From: Ccie candidate (beacc1e@yahoo.com)
Date: Fri Dec 27 2002 - 13:18:33 GMT-3
Hi
The following is my lab setup.
R5--------------|-INTERNET
|sdn |
| |
|sdn |
R3--------------| -INTERNET
R5 -config
interface BRI0/0
ip address 148.9.35.2 255.255.255.252
encapsulation ppp
load-interval 30
dialer map ip 148.9.35.1 name r3 broadcast 3331234
dialer map ip 148.9.35.1 name r3 broadcast 3331235
dialer map ip 199.172.16.0 name r3 broadcast 3331234
dialer map ip 199.172.16.0 name r3 broadcast 3331235
dialer map ip 199.172.0.0 name r3 broadcast 3331234
dialer map ip 199.172.0.0 name r3 broadcast 3331235
dialer load-threshold 1 either
dialer watch-group 1
dialer-group 1
isdn switch-type basic-dms100
isdn spid1 51055512340001
isdn spid2 51055512350001
ppp authentication chap
ppp multilink
r5#sh run | in dialer-list 1
dialer-list 1 protocol ip list 100
r5#sh access-l
r5#sh access-lists 100
Extended IP access list 100
deny ospf any any
deny tcp any any eq bgp
permit ip any any
r5#sh run | in watch-list
dialer watch-list 1 ip 199.172.16.0 255.255.240.0
dialer watch-list 1 ip 199.172.0.0 255.255.240.0
R3 configuration
interface BRI0/0
ip address 148.9.35.1 255.255.255.252
encapsulation ppp
load-interval 30
dialer load-threshold 1 inbound
dialer-group 1
isdn switch-type basic-dms100
isdn spid1 51033312340001
isdn spid2 51033312350001
ppp authentication chap callin
ppp multilink
r3#sh run | in dialer-list
dialer-list 1 protocol ip list 101
Extended IP access list 101
deny tcp any any eq bgp
permit ip any any (1 match)
r3#
On the bri0/0, the applied "dialer map ip" statement for watch-list there is no subnet mask info. How does the router differentiates the subnets if there is no subnet info ?
Do I have to specify the second dialer map in order bring the second b-channel up ?
r5#sh ip bgp 199.172.0.0
BGP routing table entry for 199.172.0.0/20, version 125
Paths: (2 available, best #1, table Default-IP-Routing-Table)
Advertised to non peer-group peers:
148.9.45.4
26 39 11, (aggregated by 11 199.172.10.1), (received & used)
148.9.25.2 from 148.9.25.2 (206.186.7.66)
Origin IGP, localpref 100, valid, external, atomic-aggregate, best
26 39 11, (aggregated by 11 199.172.10.1), (received & used)
148.9.45.4 from 148.9.45.4 (148.9.43.1)
Origin IGP, localpref 100, valid, internal, atomic-aggregate
r5-ccie#
Now I block the advertisements of 199.172.0.0/20 from internet to R5.
r5 iniates the call ( based on the watch-list 1) and builds bgp nei. with r3.
r5#sh isdn ac
--------------------------------------------------------------------------------
ISDN ACTIVE CALLS
--------------------------------------------------------------------------------
Call Calling Called Remote Seconds Seconds Seconds Charges
Type Number Number Name Used Left Idle Units/Currency
--------------------------------------------------------------------------------
Out 3331234 r3 143 - - 0
--------------------------------------------------------------------------------
r5#sh ip route 199.172.0.0
Routing entry for 199.172.0.0/20, supernet
Known via "bgp 54", distance 20, metric 0
Tag 39, type external
Last update from 148.9.35.1 00:14:28 ago
Routing Descriptor Blocks:
* 148.9.35.1, from 148.9.35.1, 00:14:28 ago
Route metric is 0, traffic share count is 1
AS Hops 2
r5#
r5#sh debug
Diall on demand events debugging is on
Backup:
Backup events debugging is on
ISDN:
ISDN events debugging is on
ISDN events debug DSLs. (On/Off/No DSL:1/0/-)
DSL 0 --> 31
1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*Mar 2 21:53:28.584: BR0/0 DDR: Already 1 call(s) in progress on BR0/0, dialing
not allowed
*Mar 2 21:53:28.628: ISDN BR0/0: Event: incoming ces value = 2
*Mar 2 21:53:28.628: ISDN BR0/0: received HOST_DISCONNECT_ACK call_id 0x82F2
*Mar 2 21:53:28.628: ISDN BR0/0: HOST_DISCONNECT_ACK: call type is DATA
*Mar 2 21:53:58.496: BR0/0 DDR: Attempting to dial 3331234
*Mar 2 21:53:58.496: ISDN BR0/0: Outgoing call id = 0x82F3, dsl 0
*Mar 2 21:53:58.496: ISDN BR0/0: Event: Call to 3331234 at 64 Kb/s
*Mar 2 21:53:58.496: ISDN BR0/0: process_bri_call(): call id 0x82F3, called_num
ber 3331234, speed 64, call type DATA
*Mar 2 21:53:58.496: CC_CHAN_GetIdleChanbri: dsl 0
*Mar 2 21:53:58.496: Found idle channel B2
*Mar 2 21:53:58.556: ISDN BR0/0: Event: incoming ces value = 2
*Mar 2 21:53:58.556: ISDN BR0/0: received HOST_PROCEEDING call_id 0x82F3
*Mar 2 21:53:58.588: ISDN BR0/0: Event: incoming ces value = 2
*Mar 2 21:53:58.588: ISDN BR0/0: received HOST_DISCONNECT call_id 0x82F3
*Mar 2 21:53:58.588: ISDN BR0/0: Event: Call to 3331234 was hung up.
*Mar 2 21:53:58.588: ISDN BR0/0: process_disc_ack(): call id 0x82F3, ces 2, cal
l type DATA
*Mar 2 21:53:58.588: BRI0/0: wait for isdn carrier timeout, call id=0x82F3
*Mar 2 21:53:58.592: ISDN BRI0/0: isdn_is_bchannel_available: No Free B-channels
It says there is idle b channel but then it complains about no free channel ?
Any idea ?
Kafkaf
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This archive was generated by hypermail 2.1.4 : Fri Jan 17 2003 - 17:21:53 GMT-3