Latest revision as of 12:21, 15 April 2014

hej

[edit] Route Redistribution

Hallå

[edit] Tough Questions

1. Which Command filters to the internal OSPF-routers, when redistribbuting EIGRP into OSPF

   A) Under the EIGRP process, insert the distribute list BLOCK_NET_1 out ospf 1 command.

   B) Under the OSPF process, insert the distribute list BLOCK_NET_1 in serial 1/0 command.

   C) Under the EIGRP process, insert the distribute list BLOCK_NET_1 in serial 1/0 command.

   D) Under the OSPF process, insert the distribute list BLOCK_NET_1 out eigrp 1 command.

   Rob say's: I thing you should read it "out of eigrp 1 (into eospf)

2. OSPF external routes are called E2, not EX, in the routing table
3. What is needed for redistribute IGRP into EIGRP

 Exhibit:
 router eigrp 123
   net 10.10.10.0
   no auto-summary
 router igrp 123
   net 172.16.0.0
   net 172.17.0.0

1. WRONG: under EIGRP add redistribute igrp 123

   RIGHT: None, EIGRP and IGRP are automatically redistributed in this case (with same AS #)

   Rob say's: Ne need for seed-metric between EIGRP and IGRP (metric is same (but facto 256?))

2. Don't forget metric, or default-metric, when redistributing into EIGRP or RIP

   OSPF uses 20 (1 for BGP) as default seed metric. BGP uses IGP value

3. What are two reasons for appearance of 0.0.0.0 as the next hop for a network in the show ip bgp command?

   The network was originated via redistribution of an interior gateway protocol into BGP

   The network was originated via a network or aggregate command

4. How to send a default route to two downstream neighbors?

   RIGHT: redistribute static, ip route 0.0.0.0 0.0.0.0 Null0

   WRONG: ip default-network 20.20.20.0 (the upstream interface network)