples The following example configures IS-IS for IP routing, with system ID 0000.0000.0002 and area ID
01.0001, and enables IS-IS to form adjacencies on Ethernet interface 0 and serial interface 0. The IP
prefix assigned to Ethernet interface 0 will be advertised to other IS-IS routers.
router isis tag1
net 01.0001.0000.0000.0002
is-type level-1
!
interface ethernet 0
- Release 15.1(3)MR 1
- Configuring a Policy Map 14
- Restrictions 15
- Policy Map Configuration Mode 27
- Class Characteristics 27
- Predefined Default Class 27
- Tail Drop or WRED 27
- Fragments 28
- If ID Choice Is Anything Else 72
- Unique Device Identifier 73
- Cisco HWIC-4SHDSL 88
- SNAP Encapsulation Example 96
- OL-26895-01 105
- • n393—1 to 10. Default is 4 133
- • proxy-register 187
- • list access-list 187
- • route-map map-name 187
- Support for Serial Lines 194
- Syntax Description 195
- Keepalive Time Interval 203
- Line Failure 203
- Dropped Packets 203
- DSCP Values 226
- Match Packets on DSCP Values 227
- • match access-group 231
- • match input-interface 231
- • match mpls experimental 231
- • match protocol 231
- Precedence Values and Names 233
- IPv4-Specific Traffic Match 233
- IPv6-Specific Traffic Match 234
- Support Restrictions 237
- ATM Mode Example 247
- CAS Mode Example 247
- Router(config)# no mpls ip 250
- Release 12.2(33)SRB 259
- • QL-PRC 275
- • QL-SSU-A 275
- • QL-SSU-B 275
- • QL-SEC 275
- • QL-DNU 275
- All Supported Platforms 303
- Hierarchical Policy Maps 304
- How Bandwidth Is Calculated 305
- • conform-action is transmit 311
- • exceed-action is drop 311
- • violate-action is drop 311
- Token Buckets 314
- Updating Token Buckets 315
- Marking Traffic 315
- Two-Rate Policing 316
- Syntax for Percent 318
- Command Application 332
- • Data encapsulation type 334
- • Control protocol 334
- • 4—1 packet every 16 seconds 336
- • 3—1 packet every 8 seconds 336
- • 2—1 packet every 4 seconds 336
- • 1—1 packet every 2 seconds 336
- • 0—1 packet every second 336
- Command Description 341
- Router(config)# exit 358
- Weighted Fair Queueing 366
- • Control network loops 376
- • Handle link failures 376
- • Improve convergence time 376
- the following adapters: the 409
- to specify the “from-field” 412
- • EF (expedited forwarding) 420
- Precedence Value and Queueing 421
- 2. ip tos reflect 429
- 3. ip tos tos-value 429
- Command Compatibility 440
- Bit Settings 440
- Precedence Value 441
- Committed Information Rate 449
- IMA Group 456
- M-PAIR Group 456
- 1-PAIR and 2-PAIR Group 456
- DSL Group with 1 Pair 458
- DSL Group with 2 Pairs 458
- DSL Group with 3 Pairs 458
- DSL Group with 4 Pairs 458
- • Interface name and number 471
- • Identifier (group ID) 475
- ADSL: Example 490
- • Domain name 495
- • Domain index 495
- • Domain level 495
- Field Description 504
- Reliability Errors 524
- Protocol Errors 524
- UNI Id Identifier of the UNI 526
- EVC Id Identifier of the EVC 526
- • Local and remote OAM mode 528
- • Remote platform identity 528
- • Remote loopback events 531
- Traffic Policing: Example 583
- Tunnel Marking: Example 588
- ATM Shared Port Adapter 590
- (continued) 595
- Policing 597
- Policing and Shaping 599
- Traffic Shaping: Example 600
- UDP encapsulation 613
- • priority is 128 647
- Router(config-if)# 648
- • Up to 2 queues 670
- • Up to 2 interfaces 670
- • 1 queue and 1 interface 670
- Router(config-if)# switchport 672
- GRE Tunneling Example 693
- Peak Value 705
- Average Value 705
- Burst Value 705
- Activating the Primary Member 709
- Activating the Backup Member: 709
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