My Dearest Superman -
I'm having what should be an easily-solvable problem with ISDN. I have a
feeling the problem is with the mapping, but Caslow talks about a "dynamic
mapping" function provided by PPP. I don't see it happening. Here's the
gist
of it:
Goal: Have R2 (12.1(5)) be the dialer to R3 (12.1(5)T8). R3 may not initiate
any calls.
Result: R3 is receiving packets (RIP updates) from R2 once R2 initiates a
call. However, R3 cannot send packets to R2, even with the call established.
debug ip packet on R3:
01:28:51: IP: s=1.1.1.3 (local), d=1.1.1.2 (BRI0), len 100, sending
01:28:51: IP: s=1.1.1.3 (local), d=1.1.1.2 (BRI0), len 100, encapsulation
failed.
Configs:
hostname r2
no ip domain-lookup
isdn switch-type basic-ni
!
interface Loopback0
ip address 2.2.2.2 255.255.255.0
!
interface BRI0
ip address 1.1.1.2 255.255.255.0
encapsulation ppp
dialer idle-timeout 10000
dialer map ip 1.1.1.3 8358683
dialer map ip 3.3.3.3 8358684
dialer-group 1
isdn switch-type basic-ni
isdn spid1 0835868101
isdn spid2 0835868201
!
router rip
network 1.0.0.0
network 2.0.0.0
neighbor 1.1.1.3
!
dialer-list 1 protocol ip permit
!
end
-------------------------------
hostname r3
no ip domain-lookup
isdn switch-type basic-ni
!
interface Loopback0
ip address 3.3.3.3 255.255.255.0
!
interface BRI0
ip address 1.1.1.3 255.255.255.0
encapsulation ppp
dialer idle-timeout 10000
dialer-group 1
isdn switch-type basic-ni
isdn spid1 0835868301
isdn spid2 0835868401
!
router rip
network 1.0.0.0
network 3.0.0.0
neighbor 1.1.1.2
!
ip route 0.0.0.0 0.0.0.0 1.1.1.2
!
dialer-list 1 protocol ip permit
!
end
Any ideas why R3 can't send packets to R2 even when the call is
established? I'm stumped on this simple problem.
All my love,
Lois Lane
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=54276&t=54276
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