BGP LAB DAY 4

 

 R1#sh ip bgp summary
BGP router identifier 10.1.4.1, local AS number 100
BGP table version is 41, main routing table version 41
20 network entries using 2880 bytes of memory
28 path entries using 2240 bytes of memory
6/5 BGP path/bestpath attribute entries using 816 bytes of memory
4 BGP AS-PATH entries using 96 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP using 6032 total bytes of memory
BGP activity 28/8 prefixes, 44/16 paths, scan interval 60 secs

Neighbor        V           AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
2.2.2.2         4          200      21      20       41    0    0 00:09:18       16
13.1.1.3        4          300     121     126       41    0    0 01:46:18        8
R1#
R1#
R1#sh ip int brief
Interface              IP-Address      OK? Method Status                Protocol
FastEthernet0/0        unassigned      YES NVRAM  administratively down down
FastEthernet1/0        unassigned      YES NVRAM  administratively down down
Ethernet2/0            12.1.1.1        YES NVRAM  up                    up
Ethernet2/1            13.1.1.1        YES NVRAM  up                    up
Ethernet2/2            21.1.1.1        YES NVRAM  up                    up
Ethernet2/3            unassigned      YES NVRAM  administratively down down
Loopback0              1.1.1.1         YES NVRAM  up                    up
Loopback1              10.1.1.1        YES NVRAM  up                    up
Loopback2              10.1.2.1        YES NVRAM  up                    up
Loopback3              10.1.3.1        YES NVRAM  up                    up
Loopback4              10.1.4.1        YES NVRAM  up                    up

!! Changing Router id to 1.1.1.1

R1#config
Configuring from terminal, memory, or network [terminal]?
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#
R1(config)#
R1(config)#router bgp 100
R1(config-router)#bgp router-id ?
  A.B.C.D  Manually configured router identifier
  vrf      vrf-specific router id configuration

R1(config-router)#bgp router-id 1.1.1.1
R1(config-router)#
*Nov 30 09:46:58.451: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Down Router ID changed
*Nov 30 09:46:58.451: %BGP_SESSION-5-ADJCHANGE: neighbor 2.2.2.2 IPv4 Unicast topology base removed from session  Router ID changed
*Nov 30 09:46:58.459: %BGP-5-ADJCHANGE: neighbor 13.1.1.3 Down Router ID changed
*Nov 30 09:46:58.459: %BGP_SESSION-5-ADJCHANGE: neighbor 13.1.1.3 IPv4 Unicast topology base removed from session  Router ID changed
*Nov 30 09:46:59.335: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up
*Nov 30 09:46:59.523: %BGP-5-ADJCHANGE: neighbor 13.1.1.3 Up
R1(config-router)#^Z
R1#
R1#
R1#
R1#wr
*Nov 30 09:47:29.295: %SYS-5-CONFIG_I: Configured from console by console
Building configuration...
[OK]
R1#sh ip bgp sum
R1#sh ip bgp summary
BGP router identifier 1.1.1.1, local AS number 100
BGP table version is 21, main routing table version 21
20 network entries using 2880 bytes of memory
28 path entries using 2240 bytes of memory
6/5 BGP path/bestpath attribute entries using 816 bytes of memory
4 BGP AS-PATH entries using 96 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP using 6032 total bytes of memory
BGP activity 48/28 prefixes, 72/44 paths, scan interval 60 secs

Neighbor        V           AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
2.2.2.2         4          200      11       9       21    0    0 00:00:40       16
13.1.1.3        4          300       6       9       21    0    0 00:00:40        8