Plugga CCNP Route--Route Redistribution
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Route Redistribution
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Tough Questions
- 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)
- OSPF external routes are called E2, not EX, in the routing table
- 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
- 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?))
- 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
- 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
- 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)