Novell Routing 267
To connect IPX networks with different encapsulations, use subinterfaces.
Novell Routing
Novell IPX uses Service Advertising Protocol (SAP) and RIP broadcasts to build a list of
available services and routes.
Routing Information Protocols, or RIPs, carry information on the route to take to get to a
specific network. RIP updates contain the destination network number, the hop-count, the delay,
and the next-hop gateway information. As with SAP updates, a router listens to the RIP updates
and builds a route table that lists all known routes.
RIP was Novell's first routing protocol. IPX RIP has many features that are similar to IP RIP.
One significant difference between the two protocols is route determination. In addition to
hop-count, IPX RIP uses delay as a metric. IPX RIP has the following features:
·
60-second update of routing tables
·
15 hop-count limit
·
Split horizon issues require the use of a full mesh
·
Delay as a metric
IPX RIP tracks delay as measured in ticks as well as hop count. By default, LAN hops are
counted as one tick, and WAN links are counted as six ticks. The tick count can be adjusted with
the ipx delay command. Table 8-4 shows the values that Cisco recommends for WAN links.
Table 8-3
IPX Encapsulation Types for Token Ring and FDDI
Novell Term
Cisco Term
FDDI_SNAP
SNAP
FDDI_802.2
SAP
TOKEN-RING
Novell-tr
TOKEN-RING_SNAP
SNAP
Table 8-4
Recommended Values for WAN Links
Bandwidth
Ticks
2.04 Mbps
6
1.544 Mbps
6
256 Kbps
6
128 Kbps
12
56 Kbps
18
87200333.book Page 267 Wednesday, August 22, 2001 2:37 PM