Section 4: ISDN (6 Points)
Configure ISDN on R3 and R5 using PPP. R3 and R5 should be able to ping each other across the ISDN link.
If you configured this correctly as shown in Example 6-39, you have scored 2 points.
Make sure that your routing protocol is passed across the ISDN link only when the connectivity is established.
If you configured this correctly as shown in Example 6-39, you have scored 2 points.
The key to configuring as requested is to avoid having ISDN advertise or pass traffic through the link when R5-fa0/0 is up. R3 and R5 are running CLNS, which makes the scenario even more interesting.
Example 6-39. R3 and R5 ISDN Configuration
R3#sh run int bri0/0 Building configuration... Current configuration : 340 bytes ! interface BRI0/0 ... |
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