Configuration Information - Dell S6100 Configuration Manual

IPv6 Reachability and IPv6 Interface Address. Also, a new IPv6 protocol identifier has also been included in the supported TLVs. The new
TLVs use the extended metrics and up/down bit semantics.
Multi-topology IS-IS adds TLVs:
• MT TLV — contains one or more Multi-Topology IDs in which the router participates. This TLV is included in IIH and the first fragment
of an LSP.
• MT Intermediate Systems TLV — appears for every topology a node supports. An MT ID is added to the extended IS reachability TLV
type 22.
• MT Reachable IPv4 Prefixes TLV — appears for each IPv4 an IS announces for a given MT ID. Its structure is aligned with the
extended IS Reachability TLV Type 236 and it adds an MT ID.
• MT Reachable IPv6 Prefixes TLV — appears for each IPv6 an IS announces for a given MT ID. Its structure is aligned with the
extended IS Reachability TLV Type 236 and add an MT ID.
By default, Dell Networking OS supports dynamic host name exchange to assist with troubleshooting and configuration. By assigning a
name to an IS-IS NET address, you can track IS-IS information on that address easier. Dell Networking OS does not support ISO CLNS
routing; however, the ISO NET format is supported for addressing.
To support IPv6, the Dell Networking implementation of IS-IS performs the following tasks:
• Advertises IPv6 information in the PDUs.
• Processes IPv6 information received in the PDUs.
• Computes routes to IPv6 destinations.
• Downloads IPv6 routes to the RTM for installing in the FIB.
• Accepts external IPv6 information and advertises this information in the PDUs.
The following table lists the default IS-IS values.
Table 42. IS-IS Default Values
IS-IS Parameter
Complete sequence number PDU (CSNP) interval
IS-to-IS hello PDU interval
IS-IS interface metric
Metric style
Designated Router priority
Circuit Type
IS Type
Equal Cost Multi Paths

Configuration Information

To use IS-IS, you must configure and enable IS-IS in two or three modes: CONFIGURATION ROUTER ISIS, CONFIGURATION INTERFACE,
and ( when configuring for IPv6) ADDRESS-FAMILY mode. Commands in ROUTER ISIS mode configure IS-IS globally, while commands
executed in INTERFACE mode enable and configure IS-IS features on that interface only. Commands in the ADDRESS-FAMILY mode are
specific to IPv6.
NOTE: When using the IS-IS routing protocol to exchange IPv6 routing information and to determine destination reachability, you
can route IPv6 along with IPv4 while using a single intra-domain routing protocol. The configuration commands allow you to
enable and disable IPv6 routing and to configure or remove IPv6 prefixes on links.
Except where identified, the commands described in this chapter apply to both IPv4 and IPv6 versions of IS-IS.
Default Value
10 seconds
10 seconds
10
Narrow
64
Level 1 and Level 2
Level 1 and Level 2
16
Intermediate System to Intermediate System 461