From: slo (nebulite@gmail.com)
Date: Thu Mar 12 2009 - 12:02:37 ARST
TO: ALL
Today, I have test case to test ipv6 MBGP capabilities negotiation.
Test case is :
[Spirent STC]----eBGP----[Cisco ASR 1006]-----iBGP------[Cisco 7206]
I capture BGP open message between STC and ASR, ASR and 7206
I can setting disable Route Refresh on STC's port setting,
Following is STC open message:
+-----------------------------------------------------------------------+
Border Gateway Protocol
OPEN Message
Marker: 16 bytes
Length: 37 bytes
Type: OPEN Message (1)
Version: 4
My AS: 100
Hold time: 90
BGP identifier: 10.81.24.37
Optional parameters length: 8 bytes
Optional parameters
Capabilities Advertisement (8 bytes)
Parameter type: Capabilities (2)
Parameter length: 6 bytes
Multiprotocol extensions capability (6 bytes)
Capability code: Multiprotocol extensions capability (1)
Capability length: 4 bytes
Capability value
Address family identifier: IPv6 (2)
Reserved: 1 byte
Subsequent address family identifier: Unicast (1)
+-----------------------------------------------------------------------+
Following is ASR 1006 BGP Open Message:
Border Gateway Protocol
OPEN Message
Marker: 16 bytes
Length: 50 bytes
Type: OPEN Message (1)
Version: 4
My AS: 37901
Hold time: 180
BGP identifier: 10.81.2.1
Optional parameters length: 21 bytes
Optional parameters
Capabilities Advertisement (8 bytes)
Parameter type: Capabilities (2)
Parameter length: 6 bytes
Multiprotocol extensions capability (6 bytes)
Capability code: Multiprotocol extensions capability (1)
Capability length: 4 bytes
Capability value
Address family identifier: IPv6 (2)
Reserved: 1 byte
Subsequent address family identifier: Unicast (1)
Capabilities Advertisement (4 bytes)
Parameter type: Capabilities (2)
Parameter length: 2 bytes
Route refresh capability (2 bytes)
Capability code: Route refresh capability (128)
Capability length: 0 bytes
Capabilities Advertisement (4 bytes)
Parameter type: Capabilities (2)
Parameter length: 2 bytes
Route refresh capability (2 bytes)
Capability code: Route refresh capability (2)
Capability length: 0 bytes
Capabilities Advertisement (5 bytes)
Parameter type: Capabilities (2)
Parameter length: 3 bytes
Unknown capability (3 byte)
Capability code: Unknown capability (131)
Capability code: Private use (131)
Capability length: 1 byte
Capability value: Unknown
+-----------------------------------------------------------------------+
I can setting Address family ipv6 unicast or Address family ipv6 multicast
To control Address family identifier: IPv6 (2) & Subsequent address family identifier: Unicast (1)
And my question is :
How to disable/enable any MBGP capabilities on Cisco IOS ?
Slo
---------------------
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This archive was generated by hypermail 2.1.4 : Mon Apr 06 2009 - 06:44:04 ART